Komatsu PC300-8M0,PC300LC-8M0,PC350-8M0,PC350LC-8M0 Shop Manual PDF

Description

Komatsu Hydraulic Excavator PC300-8M0,PC300LC-8M0,PC350-8M0,PC350LC-8M0 Shop Manual SEN06257-C6 – PDF DOWNLOAD

FILE DETAILS:

Komatsu Hydraulic Excavator PC300-8M0,PC300LC-8M0,PC350-8M0,PC350LC-8M0 Shop Manual SEN06257-C6 – PDF DOWNLOAD

Language : English
Pages : 1223
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

TABLE OF CONTENTS:

Komatsu Hydraulic Excavator PC300-8M0,PC300LC-8M0,PC350-8M0,PC350LC-8M0 Shop Manual SEN06257-C6 – PDF DOWNLOAD

Serial Number:

• PC300- C90001
• PC300LC- C90001
• PC350- C90415
• PC350- C90415

COVER 1
00 Index and foreword . 2
100 Index . 2
Composition of shop manual 3
Table of contents . 5
200 Foreword and general information 16
Foreword, safety and general information 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 connectingof push-pull type coupler . 32
Handling of electrical equipment 35
How to read electric wire code 44
Precautions when performing operation . 47
Practical use of KOMTRAX 50
Standard tightening torque table 51
List of abbreviation 55
Conversion table 60
01 Specification 66
100 Specification and technical data 66
Specification dimension drawings 67
Specifications 69
Weight table 75
Table of fuel, coolant and lubricants . 77
10 Structure, function and maintenance standard 80
100 Engine and cooling system . 80
Engine related parts 81
Radiator, oil cooler and aftercooler 82
200 Power train . 84
Power train . 85
Swing circle 86
Swing machinery . 87
Final drive . 89
Sprocket 91
300 Undercarriage and frame . 94
Track frame and recoil spring . 95
Idler . 97
Carrier roller 99
Track roller 100
Track shoe 102
401 Hydraulic system, Part 1 106
Hydraulic equipment layout drawing 107
Hydraulic tank and filter . 109
Hydraulic pump 111
402 Hydraulic system, Part 2 136
Control valve . 137
CLSS 149
Functions and operation by valve 153
Attachment circuit selector valve . 192
Hydraulic drift prevention valve 195
403 Hydraulic system, Part 3 202
Valve control . 203
PPC valve . 205
Solenoid valve 225
PPC accumulator . 227
Anti-drop valve for boom 229
Anti-drop valve for arm . 235
Center swivel joint . 242
Travel motor 244
Swing motor . 256
Work equipment cylinder . 264
500 Work equipment 268
Work equipment 269
Dimensions of components 271
600 Electrical system . 276
Engine control system . 277
Electronic control system . 286
Machine monitor system 311
Sensor 331
KOMTRAX system 334
20 Standard value table . 342
100 Standard service value table 342
Standard value table for engine related parts . 343
Standard value table for chassis related parts 344
30 Testing and adjusting 356
101 Testing and adjusting, Part 1 . 356
Tools for testing, adjusting and troubleshooting 358
Sketches of special tools . 362
Testing engine speed 363
Testing air boost pressure 364
Testing exhaust gas color . 365
Adjusting valve clearance . 367
Testing compression pressure 369
Testing blowby pressure . 373
Testing engine oil pressure . 374
Testing fuel pressure . 375
Handling during cylinder cutoutoperation 380
Handling during no-injectioncranking operation 380
Testing fuel return rate andleakage . 381
Bleeding air from fuel circuit 383
Checking fuel circuit for leakage . 384
Testing and adjusting aircompressor belt tension 385
Replacing fan belt 386
Replacing alternator belt . 387
Testing clearance in swing circlebearings . 388
Testing and adjusting track tension . 389
Testing and adjusting oil pressurein work equipment, swing andtravel circuit 390
