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Komatsu D61EX-23, D61PX-23 Crawler Bulldozer Shop Manual 30001 and up – PDF DOWNLOAD
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Komatsu D61EX-23, D61PX-23 Crawler Bulldozer Shop Manual
SERIAL NUMBERS:
D61EX-30001 and up
D61PX-30001 and up
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Description
Komatsu D61EX-23, D61PX-23 Crawler Bulldozer Shop Manual
FILE DETAILS:
Komatsu D61EX-23, D61PX-23 Crawler Bulldozer Shop Manual
Brands: Komatsu
Equipment Type: Crawler Bulldozer
Manuals Type: Shop Manual
Machine Model: D61EX-23, D61PX-23
Serial Number: 30001 and up
Book Code: SEN06010-01
Language: English
Pages: 1706
File Format: Portable Document Format (PDF)
DESCRIPTION:
Komatsu D61EX-23, D61PX-23 Crawler Bulldozer Shop Manual
How to read the shop manual:
Composition of shop manual:
• This shop manual describes the technical information required for the services performed in a workshop. The shop manual is divided into the following chapters for the convenience of use.
00. Index and foreword:
• This section includes the index, foreword, safety and basic information.
01. Specification:
• This section explains the specifications of the machine.
10. Structure and function:
• This section explains the structure and function of the machine. The section of “Structure and function” serves not only to give an understanding for the structure of each component, but also serves as reference material for troubleshooting.
20. Standard value table:
• The standard values for a new machine and trouble shooting are described. This standard value table is used for testing and adjusting, and determining a failure at troubleshooting.
30. Testing and adjusting:
• This section describes the measuring tools and how to measure, and how to adjust various parts. As for the standard value and failure criterion, see the standard value table.
40. Troubleshooting:
• This section describes the troubleshooting in a suspected area when a failure occurs and the remedy for
the failure. Troubleshooting is described by each failure mode.
50. Disassembly and assembly:
• This section explains the procedures for removing, installing, disassembling, and assembling each part or component and the special tools for the works as well as precautions for doing them safely. In addition, tightening torque, and quantity and weight of coating material, oil, grease, and coolant required for the works are also explained.
60. Maintenance standard:
• This section describes the maintenance standard values for each component. This section gives the criterion values for each component and required remedy at disassembly or maintenance.
80. Appendix:
• The structure and function, testing and adjusting, and troubleshooting for all of the other components or equipment which can not be separately classified are explained together in the appendix.
90. Diagrams and drawings:
• This section gives hydraulic circuit diagrams and electrical circuit diagrams.
TABLE OF CONTENTS:
Komatsu D61EX-23, D61PX-23 Crawler Bulldozer Shop Manual
SEN06010-01 .................................................................................................................................... 1 00 Index and foreword .......................................................................................................................... 3 Index ...................................................................................................................................... 4 Foreword, safety and general information ................................................................................................... 17 Important safety notice ................................................................................................................ 17 How to read the shop manual ............................................................................................................ 24 Explanation of terms for maintenance standard .......................................................................................... 26 Handling equipment of fuel system devices .............................................................................................. 28 Handling of intake system parts ........................................................................................................ 29 Handling of hydraulic equipment ........................................................................................................ 30 Method of disconnecting and connecting of push-pull type coupler ....................................................................... 32 Handling of electrical equipment ....................................................................................................... 35 How to read electric wire code ......................................................................................................... 43 Precautions when performing operation .................................................................................................. 46 Practical use of KOMTRAX ............................................................................................................... 50 Standard tightening torque table ....................................................................................................... 51 List of abbreviation ................................................................................................................... 55 Conversion table ....................................................................................................................... 60 01 Specification ............................................................................................................................... 65 Table of contents .......................................................................................................................... 66 Specifications ............................................................................................................................. 67 Specification drawing .................................................................................................................. 67 Specifications ......................................................................................................................... 69 Weight table ........................................................................................................................... 82 Table of fuel, coolant, and lubricants ................................................................................................. 86 10 Structure and function ...................................................................................................................... 87 Table of contents .......................................................................................................................... 88 Engine and cooling system .................................................................................................................. 89 Engine related parts ................................................................................................................... 89 KVGT ................................................................................................................................... 91 EGR system piping drawing .............................................................................................................. 98 EGR system circuit diagram ............................................................................................................. 100 EGR valve .............................................................................................................................. 102 EGR cooler ............................................................................................................................. 104 KCCV layout drawing .................................................................................................................... 105 KCCV ventilator ........................................................................................................................ 107 KDPF ................................................................................................................................... 109 Cooling system ......................................................................................................................... 113 Cooling fan motor ...................................................................................................................... 115 Oil cooler bypass and HST charge safety valve .......................................................................................... 120 Power train ................................................................................................................................ 126 Power train system ..................................................................................................................... 126 Damper ................................................................................................................................. 129 Hydraulic component layout of HST ...................................................................................................... 130 Steering and brake control ............................................................................................................. 131 HST pump ............................................................................................................................... 133 HST motor .............................................................................................................................. 147 Charge pump ............................................................................................................................ 162 Solenoid valve ......................................................................................................................... 163 Final drive ............................................................................................................................ 171 Undercarriage and frame .................................................................................................................... 175 Main frame ............................................................................................................................. 175 Suspension ............................................................................................................................. 176 Track frame and idler cushion .......................................................................................................... 178 Hydraulic system ........................................................................................................................... 180 Hydraulic component layout of work equipment ........................................................................................... 180 Work equipment control system .......................................................................................................... 182 Hydraulic tank ......................................................................................................................... 184 CLSS ................................................................................................................................... 186 Work equipment and cooling fan pump .................................................................................................... 189 Control valve .......................................................................................................................... 200 Ripper PPC valve ....................................................................................................................... 220 Quick drop valve ....................................................................................................................... 224 Angle control EPC valve ................................................................................................................ 227 Accumulator ............................................................................................................................ 232 Work equipment ............................................................................................................................. 234 Blade .................................................................................................................................. 234 Ripper ................................................................................................................................. 235 Piston valve ........................................................................................................................... 