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KOMATSU PC290LC-8 PC290NLC-8 HYDRAULIC EXCAVATOR SHOP MANUAL UEN00001-04 – PDF DOWNLOAD
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Description
KOMATSU PC290LC-8 PC290NLC-8 HYDRAULIC EXCAVATOR SHOP MANUAL UEN00001-04 – PDF DOWNLOAD
FILE DETAILS:
KOMATSU PC290LC-8 PC290NLC-8 HYDRAULIC EXCAVATOR SHOP MANUAL UEN00001-04 – PDF DOWNLOAD
Language : English
Pages : 1146
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
TABLE OF CONTENTS:
KOMATSU PC290LC-8 PC290NLC-8 HYDRAULIC EXCAVATOR SHOP MANUAL UEN00001-04 – PDF DOWNLOAD
00 Index and foreword........................................................................................ 3 Index.................................................................................................... 3 Organization list of the shop manual................................................................. 4 Table of contents.................................................................................... 6 00 Index and foreword........................................................................................ 17 Foreword and general information......................................................................... 17 Foreword and general information..................................................................... 18 Safety notice.................................................................................... 18 How to read the shop manual...................................................................... 22 Explanation of terms for maintenance standard.................................................... 24 Handling electric equipment and hydraulic component.............................................. 26 How to read electric wire code................................................................... 34 Method of disassembling and connecting push-pull type coupler.................................... 37 Standard tightening torque table................................................................. 40 Conversion table................................................................................. 44 01 Specification............................................................................................. 51 Specification and technical data......................................................................... 51 Specification and technical data..................................................................... 52 Specification dimension drawings................................................................. 52 Working range diagram............................................................................ 53 Specifications................................................................................... 54 Weight table..................................................................................... 56 Table of fuel, coolant and lubricants............................................................ 58 10 Structure, function and maintenance standard.............................................................. 61 Engine and cooling system................................................................................ 61 Engine and cooling system............................................................................ 62 Engine related parts............................................................................. 62 Radiator, oil cooler, aftercooler and fuel cooler................................................ 63 Diesel Particulate Filter............................................................................ 64 Diesel Particulate Filter - Component Parts...................................................... 65 System Description............................................................................... 66 Regeneration..................................................................................... 66 10 Structure, function and maintenance standard.............................................................. 69 Power train.............................................................................................. 69 Power train.......................................................................................... 70 Power train...................................................................................... 70 Final drive...................................................................................... 72 Swing machinery.................................................................................. 74 Swing circle..................................................................................... 76 10 Structure, function and maintenance standard.............................................................. 79 Undercarriage and frame.................................................................................. 79 Undercarriage and frame.............................................................................. 80 Track frame and recoil spring.................................................................... 80 Idler............................................................................................ 82 Carrier roller................................................................................... 84 Track roller..................................................................................... 85 Track shoe....................................................................................... 86 10 Structure, function and maintenance standard.............................................................. 91 Hydraulic system, Part 1................................................................................. 91 Hydraulic system, Part 1............................................................................. 92 Hydraulic equipment layout drawing............................................................... 92 Hydraulic tank and filter........................................................................ 94 Hydraulic pump................................................................................... 96 Pilot oil filter................................................................................. 118 10 Structure, function and maintenance standard.............................................................. 121 Hydraulic system, Part 2................................................................................. 121 Hydraulic system, Part 2............................................................................. 122 Control valve.................................................................................... 122 CLSS............................................................................................. 133 Functions and operation by valve................................................................. 138 Hydraulic drift prevention valve................................................................. 163 10 Structure, function and maintenance standard.............................................................. 175 Hydraulic system, Part 3................................................................................. 175 Hydraulic system, Part 3............................................................................. 176 Swing motor...................................................................................... 