Testing control circuit oil pressure 394
Testing and adjusting pump PCcontrol circuit oil pressure . 395
Testing and adjusting pump LScontrol circuit oil pressure . 398
Testing solenoid valve outputpressure . 403
Testing PPC valve output pressure . 407
Adjusting play of work equipmentand swing PPC valves 408
Inspecting locations of hydraulicdrift of work equipment 409
Releasing remaining pressurefrom hydraulic system . 411
Testing oil leakage amount 415
Bleeding air from various parts . 417
Testing and charging accumulator(manufactured by NOK) nitrogengas pressure for attachment (lowpressure side) 419
Testing and charging accumulatornitrogen gas pressure for attachment(high pressure side) 421
Replacing accumulator bladder onhigh pressure side for accumulatorpiping 423
102 Testing and adjusting, Part 2 . 430
Special functions of machine monitor 431
103 Testing and adjusting, Part 3 . 482
Handling voltage circuit of enginecontroller 483
Preparation work fortroubleshooting of electricalsystem . 484
Procedure for testing diodes 488
Pm clinic service . 489
40 Troubleshooting 498
100 Failure code table and fuse locations . 498
Failure codes table . 499
Fuse locations 507
200 General Information on troubleshooting 510
Symptom and troubleshooting numbers . 511
Sequence of events in troubleshooting . 513
Checks before troubleshooting . 515
Classification and procedures for troubleshooting . 517
Symptom and troubleshooting numbers . 519
Information in troubleshooting table 521
Connector list and layout . 523
Connection table for connector pin numbers 533
T- branch box and T- branch adapter table . 569
Troubleshooting method for open circuit in wiring harness of pressuresensor system 572
301 Troubleshooting by failure code, Part 1 . 576
Failure code [879AKA] A/C Inner Sensor Open Circuit . 578
Failure code [879AKB] A/C Inner Sensor Short Circuit 578
Failure code [879BKA] A/C Outer Sensor Open Circuit . 578
Failure code [879BKB] A/C Outer Sensor Short Circuit 578
Failure code [879CKA] Ventilating Sensor Open Circuit . 578
Failure code [879CKB] Ventilating Sensor Short Circuit 579
Failure code [879DKZ] Sunlight Sensor Open Or Short Circuit . 579
Failure code [879EMC] Ventilation Damper Abnormality 579
Failure code [879FMC] Air Mix Damper Abnormality 579
Failure code [879GKX] Refrigerant Abnormality . 579
Failure code [989L00] Engine Controller Lock Caution1 . 580
Failure code [989M00] Engine Controller Lock Caution2 . 581
Failure code [989N00] Engine Controller Lock Caution3 . 582
Failure code [AA10NX] Air Cleaner Clogging 583
Failure code [AB00KE] Charge Voltage Low 585
Failure code [B@BAZG] Eng Oil Press Low . 587
Failure code [B@BAZK] Engine Oil Level Low 588
Failure code [B@BCNS] Eng Water Overheat 589
Failure code [B@BCZK] Radiator Coolant Level Low 591
Failure code [B@HANS] Hyd Oil Overheat 593
Failure code [CA111] ECM Critical Internal Failure 594
Failure code [CA115] Eng Ne and Bkup Speed Sens Error . 594
Failure code [CA122] Chg Air Press Sensor High Error 595
Failure code [CA123] Chg Air Press Sensor Low Error . 597
Failure code [CA131] Throttle Sensor High Error . 599
Failure code [CA132] Throttle Sensor Low Error 601
Failure code [CA144] Coolant Temp Sens High Error . 603
Failure code [CA145] Coolant Temp Sens Low Error 605
Failure code [CA153] Chg Air Temp Sensor High Error . 607
Failure code [CA154] Chg Air Temp Sensor Low Error 609
Failure code [CA155] Chg Air Temp High Speed Derate . 611