236 Cab and its attachments .................................................................................................................... 237 ROPS cab ............................................................................................................................... 237 Cab mount .............................................................................................................................. 239 Electrical system .......................................................................................................................... 240 Engine control system .................................................................................................................. 240 Cooling system control system .......................................................................................................... 243 HST control system ..................................................................................................................... 245 Parking brake control system ........................................................................................................... 257 System operating lamp function ......................................................................................................... 259 Battery disconnect switch function ..................................................................................................... 260 Machine monitor system ................................................................................................................. 262 KOMTRAX system ......................................................................................................................... 285 System component parts ................................................................................................................. 288 Sensor ................................................................................................................................. 305 20 Standard value tables ....................................................................................................................... 323 Table of contents .......................................................................................................................... 324 Standard service value table ............................................................................................................... 325 Standard value table for engine ........................................................................................................ 325 Standard value table for machine ....................................................................................................... 326 Standard value table for electrical system ............................................................................................. 333 30 Testing and adjusting ....................................................................................................................... 343 Table of contents .......................................................................................................................... 344 General information on testing and adjusting ............................................................................................... 346 Tools for testing and adjusting ........................................................................................................ 346 Sketch of tools for testing and adjusting .............................................................................................. 349 Engine and cooling system .................................................................................................................. 351 Testing engine speed ................................................................................................................... 351 Testing boost pressure ................................................................................................................. 353 Testing exhaust gas color .............................................................................................................. 355 Testing and adjusting valve clearance .................................................................................................. 357 Testing compression pressure ........................................................................................................... 360 Testing blowby pressure ................................................................................................................ 364 Testing engine oil pressure ............................................................................................................ 366 Testing EGR valve and KVGT oil pressures ............................................................................................... 367 Testing fuel pressure .................................................................................................................. 368 Testing fuel discharge, return and leakage ............................................................................................. 373 Bleeding air from fuel system .......................................................................................................... 379 Checking fuel circuit for leakage ...................................................................................................... 381 Handling cylinder cutout mode operation ................................................................................................ 382 Handling no injection cranking operation ............................................................................................... 383 Testing of KDPF and muffler stack for looseness and damage ............................................................................. 384 Testing of installed condition of cylinder head and manifolds .......................................................................... 385 Testing engine piping for damage and looseness ......................................................................................... 386 Replacing alternator belt .............................................................................................................. 387 Power train ................................................................................................................................ 388 Testing and adjusting HST oil pressure ................................................................................................. 388 Testing output pressure of solenoid valve .............................................................................................. 393 Testing if machine travels straight .................................................................................................... 397 Simple test procedure for brake performance ............................................................................................ 398 Adjusting deceleration/brake pedal ..................................................................................................... 399 Adjusting parking brake lever .......................................................................................................... 402 Move disabled machine urgently ......................................................................................................... 404 Undercarriage and frame .................................................................................................................... 407 Adjusting idler clearance .............................................................................................................. 407 Checking sprocket wear ................................................................................................................. 408 Checking and adjusting track shoe tension .............................................................................................. 409 Hydraulic system ........................................................................................................................... 410 Releasing remaining pressure in work equipment cylinder ................................................................................ 410 Testing and adjusting work equipment oil pressure ...................................................................................... 411 Testing source pressure of control circuit ............................................................................................. 413 Testing work equipment EPC valve and fan EPC valve ..................................................................................... 414 Isolating the parts causing hydraulic drift in blade and ripper ........................................................................ 416 Testing internal oil leakage of work equipment cylinder ................................................................................ 417 Testing fan speed ...................................................................................................................... 419 Testing fan circuit oil pressure ....................................................................................................... 420 Bleeding air from hydraulic circuit .................................................................................................... 421 Work equipment ............................................................................................................................. 422 Adjusting work equipment lock lever .................................................................................................... 422 Adjusting play of blade center ball .................................................................................................... 424 Electrical system .......................................................................................................................... 425 Special functions of machine monitor ................................................................................................... 425 Adjustment method when HST controller has been replaced ................................................................................ 506 Adjustment method when electric or hydraulic device has been adjusted or replaced ...................................................... 509 Adjusting rearview camera angle ........................................................................................................ 510 Handling voltage circuit of engine controller .......................................................................................... 511 Handling battery disconnect switch ..................................................................................................... 512 Testing diodes ......................................................................................................................... 513 Pm clinic .................................................................................................................................. 514 Pm Clinic service ...................................................................................................................... 514 Pm Clinic check sheet .................................................................................................................. 516 40 Troubleshooting ............................................................................................................................. 523 Table of contents .......................................................................................................................... 524 General information on troubleshooting ..................................................................................................... 531 Troubleshooting points ................................................................................................................. 531 Sequence of events in troubleshooting .................................................................................................. 533 Checks before troubleshooting .......................................................................................................... 535 Inspection procedure before troubleshooting ............................................................................................ 537 Preparation for troubleshooting of electrical system ................................................................................... 554 Classification and procedures for troubleshooting ...................................................................................... 558 Symptom and troubleshooting numbers .................................................................................................... 