176 Centre swivel joint.............................................................................. 186 Travel motor..................................................................................... 189 PPC valve........................................................................................ 202 Valve control.................................................................................... 224 ATT EPC Valve Assembly........................................................................... 226 Solenoid valve................................................................................... 228 PPC Accumulator.................................................................................. 230 Return oil filter................................................................................ 231 Attachment circuit selector valve................................................................ 232 Quick coupler control valve...................................................................... 234 Quick coupler control valve...................................................................... 236 Hydraulic cylinder............................................................................... 238 10 Structure, function and maintenance standard.............................................................. 241 Work equipment........................................................................................... 241 Work equipment....................................................................................... 242 Dimensions of components......................................................................... 242 10 Structure, function and maintenance standard.............................................................. 249 Cab and its attachments.................................................................................. 249 Cab and its attachments.............................................................................. 250 Air conditioner piping........................................................................... 250 10 Structure, function and maintenance standard.............................................................. 253 Electrical system........................................................................................ 253 Electrical system.................................................................................... 255 Engine control................................................................................... 255 Electrical control system........................................................................ 264 Monitor system................................................................................... 290 Sensor........................................................................................... 320 PPC Levers....................................................................................... 323 KOMTRAX terminal system.......................................................................... 325 10 Structure, function and maintenance standard.............................................................. 329 Auto Grease system....................................................................................... 329 Outline of Auto Grease System........................................................................ 330 20 Standard value table...................................................................................... 345 Standard service value table............................................................................. 345 Standard service value table......................................................................... 346 Standard value table for engine related parts.................................................... 346 Standard value table for chassis related parts................................................... 347 30 Testing and adjusting..................................................................................... 359 Testing and adjusting, Part 1............................................................................ 359 Testing and adjusting, Part 1........................................................................ 361 Tools for testing, adjusting, and troubleshooting................................................ 361 Measuring engine speed........................................................................... 364 Measuring intake air pressure (boost pressure)................................................... 365 Checking exhaust gas colour...................................................................... 366 Adjusting valve clearance........................................................................ 367 Measuring compression pressure................................................................... 369 Measuring blow-by pressure....................................................................... 371 Measuring engine oil pressure.................................................................... 372 Handling fuel system parts....................................................................... 373 Releasing residual pressure from fuel system..................................................... 373 Measuring fuel pressure.......................................................................... 374 Measuring fuel return rate and leakage........................................................... 376 Bleeding air from fuel circuit................................................................... 378 Checking fuel circuit for leakage................................................................ 380 Checking and adjusting air conditioner compressor belt tension................................... 381 Measuring swing circle bearing clearance......................................................... 382 Checking and adjusting track shoe tension........................................................ 383 Measuring and adjusting oil pressure in work equipment, swing, and travel circuits............... 385 Measuring control circuit basic pressure......................................................... 388 Measuring and adjusting oil pressure in pump PC control circuit.................................. 389 Measuring and adjusting oil pressure in pump LS control circuit.................................. 392 Measuring solenoid valve output pressure......................................................... 396 Measuring PPC valve output pressure.............................................................. 399 Adjusting play of work equipment and swing PPC valves............................................ 401 Measuring and adjusting quick coupler control valve output pressure.............................. 402 Checking parts which cause hydraulic drift of work equipment..................................... 403 Releasing residual pressure from hydraulic circuit............................................... 405 Measuring oil leakage............................................................................ 406 Bleeding air from each part...................................................................... 409 Checking cab tipping stopper..................................................................... 411 Adjusting mirrors................................................................................ 