Failure code [CA187] Sens Supply 2 Volt Low Error . 613
Failure code [CA221] Ambient Press Sens High Error 615
Failure code [CA222] Ambient Press Sens Low Error . 617
Failure code [CA227] Sens 2 Supply Volt High Error 619
Failure code [CA234] Eng Overspeed 619
Failure code [CA238] Ne Speed Sens Supply Volt Error 620
Failure code [CA271] IMV/PCV1 Short Error . 621
Failure code [CA272] IMV/PCV1 Open Error 623
Failure code [CA281] Abnormal supply pump pressure balance 625
302 Troubleshooting by failure code, Part 2 . 628
Failure code [CA322] Inj #1(L#1) Open/Short Error . 631
Failure code [CA323] Inj #5(L#5) Open/Short Error . 633
Failure code [CA324] Inj #3(L#3) Open/Short Error . 635
Failure code [CA325] Inj #6(L#6) Open/Short Error . 637
Failure code [CA331] Inj #2(L#2) Open/Short Error . 639
Failure code [CA332] Inj #4(L#4) Open/Short Error . 641
Failure code [CA342] Calibration Code Incompatibility . 643
Failure code [CA351] Injectors Drive Circuit Error 644
Failure code [CA352] Sens Supply 1 Volt Low Error . 645
Failure code [CA386] Sens Supply 1 Volt High Error 647
Failure code [CA428] Water in Fuel Sensor High Error 649
Failure code [CA429] Water in Fuel Sensor Low Error . 651
Failure code [CA435] Eng Oil Press Sw Error . 653
Failure code [CA441] Battery Voltage Low Error 655
Failure code [CA442] Battery Voltage High Error . 657
Failure code [CA449] Rail Press Very High Error . 658
Failure code [CA451] Rail Press Sensor High Error . 659
Failure code [CA452] Rail Press Sensor Low Error 661
Failure code [CA488] Chg Air Temp High Torque Derate 663
Failure code [CA553] Rail Press High Error 664
Failure code [CA559] Rail Press Low Error . 665
Failure code [CA689] Eng Ne Speed Sensor Error 667
Failure code [CA731] Eng Bkup Speed Sens Phase Error 671
Failure code [CA757] All Continuous Data Lost Error . 672
Failure code [CA778] Eng Bkup Speed Sensor Error 673
Failure code [CA2185] Throt Sens Sup Volt High Error 676
Failure code [CA2186] Throt Sens Sup Volt Low Error . 677
Failure code [CA2249] Rail Press Very Low Error . 678
Failure code [CA2265] Fuel Feed Pump Open Error . 679
Failure code [CA2266] Fuel Feed Pump Short Error 681
Failure code [CA2311] lMV Solenoid Error 682
Failure code [CA2555] Grid Htr Relay Open Circuit Error . 683
Failure code [CA2556] Grid Htr Relay Short Circuit Error 685
303 Troubleshooting by failure code, Part 3 . 688
Failure code [D110KB] Battery Relay Drive Short Circuit . 691
Failure code [D19JKZ] Personal Code Relay Abnormality . 693
Failure code [D811MC] KOMTRAX Error . 695
Failure code [D862KA] GPS Antenna Open Circuit 696
Failure code [D8AQKR] CAN2 Discon (KOMTRAX) . 697
Failure code [DA22KK] Pump Solenoid Power Low Error . 699
Failure code [DA25KP] 5V Sensor 1 Power Abnormality . 701
Failure code [DA26KP] 5V Sensor 2 Power Abnormality . 703
Failure code [DA29KQ] Model Selection Abnormality . 705
Failure code [DA2QKR] CAN2 Discon (Pump Con) 707
Failure code [DAF0MB] Monitor ROM Abnormality . 710
Failure code [DAF0MC] Monitor Error . 711
Failure code [DAF8KB] Camera Power Supply Short Circuit . 713
Failure code [DAF9KQ] Model Selection Abnormality . 715
Failure code [DAFGMC] GPS Module Error 716
Failure code [DAFQKR] CAN2 Discon . 717
Failure code [DAZ9KQ] A/C Model Selection Abnormality . 718
Failure code [DAZQKR] CAN2 Discon (Aircon ECU) 719
Failure code [DB2QKR] CAN2 Discon (Engine Con) 721
Failure code [DGH2KB] Hyd Oil Sensor Short Circuit 725
Failure code [DHA4KA] Air Cleaner Clog Sensor Open Circuit 727