560 Information in troubleshooting table ................................................................................................... 563 Procedure for troubleshooting wiring harness of pressure sensor system for open circuit ................................................ 565 Connector list and layout .............................................................................................................. 568 Connector contact identification ....................................................................................................... 580 T-branch box and T-branch adapter table ................................................................................................ 616 Fuse location table .................................................................................................................... 622 Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement .......................................................................... 627 Fabrication of dummy temperature sensor (for KDOC and KDPF temperature sensors) ........................................................ 630 Fabrication of short-circuit connector (for CA1883 and CA3135) ......................................................................... 631 Failure codes table .................................................................................................................... 632 Troubleshooting by failure code (Display of code) .......................................................................................... 643 Failure code [6091NX] HST Oil Filter Clogging .......................................................................................... 643 Failure code [989L00] Engine Controller Lock Caution 1 ................................................................................. 645 Failure code [989M00] Engine Controller Lock Caution 2 ................................................................................. 646 Failure code [989N00] Engine Controller Lock Caution 3 ................................................................................. 647 Failure code [A1U0N3] HC Desorb Request 1 .............................................................................................. 648 Failure code [A1U0N4] HC Desorb Request 2 .............................................................................................. 650 Failure code [AA10NX] Air Cleaner Clogging ............................................................................................. 652 Failure code [AB00KE] Charge Voltage Low ............................................................................................... 654 Failure code [B@BAZG] Eng Oil Press Low ................................................................................................ 656 Failure code [B@BCNS] Eng Water Overheat ............................................................................................... 657 Failure code [B@CRNS] HST Oil Overheat ................................................................................................. 658 Failure code [B@CRZG] HST Charge Press Low ............................................................................................. 659 Failure code [CA115] Eng Ne and Bkup Speed Sens Error .................................................................................. 660 Failure code [CA122] Chg Air Press Sensor High Error ................................................................................... 661 Failure code [CA123] Chg Air Press Sensor Low Error .................................................................................... 663 Failure code [CA131] Throttle Sensor High Error ........................................................................................ 665 Failure code [CA132] Throttle Sensor Low Error ......................................................................................... 667 Failure code [CA144] Coolant Temp Sens High Error ...................................................................................... 669 Failure code [CA145] Coolant Temp Sens Low Error ....................................................................................... 671 Failure code [CA153] Chg Air Temp Sensor High Error .................................................................................... 673 Failure code [CA154] Chg Air Temp Sensor Low Error ..................................................................................... 675 Failure code [CA187] Sensor 2 Supply Volt Low Error .................................................................................... 677 Failure code [CA234] Eng Overspeed ..................................................................................................... 679 Failure code [CA221] Ambient Press Sensor High Error ................................................................................... 680 Failure code [CA222] Ambient Press Sensor Low Error .................................................................................... 682 Failure code [CA227] Sensor 2 Supply Volt High Error ................................................................................... 684 Failure code [CA238] Ne Speed Sensor Supply Volt Error ................................................................................. 685 Failure code [CA239] Ne Speed Sens Supply Volt High Error .............................................................................. 686 Failure code [CA271] IMV/PCV1 Short Error .............................................................................................. 687 Failure code [CA272] IMV/PCV1 Open Error ............................................................................................... 689 Failure code [CA295] Ambient Pressure Sensor In Range Error ............................................................................ 691 Failure code [CA322] Inj #1(L#1) Open/Short Error ...................................................................................... 692 Failure code [CA323] Inj #5(L#5) Open/Short Error ...................................................................................... 694 Failure code [CA324] Inj #3(L#3) Open/Short Error ...................................................................................... 696 Failure code [CA325] Inj #6(L#6) Open/Short Error ...................................................................................... 698 Failure code [CA331] Inj #2(L#2) Open/Short Error ...................................................................................... 700 Failure code [CA332] Inj #4(L#4) Open/Short Error ...................................................................................... 702 Failure code [CA343] ECM Critical Internal Failure ..................................................................................... 704 Failure code [CA351] Injectors Drive Circuit Error ..................................................................................... 705 Failure code [CA352] Sensor 1 Supply Volt Low Error .................................................................................... 706 Failure code [CA356] Mass Air Flow Sensor High Error ................................................................................... 708 Failure code [CA357] Mass Air Flow Sensor Low Error .................................................................................... 710 Failure code [CA386] Sensor 1 Supply Volt High Error ................................................................................... 712 Failure code [CA428] Water in Fuel Sensor High Error ................................................................................... 713 Failure code [CA429] Water in Fuel Sensor Low Error .................................................................................... 715 Failure code [CA435] Eng Oil Press Sw Error ............................................................................................ 717 Failure code [CA441] Battery Voltage Low Error ......................................................................................... 718 Failure code [CA442] Battery Voltage High Error ........................................................................................ 720 Failure code [CA449] Rail Press Very High Error ........................................................................................ 721 Failure code [CA451] Rail Press Sensor High Error ...................................................................................... 722 Failure code [CA452] Rail Press Sensor Low Error ....................................................................................... 724 Failure code [CA488] Chg Air Temp High Torque Derate ................................................................................... 726 Failure code [CA515] Rail Press Sens Sup Volt High Error ............................................................................... 727 Failure code [CA516] Rail Press Sens Sup Volt Low Error ................................................................................ 729 Failure code [CA553] Rail Press High Error ............................................................................................. 731 Failure code [CA555] Crankcase Press High Error 2 ...................................................................................... 732 Failure code [CA556] Crankcase Press High Error 2 ...................................................................................... 733 Failure code [CA559] Rail Press Low Error .............................................................................................. 734 Failure code [CA595] Turbo Speed High Error 2 .......................................................................................... 736 Failure code [CA687] Turbo Speed Low Error ............................................................................................. 737 Failure code [CA689] Eng Ne Speed Sensor Error ......................................................................................... 739 Failure code [CA691] Intake Air Temp Sens High Error ................................................................................... 741 Failure code [CA692] Intake Air Temp Sens Low Error .................................................................................... 743 Failure code [CA697] ECM Internal Temp Sensor High Error ............................................................................... 745 Failure code [CA698] ECM Int Temp Sensor Low Error ..................................................................................... 746 Failure code [CA731] Eng Bkup Speed Sens Phase Error ................................................................................... 747 Failure code [CA778] Eng Bkup Speed Sensor Error ....................................................................................... 749 Failure code [CA1117] Persistent Data Lost Error ....................................................................................... 754 Failure code [CA1664] KDOC Malfunction ................................................................................................. 755 Failure code [CA1691] Regeneration Ineffective ......................................................................................... 758 Failure code [CA1695] Sens 5 Supply Volt High Error .................................................................................... 761 Failure code [CA1696] Sens 5 Supply Volt Low Error ..................................................................................... 762 Failure code [CA1843] Crankcase Press Sens High Error .................................................................................. 764 Failure code [CA1844] Crankcase Press Sens Low Error ................................................................................... 766 Failure code [CA1879] KDPF Delta P Sensor High Error ................................................................................... 768 Failure code [CA1881] KDPF Delta P Sensor Low Error .................................................................................... 770 Failure code [CA1883] KDPF Delta P Sens In Range Error ................................................................................. 772 Failure code [CA1921] KDPF Soot Load High Error 1 ...................................................................................... 776 Failure code [CA1922] KDPF Soot Load High Error 2 ...................................................................................... 779 Failure code [CA1942] Crankcase Press Sens In Range Error .............................................................................. 