413 30 Testing and adjusting..................................................................................... 417 Testing and adjusting, Part 2............................................................................ 417 Testing and adjusting, Part 2........................................................................ 418 Special functions of machine monitor............................................................. 418 30 Testing and adjusting..................................................................................... 475 Testing and adjusting, Part 3............................................................................ 475 Testing and adjusting, Part 3........................................................................ 476 Handling high-voltage circuit of engine controller............................................... 476 Preparation work for troubleshooting of electrical system........................................ 477 Procedure for testing diodes..................................................................... 481 Pm Clinic service................................................................................ 483 40 Troubleshooting........................................................................................... 491 General information on troubleshooting................................................................... 491 General information on troubleshooting............................................................... 492 Points to remember when troubleshooting.......................................................... 492 Sequence of events in troubleshooting............................................................ 493 Check before troubleshooting..................................................................... 494 Classification and procedures for troubleshooting................................................ 495 How to read electric wire code................................................................... 499 Connection table for connector pin numbers....................................................... 502 T-boxes and T-adapters table..................................................................... 533 40 Troubleshooting........................................................................................... 539 Troubleshooting by failure code (Display of code), Part 1................................................ 539 Troubleshooting by failure code (Display of code), Part 1............................................ 541 Failure codes table.............................................................................. 541 Before carrying out troubleshooting when failure code is displayed............................... 546 Information in troubleshooting table............................................................. 552 Failure code [989L00] Engine Controller Lock Caution 1........................................... 554 Failure code [989M00] Engine Controller Lock Caution 2........................................... 554 Failure code [989N00] Engine Controller Lock Caution 3........................................... 555 Failure code [AA10NX] Air Cleaner Clogging....................................................... 555 Failure code [AB00KE] Charge Voltage Low......................................................... 556 Failure code [B@BAZG] Eng Oil Press. Low......................................................... 558 Failure code [B@BAZK] Eng Oil Level Low.......................................................... 558 Failure code [B@BCNS] Eng Water Overheat......................................................... 559 Failure code [B@BCZK] Eng Water Level Low........................................................ 559 Failure code [B@HANS] Hydr Oil Overheat.......................................................... 560 Failure code [CA111] EMC Critical Internal Failure............................................... 560 Failure code [CA115] Eng Ne and Bkup Speed Sens Error............................................ 561 Failure code [CA122] Chg Air Press Sensor High Error............................................. 562 Failure code [CA123] Chg Air Press Sensor Low Error.............................................. 564 Failure code [CA131] Throttle Sensor High Error.................................................. 566 Failure code [CA132] Throttle Sensor Low Error................................................... 568 Failure code [CA144] Coolant Temp Sens High Error................................................ 570 Failure code [CA145] Coolant Temp Sens Low Error................................................. 572 Failure code [CA153] Chg Air Temp Sensor High Error.............................................. 574 Failure code [CA154] Chg Air Temp Sensor Low Error............................................... 576 Failure code [CA155] Chg Air Temp High Speed Derate.............................................. 578 Failure code [CA187] Sens Supply 2 Volt Low Error................................................ 580 Failure code [CA221] Ambient Press Sens High Error............................................... 582 Failure code [CA222] Ambient Press Sens Low Error................................................ 584 Failure code [CA227] Sens Supply 2 Volt High Error............................................... 586 Failure code [CA234] Eng Overspeed............................................................... 587 Failure code [CA238] Ne Speed Sens Supply Volt Error............................................. 588 Failure code [CA271] IMV/PCV1 Short Error........................................................ 589 Failure code [CA272] IMV/PCV1 Open Error......................................................... 590 Failure code [CA322] Inj #1 (L#1) Open/Short Error............................................... 592 Failure code [CA323] Inj #5 (L#5) Open/Short Error............................................... 594 Failure code [CA324] Inj #3 (L#3) Open/Short Error............................................... 596 Failure code [CA325] Inj #6 (L#6) Open/Short Error............................................... 598 Failure code [CA331] Inj #2 (L#2) Open/Short Error............................................... 600 Failure code [CA332] Inj #4 (L#4) Open/Short Error............................................... 602 40 Troubleshooting........................................................................................... 605 Troubleshooting by failure code (Display of code), Part 2................................................ 605 Troubleshooting by failure code (Display of code), Part 2............................................ 607 Failure code [CA342] Calibration Code Incompatibility............................................ 607 Failure code [CA351] Injectors Drive Circuit Error............................................... 608 Failure code [CA352] Sens Supply 1 Volt Low Error................................................ 610 Failure code [CA386] Sens Supply 1 Volt High Error............................................... 612 Failure code [CA428] Water in Fuel Sensor High Error............................................. 614 Failure code [CA429] Water in Fuel Sensor Low Error.............................................. 