Failure code [DHPAMA] F Pump Press Sensor Abnormality . 729
Failure code [DHPBMA] R Pump Press Sensor Abnormality . 731
304 Troubleshooting by failure code, Part 4 . 734
Failure code [DHS3MA] Arm Curl PPC Press Sensor Abnormality . 737
Failure code [DHS4MA] Bucket CURL PPC Press Sensor Abnormality 739
Failure code [DHS8MA] Boom Raise PPC Press Sensor Abnormality . 741
Failure code [DHS9MA] Boom Lower PPC Press Sensor Abnormality . 743
Failure code [DHSAMA] Swing RH PPC Press Sensor Abnormality . 745
Failure code [DHSBMA] Swing LH PPC Press Sensor Abnormality . 747
Failure code [DHSCMA] Arm Dump PPC Press Sensor Abnormality . 749
Failure code [DHSDMA] Bucket Dump PPC Press Sensor Abnormality 751
Failure code [DHSFMA] Travel FW L PPC Press Sensor Abnormality 753
Failure code [DHSGMA] Travel FW R PPC Press Sensor Abnormality 755
Failure code [DHSHMA] Travel BW L PPC Press Sensor Abnormality 757
Failure code [DHSJMA] Travel BW R PPC Press Sensor Abnormality 759
Failure code [DHX1MA] Overload Sensor Abnormality . 761
Failure code [DR21KX] Camera 2 Picture Rev. Drive Abnormality . 763
Failure code [DR31KX] Camera 3 Picture Rev. Drive Abnormality . 765
Failure code [DV20KB] Travel Alarm Short Circuit 767
Failure code [DW43KA] Travel Speed Sol Open Circuit . 769
Failure code [DW43KB] Travel Speed Sol Short Circuit 771
Failure code [DW45KA] Swing Brake Sol. Valve Open Circuit . 773
Failure code [DW45KB] Swing Brake Sol Short Circuit . 775
Failure code [DW91KA] Travel Neutral Sol Open Circuit . 777
Failure code [DW91KB] Travel Neutral Sol Short Circuit 779
305 Troubleshooting by failure code, Part 5 . 782
Failure code [DWA2KA] Attachment Sol Open Circuit . 783
Failure code [DWA2KB] Attachment Sol Short Circuit 785
Failure code [DWJ0KA] Merge-divider Sol. Open Circuit . 787
Failure code [DWJ0KB] Merge-divider Sol. Short Circuit 789
Failure code [DWK0KA] 2-stage Relief Sol Open Circuit . 791
Failure code [DWK0KB] 2-stage Relief Sol Short Circuit 793
Failure code [DWK2KA] Variable Back Press Sol Open Circuit 795
Failure code [DWK2KB] Variable Back Press Sol Short Circuit . 797
Failure code [DXA8KA] PC-EPC Sol Open Circuit . 799
Failure code [DXA8KB] PC-EPC Sol Short Circuit 801
Failure code [DXE0KA] LS-EPC Sol Open Circuit . 803
Failure code [DXE0KB] LS-EPC Sol Short Circuit 805
Failure code [DXE4KA] Attachment Flow EPC Open Circuit 807
Failure code [DXE4KB] Attachment Flow EPC Short Circuit . 809
Failure code [DY20KA] Wiper Working Abnormality . 811
Failure code [DY20MA] Wiper Parking Abnormality . 813
Failure code [DY2CKB] Washer Drive Short Circuit 815
Failure code [DY2DKB] Wiper Drive (Fwd) Short . 817
Failure code [DY2EKB] Wiper Drive (Rev) Short . 819
400 Troubleshooting of electrical system(E-mode) 822
Fuse locations 825
Information contained in troubleshooting table 827
E-1 Engine does not start (Engine does not crank) . 829
E-2 Preheater does not operate 834
E-3 When starting switch is turned to ON position, machine monitordisplays nothing 838
E-4 When starting switch is turned to ON position (with engine stopped),basic check monitor lights up . 841
E-5 Precaution monitor lights up while engine is running 842
E-6 Emergency stop monitor lights up while engine is running 844
E-7 Fuel level gauge does not indicate properly . 845
E-8 Engine coolant temperature gauge does not indicate properly . 847
E-9 Hydraulic oil temperature gauge does not indicate properly 848
E-10 Displays on machine monitor are different from those for actualmachine . 851