784 Failure code [CA1993] KDPF Delta Pressure Low Error .................................................................................... 785 Failure code [CA2185] Throt Sensor Sup Volt High Error ................................................................................. 788 Failure code [CA2186] Throt Sensor Sup Volt Low Error .................................................................................. 789 Failure code [CA2249] Rail Press Very Low Error ........................................................................................ 790 Failure code [CA2271] EGR Valve Pos Sens High Error .................................................................................... 791 Failure code [CA2272] EGR Valve Pos Sens Low Error ..................................................................................... 793 Failure code [CA2288] Turbo Speed High Error 1 ......................................................................................... 796 Failure code [CA2311] IMV Solenoid Error ............................................................................................... 797 Failure code [CA2349] EGR Valve Solenoid Open Error .................................................................................... 798 Failure code [CA2353] EGR Valve Solenoid Short Error ................................................................................... 800 Failure code [CA2357] EGR Valve Servo Error ............................................................................................ 802 Failure code [CA2373] Exhaust Manifold Press Sens High error ........................................................................... 803 Failure code [CA2374] Exhaust Manifold Press Sens Low error ............................................................................ 805 Failure code [CA2375] EGR Orifice Temp Sens High Error ................................................................................. 807 Failure code [CA2376] EGR Orifice Temp Sens Low Error .................................................................................. 809 Failure code [CA2381] KVGT Pos Sens High Error ......................................................................................... 811 Failure code [CA2382] KVGT Pos Sens Low Error .......................................................................................... 813 Failure code [CA2383] KVGT Solenoid Open Error ......................................................................................... 816 Failure code [CA2386] KVGT Solenoid Short Error ........................................................................................ 818 Failure code [CA2387] KVGT Servo Error ................................................................................................. 820 Failure code [CA2554] Exh Manifold Press Sens In Range Error ........................................................................... 821 Failure code [CA2555] Grid Htr Relay Volt Low Error .................................................................................... 822 Failure code [CA2556] Grid Htr Relay Volt High Error ................................................................................... 824 Failure code [CA2637] KDOC Face Plugging ............................................................................................... 826 Failure code [CA2639] Manual Stationary Regeneration Request ........................................................................... 828 Failure code [CA2961] EGR Orifice Temp High Error 1 .................................................................................... 831 Failure code [CA2973] Chg Air Press Sensor In Range Error .............................................................................. 832 Failure code [CA3133] KDPF Outlet Press Sens High Error ................................................................................ 833 Failure code [CA3134] KDPF Outlet Press Sens Low Error ................................................................................. 835 Failure code [CA3135] KDPF Outlet Press Sens In Range Error ............................................................................ 837 Failure code [CA3251] KDOC Inlet Temp High Error ....................................................................................... 841 Failure code [CA3253] KDOC Temp Error - Non Regeneration ............................................................................... 844 Failure code [CA3254] KDOC Outlet Temp High Error 1 .................................................................................... 847 Failure code [CA3255] KDPF Temp Error - Non Regeneration ............................................................................... 850 Failure code [CA3256] KDPF Outlet Temp High Error 1 .................................................................................... 854 Failure code [CA3311] KDOC Outlet Temp High Error 2 .................................................................................... 857 Failure code [CA3312] KDPF Outlet Temp High Error 2 .................................................................................... 860 Failure code [CA3313] KDOC Inlet Temp Sensor Low Error ................................................................................. 863 Failure code [CA3314] KDOC Inlet Temp Sens High Error .................................................................................. 866 Failure code [CA3315] KDOC Inlet Temp Sens In Range Error .............................................................................. 870 Failure code [CA3316] KDOC Outlet Temp Sens Low Error .................................................................................. 874 Failure code [CA3317] KDOC Outlet Temp Sens High Error ................................................................................. 877 Failure code [CA3318] KDOC Outlet Temp Sens In Range Error ............................................................................. 881 Failure code [CA3319] KDPF Outlet Temp Sens High Error ................................................................................. 885 Failure code [CA3321] KDPF Outlet Temp Sens Low Error .................................................................................. 889 Failure code [CA3322] KDPF Outlet Temp Sens In Range Error ............................................................................. 892 Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error ......................................................................... 896 Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error .......................................................................... 898 Failure code [CA3741] Rail Press Valve Trip Error ...................................................................................... 900 Failure code [D130KA] Neutral relay Open ............................................................................................... 901 Failure code [D130KB] Neutral relay Short circuit ...................................................................................... 903 Failure code [D130KY] Neutral relay: Hot Short ......................................................................................... 905 Failure code [D19JKZ] Personal Code Relay Abnormality .................................................................................. 907 Failure code [D811MC] KOMTRAX Error .................................................................................................... 910 Failure code [D862KA] GPS Antenna Open Circuit ......................................................................................... 911 Failure code [D8ALKA] Operating Lamp Open Circuit (KOMTRAX) ............................................................................ 912 Failure code [D8ALKB] Operating Lamp Short Circuit (KOMTRAX) ........................................................................... 913 Failure code [D8AQKR] CAN2 Discon (KOMTRAX) ............................................................................................ 914 Failure code [DAF0MB] Monitor ROM Abnormality .......................................................................................... 915 Failure code [DAF0MC] Monitor Error .................................................................................................... 916 Failure code [DAF8KB] Camera Power Supply Short Circuit ................................................................................ 917 Failure code [DAF9KQ] Model Selection Abnormality ...................................................................................... 918 Failure code [DAFGMC] GPS Module Error ................................................................................................. 919 Failure code [DAFLKA] Operating Lamp Open Circuit (Monitor) ............................................................................ 920 Failure code [DAFLKB] Operating Lamp Short Circuit (Monitor) ........................................................................... 921 Failure code [DAFQKR] CAN2 Discon (Monitor) ............................................................................................ 922 Failure code [DAJ000] HST controller: Abnormality in controller ........................................................................ 923 Failure code [DAJ0KQ] HST controller: Type select signal ............................................................................... 924 Failure code [DAJ0KT] HST controller: Abnormality in controller ........................................................................ 925 Failure code [DAJ0MC] HST Con Error .................................................................................................... 926 Failure code [DAJ1KK] HST controller: Source voltage low ............................................................................... 927 Failure code [DAJ2KK] HST controller: Output voltage low ............................................................................... 929 Failure code [DAJ5KK] HST: Sensor volt 5V (0) Out of normal range ...................................................................... 931 Failure code [DAJ6KK] HST: Sensor volt 5V (1) Out of normal range ...................................................................... 933 Failure code [DAJLKA] Operating Lamp Open Circuit (HST Con) ............................................................................ 935 Failure code [DAJLKB] Operating Lamp Short Circuit (HST Con) ........................................................................... 937 Failure code [DAJPMA] Inconsistency of Option Selection (HST) .......................................................................... 938 Failure code [DAJQKR] CAN2 Discon (HST Con) ............................................................................................ 939 Failure code [DAJRKR] CAN1 Discon (HST Con) ............................................................................................ 940 Failure code [DB2QKR] CAN2 Discon (Engine Con) ......................................................................................... 941 Failure code [DB2RKR] CAN1 Discon (Engine Con) ......................................................................................... 945 Failure code [DD12KA] Shift up SW: Open ................................................................................................ 949 Failure code [DD12KB] Shift up SW: Short Circuit ....................................................................................... 951 Failure code [DD13KA] Shift down SW: Open .............................................................................................. 953 Failure code [DD13KB] Shift down SW: Short Circuit ..................................................................................... 955 Failure code [DD14KA] Parking lever SW: Open ........................................................................................... 957 Failure code [DD14KB] Parking lever SW: Short circuit .................................................................................. 959 Failure code [DDKAKA] Blade float Sw: Open ............................................................................................. 961 Failure code [DDKAKB] Blade float Sw: Short circuit .................................................................................... 963 Failure code [DDKFL4] Left Angle Sw: Signal mismatch ................................................................................... 965 Failure code [DDKGL4] Right Angle Sw: Signal mismatch .................................................................................. 