616 Failure code [CA435] Eng Oil Press Sw Error...................................................... 618 Failure code [CA441] Battery Voltage Low Error................................................... 619 Failure code [CA442] Battery Voltage High Error.................................................. 622 Failure code [CA449] Rail Press Very High Error.................................................. 624 Failure code [CA451] Rail Press Sensor High Error................................................ 626 Failure code [CA452] Rail Press Sensor Low Error................................................. 628 Failure code [CA488] Chg Air Temp High Torque Derate............................................. 630 Failure code [CA553] Rail Press High Error....................................................... 630 Failure code [CA559] Rail Press Low Error........................................................ 631 Failure code [CA689] Eng Ne Speed Sensor Error................................................... 632 Failure code [CA731] Eng Bkup Speed Sens Phase Error............................................. 634 Failure code [CA757] All Continuous Data Lost Error.............................................. 636 Failure code [CA778] Eng Bkup Speed Sensor Error................................................. 638 Failure code [CA1633] KOMNET Datalink Timeout Error.............................................. 640 Failure code [CA2185] Throt Sens Sup Volt High Error............................................. 642 Failure code [CA2186] Throt Sens Sup Volt Low Error.............................................. 643 Failure code [CA2249] Rail Press Very Low Error.................................................. 644 Failure code [CA2311] IMV Solenoid Error......................................................... 646 Failure code [CA2555] Grid Htr Relay Volt High Error............................................. 648 Failure code [CA2556] Grid Htr Relay Volt Low Error.............................................. 650 Failure code [D19JKZ] Personal Code Relay Abnormality............................................ 652 Failure code [D862KA] GPS Antenna Discon......................................................... 654 Failure code [DA25KP] 5V Sensor 1 Power Abnormality.............................................. 655 Failure code [DA29KQ] Model Selection Abnormality................................................ 662 40 Troubleshooting........................................................................................... 665 Troubleshooting by failure code (Display of code), Part 3................................................ 665 Troubleshooting by failure code (Display of code), Part 3............................................ 668 Failure code [DA2RMC] CAN Discon (Pump Con Detected)............................................. 668 Failure code [DAFGMC] GPS Module Error........................................................... 670 Failure code [DAFRMC] CAN Discon (Monitor Detected).............................................. 672 Failure code [DGH2KB] Hydr Oil Sensor Short...................................................... 674 Failure code [DHPAMA] F Pump Press Sensor Abnormality............................................ 676 Failure code [DHPBMA] R Pump Press Sensor Abnormality............................................ 678 Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality...................................... 680 Failure code [DHS4MA] Bucket Curl PPC Press Sensor Abnormality................................... 682 Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality.................................... 684 Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality...................................... 686 Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality...................................... 688 Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality................................... 690 Failure code [DHX1MA] Overload Sensor Abnormality (Analog)....................................... 692 Failure code [DW43KA] Travel Speed Sol Discon.................................................... 694 Failure code [DW43KB] Travel Speed Sol Short..................................................... 696 Failure code [DW45KA] Swing Brake Sol Discon..................................................... 698 Failure code [DW45KB] Swing Brake Sol Short...................................................... 700 Failure code [DW91KA] Travel Junction Sol Discon................................................. 702 Failure code [DW91KB] Travel Junction Sol Short.................................................. 704 Failure code [DWA2KA] Service Sol Discon......................................................... 706 Failure code [DWA2KB] Service Sol Short.......................................................... 707 Failure code [DWK0KA] 2-stage Relief Sol Discon.................................................. 708 Failure code [DWK0KB] 2-stage Relief Sol Short................................................... 710 40 Troubleshooting........................................................................................... 713 Troubleshooting by failure code (Display of code), Part 4................................................ 713 Troubleshooting by failure code (Display of code), Part 4............................................ 716 Failure code [DXA8KA] PC-EPC (F) Sol Discon...................................................... 716 Failure code [DXA8KB] PC-EPC (F) Sol Short....................................................... 718 Failure code [DXA9KA] PC-EPC (R) Sol Discon...................................................... 720 Failure code [DXA9KB] PC-EPC (R) Sol Short....................................................... 722 Failure code [DXE0KA] LS-EPC Sol Discon.......................................................... 724 Failure code [DXE0KB] LS-EPC Sol Short........................................................... 726 Failure code [DXE4KA] Service Current EPC Discon................................................. 728 Failure code [DXE4KB] Service Current EPC Short.................................................. 730 Failure code [DXE5KA] Merge-divider Main Sol Discon.............................................. 732 Failure code [DXE5KB] Merge-divider Main Sol Short............................................... 734 Failure code [DXE6KA] Merge-divider LS Sol Discon................................................ 736 Failure code [DXE6KB] Merge-divider LS Sol Short................................................. 738 Failure code [DY20KA] Wiper Working Abnormality.................................................. 740 Failure code [DY20MA] Wiper Parking Abnormality.................................................. 742 Failure code [DY2CKA] Washer Drive Discon........................................................ 744 Failure code [DY2CKB] Washer Drive Short......................................................... 746 Failure code [DY2DKB] Wiper Drive (For) Short.................................................... 748 Failure code [DY2EKB] Wiper Drive (Rev) Short.................................................... 750 Failure code [DXEAKA] Service Current EPC1 Discon................................................ 