E-11 Some areas of machine monitor screen are not displayed . 852
E-12 Function switch does not operate . 852
E-13 Automatic warm-up system does not operate (in cold season) . 853
E-14 Auto-decelerator does not operate properly . 854
E-15 Working mode does not change . 855
E-16 Travel speed does not change . 856
E-17 Alarm buzzer cannot be canceled 857
E-18 When starting switch is turned OFF, service meter is not displayed . 857
E-19 Service mode cannot be selected 857
E-20 Any of work equipment, swing and travel do not operate or cannotbe locked 858
E-21 Swing holding brake does not operate properly 860
E-22 One-touch power maximizing function does not operate properly 863
E-23 Travel alarm does not sound or does not stop sounding 866
E-24 Horn does not sound or does not stop . 867
E-25 Windshield wiper and window washer do not operate 869
E-26 Machine push-up function cannot be canceled 871
E-27 Machine push-up function does not operate 873
E-28 BOOM DOWN indicator is not displayed properly with monitoringfunction 874
E-29 ARM DUMP indicator is not displayed properly with monitoringfunction . 874
E-30 ARM IN indicator is not displayed properly with monitoring functi 874
E-31 BOOM RAISE indicator is not displayed properly with monitoringfunction . 875
E-32 BUCKET CURL indicator is not displayed properly with monitoringfunction 875
E-33 BUCKET DUMP indicator is not displayed properly with monitoringfunction 875
E-34 SWING indicator is not displayed properly with monitoring function . 876
E-35 TRAVEL indicator is not displayed properly with monitoring function 876
E-36 ATTACHMENT indicator is not displayed properly with monitoringfunction . 877
E-37 Attachment hydraulic circuit cannot be changed . 879
E-38 KOMTRAX system does not operate properly . 880
500 Troubleshooting of hydraulic andmechanical system (H-mode) 882
System chart for hydraulic and mechanical system 885
Information contained in troubleshooting table 887
H-1 All work equipment lack power, or travel and swing speeds areslow . 889
H-2 Engine speed sharply drops or engine stalls . 891
H-3 No work equipment, swing or travel move . 892
H-4 Abnormal noise is heard from around hydraulic pump 892
H-5 Auto-decelerator does not work 893
H-6 Fine control mode does not function or responds slow 893
H-7 Boom moves slowly or lacks power 894
H-8 Arm moves slowly or lacks power . 895
H-9 Bucket moves slowly or lacks power 896
H-10 Work equipment does not move in its single operation . 896
H-11 Work equipment has a bit too fast hydraulic drift 897
H-12 Work equipment has big time lag 899
H-13 Other work equipment moves when relieving single circuit . 899
H-14 Power max. switch does not operate . 900
H-15 In compound operation, work equipment with larger load movesslowly . 900
H-16 In swing + boom RAISE operation, boom moves slowly . 901
H-17 In swing + travel operation, travel speed drops sharply 901
H-18 Machine swerves in travel 902
H-19 Machine travels slowly . 903
H-20 Machine cannot be easily steered or lacks power 904
H-21 Travel speed does not shift, or it is too slow or fast . 905
H-22 Track shoe does not turn (on one side only) 906
H-23 Machine does not swing . 907
H-24 Swing acceleration is poor, or swing speed is slow . 909
H-25 Excessive overrun when stopping swing 911
H-26 There is big shock when stopping swing . 912
H-27 Large sound is made when upper structure stops swinging 912
H-28 Swing hydraulic drift is too big . 913
600 Troubleshooting of engine (S-mode) 916