967 Failure code [DDKHKA] iB Sw: Open ...................................................................................................... 969 Failure code [DDKHKB] iB Sw: Short circuit ............................................................................................. 971 Failure code [DDNLKA] Weq lock Sw: Open ................................................................................................ 973 Failure code [DDNLKB] Weq lock Sw: Short circuit ....................................................................................... 975 Failure code [DDP6KA] Brake Pressure Sensor: Open ...................................................................................... 977 Failure code [DDP6KB] Brake Pressure Sensor: Hot Short ................................................................................. 979 Failure code [DDP6MA] Brake pressure sensor: Malfunction ............................................................................... 981 Failure code [DDU1FS] Parking lever Switch 2: Signal mismatch .......................................................................... 983 Failure code [DDU1KA] Parking lever Sw2: Open .......................................................................................... 985 Failure code [DDU1KY] Parking lever Sw2: Hot Short ..................................................................................... 987 Failure code [DFA4KX] Blade lift lever: Main and Sub Error ............................................................................. 989 Failure code [DFA4KZ] Blade lift lever: Main and Sub Error ............................................................................. 990 Failure code [DFA4L8] Blade lift lever: Signal mismatch ................................................................................ 991 Failure code [DFA5KA] Blade lift lever1: Open .......................................................................................... 992 Failure code [DFA5KB] Blade lift lever1: Hot Short ..................................................................................... 995 Failure code [DFA6KA] Blade lift lever2: Open .......................................................................................... 997 Failure code [DFA6KB] Blade lift lever2: Hot Short ..................................................................................... 999 Failure code [DFA7KX] Blade tilt lever: Main and Sub Error .............................................................................1001 Failure code [DFA7KZ] Blade tilt lever: Main and Sub Error .............................................................................1002 Failure code [DFA7L8] Blade tilt lever: Signal mismatch ................................................................................1003 Failure code [DFA8KA] Blade tilt lever1: Open ..........................................................................................1004 Failure code [DFA8KB] Blade tilt lever1: Hot Short .....................................................................................1007 Failure code [DFA9KA] Blade tilt lever2: Open ..........................................................................................1009 Failure code [DFA9KB] Blade tilt lever2: Hot Short .....................................................................................1012 Failure code [DGS1KA] HST oil temp sensor: Open ........................................................................................1014 Failure code [DGS1KX] HST oil temp sensor: Out of normal range .........................................................................1016 Failure code [DH21KA] Weq pressure sensor: Open ........................................................................................1017 Failure code [DH21KB] Weq pressure sensor: Hot Short ...................................................................................1019 Failure code [DHA4KA] Air Cleaner Clog Sensor Open Circuit .............................................................................1021 Failure code [DHH7KA] LF HST Pressure Sensor: Open .....................................................................................1023 Failure code [DHH7KB] LF HST Pressure Sensor: Hot Short ................................................................................1025 Failure code [DHH8KA] RF HST Pressure Sensor: Open .....................................................................................1027 Failure code [DHH8KB] RF HST Pressure Sensor: Hot Short ................................................................................1029 Failure code [DHH9KA] LR HST Pressure Sensor: Open .....................................................................................1031 Failure code [DHH9KB] LR HST Pressure Sensor: Hot Short ................................................................................1033 Failure code [DHHAKA] RR HST Pressure Sensor: Open .....................................................................................1035 Failure code [DHHAKB] RR HST Pressure Sensor: Hot Short ................................................................................1037 Failure code [DK30KA] ST lever1: Open ..................................................................................................1039 Failure code [DK30KB] ST lever1: Hot Short .............................................................................................1041 Failure code [DK30KX] ST lever: Main and Sub Error .....................................................................................1043 Failure code [DK30KZ] ST lever: Main and Sub Error .....................................................................................1044 Failure code [DK30L8] ST lever: Signal mismatch ........................................................................................1045 Failure code [DK31KA] ST lever2: Open ..................................................................................................1046 Failure code [DK31KB] ST lever2: Hot Short .............................................................................................1048 Failure code [DK40KA] Decel/Brake potentiometer: Open ..................................................................................1050 Failure code [DK40KB] Decel/Brake potentiometer: Hot Short .............................................................................1053 Failure code [DK55KX] FR lever: Main and Sub Error .....................................................................................1055 Failure code [DK55KZ] FR lever: Main and Sub Error .....................................................................................1056 Failure code [DK55L8] FR lever: Signal mismatch ........................................................................................1057 Failure code [DK56KA] FR lever1: Open ..................................................................................................1058 Failure code [DK56KB] FR lever1: Hot Short .............................................................................................1060 Failure code [DK57KA] FR lever2: Open ..................................................................................................1062 Failure code [DK57KB] FR lever2: Hot Short .............................................................................................1064 Failure code [DLM0KX] HST Motor Speed Sensor: Left/Right Error .........................................................................1066 Failure code [DLM1KA] Left HST motor speed sensor: Open ................................................................................1067 Failure code [DLM1KB] Left HST motor speed sensor: Short circuit .......................................................................1069 Failure code [DLM1MA] Left HST motor speed sensor: Malfunction .........................................................................1071 Failure code [DLM2KA] Right HST motor speed sensor: Open ...............................................................................1072 Failure code [DLM2KB] Right HST motor speed sensor: Short circuit ......................................................................1074 Failure code [DLM2MA] Right HST motor speed sensor: Malfunction ........................................................................1076 Failure code [DLM3KA] Fan rev. sensor: Open ............................................................................................1077 Failure code [DLM3KB] Fan rev. sensor: Short circuit ...................................................................................1079 Failure code [DLM3MB] Fan control: Mismatch ............................................................................................1081 Failure code [DN21FS] Decel/Brake pedal SW: Signal mismatch ............................................................................1082 Failure code [DR21KX] Camera 2 Picture Rev. Drive Abnormality ..........................................................................1084 Failure code [DR31KX] Camera 3 Picture Rev. Drive Abnormality ..........................................................................1085 Failure code [DV20KB] Back-up alarm: Short circuit .....................................................................................1086 Failure code [DW4BKA] Parking brake solenoid: Open .....................................................................................1088 Failure code [DW4BKB] Parking brake solenoid: Short circuit ............................................................................1090 Failure code [DW4BKY] Parking brake solenoid: Hot Short ................................................................................1092 Failure code [DW7BKA] Fan reverse solenoid: Open .......................................................................................1094 Failure code [DW7BKB] Fan reverse solenoid: Short circuit ..............................................................................1096 Failure code [DW7EKA] Slow brake solenoid: Open ........................................................................................1097 Failure code [DW7EKB] Slow brake solenoid: Short circuit ...............................................................................1099 Failure code [DW7EKY] Slow brake solenoid: Hot Short ...................................................................................1101 Failure code [DWN5KA] Fan EPC: Open ....................................................................................................1103 Failure code [DWN5KB] Fan EPC: Short circuit ...........................................................................................1105 Failure code [DWN5KY] Fan EPC: Hot Short ...............................................................................................1106 Failure code [DXA4KA] LF HST pump EPC: Open ............................................................................................1108 Failure code [DXA4KB] LF HST pump EPC: Short circuit ...................................................................................1110 Failure code [DXA4KY] LF HST pump EPC: Hot Short .......................................................................................1111 Failure code [DXA5KA] LR HST pump EPC: Open ............................................................................................1113 Failure code [DXA5KB] LR HST pump EPC: Short circuit ...................................................................................1115 Failure code [DXA5KY] LR HST pump EPC: Hot Short .......................................................................................1117 Failure code [DXA6KA] RF HST pump EPC: Open ............................................................................................1119 Failure code [DXA6KB] RF HST pump EPC: Short circuit ...................................................................................1121 Failure code [DXA6KY] RF HST pump EPC: Hot Short .......................................................................................1122 Failure code [DXA7KA] RR HST pump EPC: Open ............................................................................................1124 Failure code [DXA7KB] RR HST pump EPC: Short circuit ...................................................................................1126 Failure code [DXA7KY] RR HST pump EPC: Hot Short .......................................................................................1127 Failure code [DXHRKA] Blade lift up EPC: Open ..........................................................................................1129 Failure