752 Failure code [DXEAKB] Service Current EPC1 Short................................................. 753 Failure code [DXE7KA] Service Current EPC2 Discon................................................ 754 Failure code [DXE7KB] Service Current EPC2 Short................................................. 755 Failure code [DXE8KA] Service Current EPC3 Discon................................................ 756 Failure code [DXE8KB] Service Current EPC3 Short................................................. 757 Failure code [DXE9KA] Service Current EPC4 Discon................................................ 758 Failure code [DXE9KB] Service Current EPC4 Short................................................. 759 Failure code [DFB1KZ] Service Lever Potentio 1 Abnormality....................................... 762 Failure code [DFB2KZ] Service Lever Potentio 2 Abnormality....................................... 764 Failure code [DFB5KZ] Service Lever Sub Potentio 1 Abnormality................................... 766 Failure code [DFB6KZ] Service Lever Sub Potentio 2 Abnormality................................... 768 Failure code [DFB3L8] Service Lever 1 Potentio Error............................................. 770 Failure code [DFB4L8] Service Lever 2 Potentio Error............................................. 771 40 Troubleshooting........................................................................................... 775 Troubleshooting of electrical system (E-mode)............................................................ 775 Troubleshooting of electrical system (E-mode)........................................................ 777 Before carrying out troubleshooting of electrical system......................................... 777 Information in troubleshooting table............................................................. 780 E-1 When starting switch turned ON, machine monitor displays nothing............................. 782 E-2 When starting switch turned ON (before starting engine), basic check item lights up.......... 784 E-3 Engine does not start (Engine does not turn)................................................. 787 E-4 Preheater does not operate................................................................... 790 E-5 Automatic warm-up system does not operate (in cold season)................................... 792 E-6 All work equipment, swing, and travel mechanism do not move or cannot be locked.............. 794 E-7 Precaution lights up while engine is running................................................. 796 E-8 Emergency stop item lights up while engine is running........................................ 801 E-9 Engine coolant temperature gauge does not indicate normally.................................. 802 E-10 Hydraulic oil temperature gauge does not indicate normally.................................. 803 E-11 Fuel level gauge does not indicate normally................................................. 805 E-12 Contents of display by machine monitor are different from applicable machine................ 807 E-13 Machine monitor does not display some items................................................. 807 E-14 Function switch does not work............................................................... 807 E-15 Auto-decelerator does not operate normally.................................................. 808 E-16 Working mode does not change................................................................ 809 E-17 Travel speed does not change................................................................ 810 E-18 Alarm buzzer cannot be stopped.............................................................. 811 E-19 Windshield wiper and window washer do not operate........................................... 814 E-20 Power maximizing function does not operate normally......................................... 816 E-21 Swing holding brake does not operate normally............................................... 822 E-22 Travel alarm does not sound or does not stop sounding....................................... 824 E-23 Air conditioner does not operate normally (including air conditioner abnormality record).... 826 E-24 When starting switch is turned OFF, service meter is not displayed.......................... 838 E-25 Machine monitor cannot be set in service mode............................................... 838 E-26 Monitoring function does not display lever control signal normally.......................... 839 E-27 KOMTRAX system does not operate normally.................................................... 848 40 Troubleshooting........................................................................................... 851 Troubleshooting of hydraulic and mechanical system (H-mode).............................................. 851 Troubleshooting of hydraulic and mechanical system (H-mode).......................................... 854 System diagram of hydraulic and mechanical system................................................ 854 Information in troubleshooting table............................................................. 856 H-1 Speed or power of whole work equipment, swing, and travel is low............................. 857 H-2 Engine speed lowers extremely or engine stalls............................................... 859 H-3 Work equipment, swing, and travel systems do not work........................................ 860 H-4 Abnormal sound comes out from around hydraulic pump.......................................... 860 H-5 Auto-decelerator does not operate............................................................ 861 H-6 Fine control performance or response is low.................................................. 861 H-7 Speed or power of boom is low................................................................ 862 H-8 Speed or power of arm is low................................................................. 863 H-9 Speed or power of bucket is low.............................................................. 864 H-10 Work equipment does not move singly......................................................... 864 H-11 Hydraulic drift of work equipment is large.................................................. 865 H-12 Time lag of work equipment is large......................................................... 867 H-13 When part of work equipment is relieved singly, other parts of work equipment move.......... 867 H-14 Power maximizing function does not work..................................................... 868 H-15 In compound operation of work equipment, speed of part loaded more is low................... 868 H-16 When machine swings and raises boom simultaneously, boom rising speed is low................ 869 H-17 When machine swings and travels simultaneously, travel speed lowers largely................. 869 H-18 Machine deviates during travel.............................................................. 870 H-19 Travel speed is low......................................................................... 871 H-20 Machine is not steered well or steering power is low........................................ 872 H-21 Travel speed does not change or travel speed is low/high.................................... 873 H-22 Travel system does not move (only one side)................................................. 