code [DXHRKB] Blade lift up EPC: Short circuit .................................................................................1131 Failure code [DXHRKY] Blade lift up EPC: Hot short .....................................................................................1132 Failure code [DXHSKA] Blade lift down EPC: Open ........................................................................................1134 Failure code [DXHSKB] Blade lift down EPC: Short circuit ...............................................................................1136 Failure code [DXHSKY] Blade lift down EPC: Hot short ...................................................................................1137 Failure code [DXHTKA] Blade tilt left EPC: Open ........................................................................................1139 Failure code [DXHTKB] Blade tilt left EPC: Short circuit ...............................................................................1141 Failure code [DXHTKY] Blade tilt left EPC: Hot short ...................................................................................1142 Failure code [DXHUKA] Blade tilt right EPC: Open .......................................................................................1144 Failure code [DXHUKB] Blade tilt right EPC: Short circuit ..............................................................................1146 Failure code [DXHUKY] Blade tilt right EPC: Hot short ..................................................................................1147 Failure code [DXJ4KA] Weq lock Sol.: Open ..............................................................................................1149 Failure code [DXJ4KB] Weq lock Sol.: Short circuit .....................................................................................1151 Failure code [DXJCKA] Blade angle left EPC: Open .......................................................................................1153 Failure code [DXJCKB] Blade angle left EPC: Short circuit ..............................................................................1154 Failure code [DXJCKY] Blade angle left EPC: Hot short ..................................................................................1155 Failure code [DXJDKA] Blade angle right EPC: Open ......................................................................................1157 Failure code [DXJDKB] Blade angle right EPC: Short circuit .............................................................................1158 Failure code [DXJDKY] Blade angle right EPC: Hot short .................................................................................1159 Failure code [DXK1KA] Left HST motor EPC: Open .........................................................................................1161 Failure code [DXK1KB] Left HST motor EPC: Short circuit ................................................................................1163 Failure code [DXK1KY] Left HST motor EPC: Hot Short ....................................................................................1164 Failure code [DXK2KA] Right HST motor EPC: Open ........................................................................................1166 Failure code [DXK2KB] Right HST motor EPC: Short circuit ...............................................................................1168 Failure code [DXK2KY] Right HST motor EPC: Hot Short ...................................................................................1169 Troubleshooting of electrical system (E-mode) ..............................................................................................1171 E-1 Engine does not start (Engine does not crank) ......................................................................................1171 E-2 Manual preheating system does not work .............................................................................................1177 E-3 Automatic preheating system does not work ..........................................................................................1180 E-4 While preheating is working, preheating monitor does not light up ..................................................................1182 E-5 When starting switch is turned to ON position, machine monitor displays nothing ....................................................1184 E-6 When starting switch is turned to ON position (with engine stopped), basic check monitor lights up .................................1187 E-7 Air cleaner clogging monitor lights up in yellow while engine is running ...........................................................1188 E-8 Charge level monitor lights up in red while engine is running ......................................................................1189 E-9 Engine coolant temperature monitor lights up in red while engine is running ........................................................1190 E-10 Engine oil pressure monitor lights up in red while engine is running ..............................................................1191 E-11 HST charge pressure monitor lights up in red while engine is running ..............................................................1192 E-12 Hydraulic oil temperature monitor lights up in red while engine is running ........................................................1193 E-13 HST oil filter clogging monitor lights up in red while engine is running ..........................................................1194 E-14 Fuel level gauge does not indicate correct level ..................................................................................1195 E-15 Engine coolant temperature gauge does not indicate correct temperature ............................................................1198 E-16 Hydraulic oil temperature gauge does not indicate correct temperature .............................................................1199 E-17 Operation mode does not change ....................................................................................................1200 E-18 Service mode cannot be selected ...................................................................................................1201 E-19 Operating customize switch does not display customize screen ......................................................................1202 E-20 Modifying setting on customize screen does not change setting of machine ..........................................................1203 E-21 Service meter is not displayed, while starting switch is in OFF position ..........................................................1204 E-22 Work equipment does not operate ...................................................................................................1205 E-23 Foot heater does not operate ......................................................................................................1207 E-24 Horn does not sound ...............................................................................................................1212 E-25 Horn does not stop sounding .......................................................................................................1214 E-26 Backup alarm does not sound .......................................................................................................1215 E-27 Backup alarm does not stop sounding ...............................................................................................1216 E-28 Headlamp does not light up ........................................................................................................1217 E-29 Rear lamp does not light up .......................................................................................................1220 E-30 No wiper operates continuously or intermittently ..................................................................................1223 E-31 Front wiper does not operate ......................................................................................................1225 E-32 Rear wiper does not operate .......................................................................................................1227 E-33 Left door wiper does not operate (failed in both continuous and intermittent operations) ..........................................1229 E-34 Right door wiper does not operate (failed in both continuous and intermittent operations) .........................................1233 E-35 Front washer does not operate .....................................................................................................1237 E-36 Rear washer does not operate ......................................................................................................1239 E-37 Left door washer does not operate .................................................................................................1241 E-38 Right door washer does not operate ................................................................................................1243 E-39 KOMTRAX system does not operate normally ..........................................................................................1245 Troubleshooting of hydraulic and mechanical system (H-mode) ................................................................................1247 Information described in troubleshooting table (H-mode) ................................................................................1247 System chart of hydraulic and mechanical systems .......................................................................................1248 Failure mode and cause table ...........................................................................................................1250 H-1 Neither RH nor LH of tracks does not travel forward nor reverse (None of the travel system operates) ...............................1254 H-2 Either RH or LH of track does not travel forward nor reverse (Only RH or LH of travel system operates) .............................1256 H-3 Either RH or LH of track travel only forward or reverse (Only forward or reverse of RH or LH of travel system does not operate) ....1257 H-4 Travel speed or power is low .......................................................................................................1259 H-5 Travel speed range does not change .................................................................................................1260 H-6 Shock is large when machine starts or stops ........................................................................................1261 H-7 Machine deviates largely ...........................................................................................................1262 H-8 Machine drift on a slope is large ..................................................................................................1264 H-9 Engine stalls during travel or engine speed drops significantly ....................................................................1265 H-10 Unusual noise is heard from around HST pump or motor ..............................................................................1266 H-11 All work equipment do not operate .................................................................................................1267 H-12 All work equipment operates slowly or lacks power .................................................................................1269 H-13 Blade lift speed or power is low ..................................................................................................1270 H-14 Blade tilt speed or power is low ..................................................................................................1271 H-15 Blade angle speed or power is low .................................................................................................1272 H-16 Time lag of blade lift is large ...................................................................................................1273 H-17 Hydraulic drift of lifted blade is large ..........................................................................................1274 H-18 Hydraulic drift of tilted blade is large ..........................................................................................1275 H-19 Unusual noise is heard from around work equipment pump or control valve ...........................................................1276 H-20 HST oil temperature (hydraulic oil temperature) rises too high ....................................................................1277 H-21 Fans speed is abnormal (high, low, or no rotation) ................................................................................1279 H-22 Unusual noise is heard from around fan ............................................................................................1281 Troubleshooting of engine (S-mode) .........................................................................................................1282 Information described in troubleshooting table (S mode) ................................................................................1282 S-1 Engine does not crank when starting switch is turned to START position .............................................................1283 S-2 Engine cranks but no exhaust smoke comes out .......................................................................................1284 S-3 Fuel is being injected but engine does not start (misfiring: engine cranks but does not start) .....................................1285 S-4 Engine startability is poor ........................................................................................................1286 S-5 Engine does not pick up smoothly ...................................................................................................1288 S-6 Engine stops during operation ......................................................................................................1290 S-7 Engine runs rough or is unstable ...................................................................................................1292 S-8 Engine lacks power .................................................................................................................1293 S-9 KDPF gets clogged in a short time ..................................................................................................1295 S-10 Engine oil consumption is excessive ...............................................................................................1297 S-11 Engine oil becomes contaminated early .............................................................................................1298 S-12 Fuel consumption is excessive .....................................................................................................1299 S-13 Oil is in coolant (or coolant spurts or coolant level goes down) ..................................................................1300 S-14 Oil pressure drops ................................................................................................................1301 S-15 Fuel mixes into engine oil ........................................................................................................1302 S-16 Water mixes into engine oil (milky) ...............................................................................................1303 S-17 Coolant temperature rises too high (overheating) ..................................................................................1304 S-18 Unusual noise is heard ............................................................................................................1305 S-19 Vibration is excessive ............................................................................................................1306 S-20 Air cannot be bled from fuel circuit ..............................................................................................1307 S-21 Active regeneration is executed frequently ........................................................................................1308 S-22 Active regeneration takes time ....................................................................................................1309 S-23 White smoke is exhausted during active regeneration ...............................................................................1310 50 Disassembly and assembly ....................................................................................................................1311 Table of contents ..........................................................................................................................1312 General information on disassembly and assembly ............................................................................................1314 How to read this manual ................................................................................................................1314 Coating materials list .................................................................................................................1316 Special tools list .....................................................................................................................1320 Sketches of special tools ..............................................................................................................1326 Engine and cooling system ..................................................................................................................1339 Removal and installation of supply pump assembly .......................................................................................1339 Removal and installation of fuel injector assembly .....................................................................................1344 Removal and installation of cylinder head assembly .....................................................................................1352 Removal and installation of radiator assembly ..........................................................................................1368 Removal and installation of aftercooler assembly .......................................................................................1372 Removal and installation of hydraulic oil cooler assembly ..............................................................................1375 Removal and installation of cooling fan drive assembly .................................................................................1377 Removal and installation of cooling fan motor assembly .................................................................................1380 Removal and installation of engine assembly ............................................................................................1382 Disassembly and assembly of damper assembly ............................................................................................1389 Removal and installation of engine front oil seal ......................................................................................1390 Removal and installation of engine rear oil seal .......................................................................................1392 Removal and installation of engine hood assembly .......................................................................................1395 Removal and installation of fuel tank assembly .........................................................................................1398 Removal and installation of KDPF assembly ..............................................................................................1402 Disassembly and assembly of KDPF assembly ..............................................................................................1405 Removal and installation of KCCV assembly ..............................................................................................1414 Removal and installation of KVGT assembly ..............................................................................................1415 Removal and installation of EGR (Exhaust Gas Recirculation) cooler assembly ............................................................1418 Removal and installation of EGR (Exhaust Gas Recirculation) valve assembly .............................................................1421 Removal and installation of belt for alternator and air conditioner compressor .........................................................1422 Removal and installation of air cleaner assembly .......................................................................................1423 Power train ................................................................................................................................1425 Removal and installation of HST pump assembly ..........................................................................................1425 Removal and installation of HST motor and final drive assembly .........................................................................1427 Disassembly and assembly of final drive ................................................................................................1430 Undercarriage and frame ....................................................................................................................1440 Removal and installation of track frame assembly .......................................................................................1440 Removal and installation of idler assembly .............................................................................................1444 Disassembly and assembly of idler ......................................................................................................1446 Removal and installation of recoil spring assembly .....................................................................................1450 Disassembly and assembly of recoil spring ..............................................................................................1451 Removal and installation of track roller assembly ......................................................................................1455 Disassembly and assembly of track roller assembly ......................................................................................1457 Removal and installation of carrier roller assembly ....................................................................................1460 Disassembly and assembly of carrier roller assembly ....................................................................................1462 Removal and installation of segment teeth ..............................................................................................1464 Separation and connection of track shoe assembly (Standard type track shoe) ............................................................1465 Separation and connection of track shoe assembly (PLUS type track shoe) ................................................................1468 Overall disassembly and assembly of track shoe assembly (Standard type track shoe) .....................................................1469 Overall disassembly and assembly of track shoe assembly (PLUS type track shoe) .........................................................1485 Disassembly and assembly of one track link assembly in field (Standard type track shoe) ................................................1492 Disassembly and assembly of one track link assembly in field (PLUS type track shoe) ....................................................1498 Removal and installation of pivot shaft assembly .......................................................................................1503 Removal and installation of equalizer bar assembly .....................................................................................1505 Removal and installation of equalizer bar side bushing .................................................................................1507 Hydraulic system ...........................................................................................................................1508 Removal and installation of hydraulic tank assembly ....................................................................................1508 Removal and installation of control valve assembly .....................................................................................1512 Disassembly and assembly of hydraulic cylinder assembly ................................................................................1515 Work equipment .............................................................................................................................1519 Removal and installation of work equipment assembly ....................................................................................1519 Removal and installation of blade assembly .............................................................................................1521 Removal and installation of U-frame assembly ...........................................................................................1523 Cab and its attachments ....................................................................................................................1525 Removal and installation of ROPS cab assembly ..........................................................................................1525 Removal and installation of operator's cab glass (adhesion glass) ......................................................................1529 Removal and installation of operator's seat ............................................................................................1535 Removal and installation of seat belt ..................................................................................................1536 Removal and installation of foot heater assembly .......................................................................................1537 Disassembly and assembly of foot heater assembly .......................................................................................1539 Removal and installation of air conditioner unit assembly ..............................................................................1540 Removal and installation of air conditioner compressor assembly ........................................................................1544 Electrical system ..........................................................................................................................1546 Removal and installation of machine monitor assembly ...................................................................................1546 Removal and installation of engine controller assembly .................................................................................1547 Removal and installation of HST controller assembly ....................................................................................1549 Removal and installation of mass air flow and temperature sensor .......................................................................1550 Removal and installation of KOMTRAX terminal ...........................................................................................1551 60 Maintenance standard ........................................................................................................................1553 Table of contents ..........................................................................................................................1554 Engine and cooling system ..................................................................................................................1555 Engine mount ...........................................................................................................................1555 Cooling fan motor ......................................................................................................................1556 Oil cooler bypass and HST charge safety valve ..........................................................................................1558 Power train ................................................................................................................................1559 Damper .................................................................................................................................1559 HST pump ...............................................................................................................................1560 HST motor ..............................................................................................................................1562 Charge pump ............................................................................................................................1563 Solenoid valve .........................................................................................................................1564 Final drive ............................................................................................................................1565 Sprocket ...............................................................................................................................1566 Full-scale drawing of sprocket tooth profile ...........................................................................................1567 Undercarriage and frame ....................................................................................................................1569 Suspension .............................................................................................................................1569 Track frame and idler cushion ..........................................................................................................1571 Idler ..................................................................................................................................1573 Track roller ...........................................................................................................................1575 Carrier roller .........................................................................................................................1579 Track shoe .............................................................................................................................1581 Hydraulic system ...........................................................................................................................1587 Hydraulic tank .........................................................................................................................1587 Work equipment and cooling fan pump ....................................................................................................1588 Control valve ..........................................................................................................................1591 Ripper PPC valve .......................................................................................................................1598 Quick drop valve .......................................................................................................................1600 Angle control EPC valve ................................................................................................................1602 Work equipment .............................................................................................................................1603 Blade ..................................................................................................................................1603 Cutting edge and end bit ...............................................................................................................1606 Ripper .................................................................................................................................1607 Lift cylinder ..........................................................................................................................1609 Tilt cylinder ..........................................................................................................................1610 Angle cylinder .........................................................................................................................1611 Ripper cylinder ........................................................................................................................1612 Cab and its attachments ....................................................................................................................1613 Cab mount ..............................................................................................................................1613 Electrical system ..........................................................................................................................1614 Electric steering lever ................................................................................................................1614 80 Appendix ....................................................................................................................................1615 Table of contents ..........................................................................................................................1616 Air conditioner components .................................................................................................................1617 Precautions for refrigerant ............................................................................................................1617 Air conditioner component ..............................................................................................................1618 Configuration and function of refrigeration cycle ......................................................................................1621 Outline of refrigeration cycle .........................................................................................................1622 Air conditioner unit ...................................................................................................................1624 Dual pressure switch ...................................................................................................................1628 Pressure switch ........................................................................................................................1629 Compressor .............................................................................................................................1630 Condenser ..............................................................................................................................1631 Receiver drier .........................................................................................................................1633 Procedure for testing and troubleshooting ..............................................................................................1634 Electrical circuit diagram .............................................................................................................1637 System diagram .........................................................................................................................1638 Parts and connectors layout ............................................................................................................1640 Testing relays .........................................................................................................................1645 Troubleshooting chart 1 ................................................................................................................1647 Troubleshooting chart 2 ................................................................................................................1648 Information described in troubleshooting table .........................................................................................1650 A-1 Troubleshooting for condenser fan ..................................................................................................1651 A-2 Troubleshooting for compressor and refrigerant system (Air is not cooled) ..........................................................1654 A-3 Troubleshooting for blower motor system (No air comes out or air flow is abnormal) .................................................1658 A-4 Troubleshooting for temperature control ............................................................................................1660 Troubleshooting with gauge pressure ....................................................................................................1663 Connection of service tool .............................................................................................................1666 Precautions for disconnecting and connecting hoses and tubes in air conditioner circuit ................................................1668 Handling of compressor oil .............................................................................................................1670 90 Diagrams and drawings .......................................................................................................................1673 Table of contents ..........................................................................................................................1674 Hydraulic circuit diagram ..................................................................................................................1675 Symbols in hydraulic circuit diagram ...................................................................................................1675 Hydraulic circuit diagram ..............................................................................................................1679 Electric circuit diagram ...................................................................................................................1680 Symbols in electric circuit diagram ....................................................................................................1680 Electrical circuit diagram .............................................................................................................1684
KOMATSU D61EX-23, D61PX-23 CRAWLER BULLDOZER SHOP MANUAL 30001 AND UP – PDF DOWNLOAD:
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