874 H-23 Upper structure does not swing.............................................................. 875 H-24 Swing acceleration or swing speed is low.................................................... 877 H-25 Upper structure overruns remarkably when it stops swinging.................................. 878 H-26 Large shock is made when upper structure stops swinging..................................... 879 H-27 Large sound is made when upper structure stops swinging..................................... 879 H-28 Hydraulic drift of swing is large........................................................... 880 H-29 Attachment circuit is not changed........................................................... 881 H-30 Oil flow in attachment circuit cannot be controlled......................................... 881 Quick coupler.................................................................................... 882 40 Troubleshooting........................................................................................... 889 Troubleshooting of engine (S-mode)....................................................................... 889 Troubleshooting of engine (S-mode)................................................................... 891 Method of using troubleshooting chart............................................................ 891 S-1 Starting performance is poor................................................................. 894 S-2 Engine does not start........................................................................ 895 S-3 Engine does not pick up smoothly............................................................. 898 S-4 Engine stops during operations............................................................... 899 S-5 Engine does not rotate smoothly.............................................................. 900 S-6 Engine lack output (or lacks power).......................................................... 901 S-7 Exhaust smoke is black (incomplete combustion)............................................... 903 S-8 Oil consumption is excessive (or exhaust smoke is blue)...................................... 904 S-9 Oil becomes contaminated quickly............................................................. 905 S-10 Fuel consumption is excessive............................................................... 906 S-11 Oil is in coolant (or coolant spurts back or coolant level goes down)....................... 907 S-12 Oil pressure drops.......................................................................... 908 S-13 Oil level rises (Entry of coolant/fuel)..................................................... 909 S-14 Coolant temperature becomes too high (overheating).......................................... 910 S-15 Abnormal noise is made...................................................................... 911 S-16 Vibration is excessive...................................................................... 912 S-17 Diesel Particulate Filter System............................................................ 913 40 Troubleshooting........................................................................................... 915 Troubleshooting of Auto Grease system.................................................................... 915 50 Disassembly and assembly.................................................................................. 923 General information on disassembly and assembly.......................................................... 923 General information on disassembly and assembly...................................................... 924 How to read this manual.......................................................................... 924 Coating materials list........................................................................... 926 Special tool list................................................................................ 929 Sketches of special tools........................................................................ 934 50 Disassembly and assembly.................................................................................. 937 Engine and cooling system................................................................................ 937 Engine and cooling system............................................................................ 938 Removal and installation of fuel supply pump assembly............................................ 938 Removal and installation of fuel injector assembly............................................... 940 Removal and installation of engine front seal.................................................... 947 Removal and installation of engine rear seal..................................................... 950 Removal and installation of cylinder head assembly............................................... 953 Removal and installation of radiator assembly.................................................... 965 Removal and installation of hydraulic oil cooler assembly........................................ 968 Removal and installation of aftercooler assembly................................................. 970 Removal and installation of fuel cooler assembly................................................. 972 Removal and installation of engine and hydraulic pump assembly................................... 973 50 Disassembly and assembly.................................................................................. 983 Power train.............................................................................................. 983 Power train.......................................................................................... 984 Removal and installation of final drive assembly................................................. 984 Disassembly and assembly of final drive assembly................................................. 985 Removal and installation of swing motor and swing machinery assembly............................. 994 Disassembly and assembly of swing motor and swing machinery assembly............................. 996 Removal and installation of swing circle assembly................................................1005 50 Disassembly and assembly..................................................................................1007 Undercarriage and frame..................................................................................1007 Undercarriage and frame..............................................................................1008 Disassembly and assembly of carrier roller assembly..............................................1008 Disassembly and assembly of track roller assembly................................................1009 Disassembly and assembly of idler assembly.......................................................1010 Disassembly and assembly of recoil spring assembly...............................................1013 Removal and installation of sprocket.............................................................1015 Expansion and installation of track shoe assembly................................................1016 Removal and installation of revolving frame assembly.............................................1018 Removal and installation of counterweight assembly...............................................1020 50 Disassembly and assembly..................................................................................1023 Hydraulic system.........................................................................................1023 Hydraulic system.....................................................................................1024 Removal and installation of center swivel joint assembly.........................................1024 Disassembly and assembly of center swivel joint assembly.........................................1026 Removal and installation of hydraulic tank assembly..............................................1027 Removal and installation of control valve assembly...............................................1030 Disassembly and assembly of control valve assembly...............................................1035 Removal and installation of hydraulic pump assembly..............................................1039 Removal and installation of oil seal in hydraulic pump input shaft...............................1043 Disassembly and assembly of work equipment PPC valve assembly....................................1044 Disassembly and assembly of travel PPC valve assembly............................................1045 Disassembly and assembly of hydraulic cylinder assembly..........................................1046 Disassembly and Assembly of Quick Coupler Valve..................................................1052 50 Disassembly and assembly..................................................................................1055 Work equipment...........................................................................................1055 Work equipment.......................................................................................1056 Removal and installation of work equipment assembly..............................................1056 50 Disassembly and assembly..................................................................................1061 Cab and its attachments..................................................................................1061 Cab and its attachments..............................................................................1062 Removal and installation of operator's cab assembly..............................................1062 Removal and installation of operator cab glass (stuck glass).....................................1065 Removal and installation of front window assembly................................................1075 Removal and installation of floor frame assembly.................................................1082 50 Disassembly and assembly..................................................................................1087 Electrical system........................................................................................1087 Electrical system....................................................................................1088 Removal and installation of air conditioner unit assembly........................................1088 Removal and installation of KOMTRAX communication modem assembly.................................1091 Removal and installation of monitor assembly.....................................................1092 Removal and installation of pump controller assembly.............................................1094 Removal and installation of engine controller assembly...........................................1095 90 Diagrams and drawings.....................................................................................1099 Hydraulic diagrams and drawings..........................................................................1099 Hydraulic diagrams and drawings (For PC290-8 K50001 ~ K50104)........................................1101 Hydraulic circuit diagram 1/2....................................................................1101 Hydraulic circuit diagram 2/2....................................................................1103 Hydraulic diagrams and drawings (For PC290-8 K50105 and up)).........................................1105 Hydraulic circuit diagram 1/2....................................................................1105 Hydraulic circuit diagram 2/2....................................................................1107 90 Diagrams and drawings.....................................................................................1111 Electrical diagrams and drawings.........................................................................1111 Electrical circuit diagram (For PC290-8 K50001 ~ K50104).............................................1113 Electrical circuit diagram (1/5).................................................................1113 Electrical circuit diagram (2/5).................................................................1115 Electrical circuit diagram (3/5).................................................................1117 Electrical circuit diagram (4/5).................................................................1119 Electrical circuit diagram (5/5).................................................................1121 Electrical diagrams and drawings (For PC290 K50105 - K50370).........................................1123 Electrical circuit diagram (1/5).................................................................1123 Electrical circuit diagram (2/5).................................................................1125 Electrical circuit diagram (3/5).................................................................1127 Electrical circuit diagram (4/5).................................................................1129 Electrical circuit diagram (5/5).................................................................1131 Electrical diagrams and drawings (For PC290 K50371 - Up).............................................1133 Electrical circuit diagram (1/5).................................................................1133 Electrical circuit diagram (2/5).................................................................1135 Electrical circuit diagram (3/5).................................................................1137 Electrical circuit diagram (4/5).................................................................1139 Electrical circuit diagram (5/5).................................................................1141 Connector arrangement diagram....................................................................1143
DESCRIPTION:
KOMATSU PC290LC-8 PC290NLC-8 HYDRAULIC EXCAVATOR SHOP MANUAL UEN00001-04 – PDF DOWNLOAD
The contents of this shop manual are shown together with Form No. in a list.
Note 1: Always keep the latest version of this manual in accordance with this list and utilize accordingly. The marks shown to the right of Form No. denote the following: Q: New issue (to be filed additionally) q: Revision (to be replaced for each Form No.)
Note 2: This shop manual can be supplied for each Form No.
Note 3: To file this shop manual in the special binder for management, handle it as follows:
• Place a divider on the top of each section in the file after matching the Tub No. with No. indicated next to each Section Name shown in the table below:
• File overview and other materials in sections in the order shown below and utilize them accordingly.
S.S 27/12/24