Method of using troubleshooting charts 918
S-1 Starting performance is poor 921
S-2 Engine does not start . 922
S-3 Engine does not pick up smoothly 925
S-4 Engine stops during operations 926
S-5 Engine does not rotate smoothly . 927
S-6 Engine lacks output (or lacks power) 928
S-7 Exhaust smoke is black (incomplete combustion) 929
S-8 Oil consumption is excessive (or exhaust smoke is blue) . 930
S-9 Oil becomes contaminated quickly 931
S-10 Fuel consumption is excessive 932
S-11 Oil is in coolant (or coolant spurts back, or coolant level goes down) . 933
S-12 Oil pressure drops . 934
S-13 Oil level rises (water, fuel in oil) . 935
S-14 Coolant temperature becomes too high (overheating) . 936
S-15 Abnormal noise is made . 937
S-16 Vibration is excessive . 938
50 Disassembly and assembly . 940
100 Related information on disassemblyand assembly 940
How to read this manual . 941
Coating materials list 943
Special tools list 947
Sketches of special tools . 951
200 Engine and cooling system . 956
Removal and installation of supply pump assembly 957
Removal and installation of engine front oil seal . 961
Removal and installation of engine rear oil seal 964
Removal and installation of cylinder head assembly 969
Removal and installation of radiator assembly . 983
Removal and installation of hydraulic oil cooler assembly . 985
Removal and installation of aftercooler assembly 987
Removal and installation of engine and hydraulic pump assembly 989
300 Power train system 996
Removal and installation of travel motor and final drive assembly . 997
Disassembly and assembly of final drive assembly 998
Removal and installation of swing motor and swing machinery assembly 1008
Disassembly and assembly of swing motor and swing machineryassembly .1009
Removal and installation of swing circle assembly .1017
400 Undercarriage and frame .1020
Disassembly and assembly of carrier roller assembly .1021
Disassembly and assembly of track roller assembly .1024
Removal and installation of idlerand idler cushion assembly .1026
Disassembly and assembly ofidler assembly .1027
Disassembly and assembly of recoil spring assembly 1030
Removal and installation of sprocket 1032
Separation and connection of track assembly .1033
Removal and installation of revolving frame assembly 1037
Removal and installation of counterweight assembly 1039
500 Hydraulic system 1044
Removal and installation of center swivel joint assembly 1045
Disassembly and assembly of center swivel joint assembly 1047
Removal and installation of hydraulic tank assembly .1048
Removal and installation of control valve assembly 1050
Disassembly and assembly ofcontrol valve assembly .1053
Removal and installation ofhydraulic pump assembly 1058
Removal and installation ofhydraulic pump input shaft oilseal .1061
Disassembly and assembly of work equipment PPC valve assem 1062
Disassembly and assembly of travel PPC valve assembly .1064
Disassembly and assembly ofwork equipment cylinderassembly 1066
600Work equipment .1074
Removal and installation of work equipment assembly .1075
Removal and installation ofanti-drop valve assembly forboom .1078
Removal and installation ofanti-drop valve assembly for arm1 1081
Disassembly and assembly ofanti-drop valve assembly .1083
700 Cab and its attachments .1086
Removal and installation of operator’s cab assembly .1087
Removal and installation of operator’s cab glass (adhered window glass) .1090
Removal and installation of frontwindow assembly 1099
Removal and installation of floor frameassembly .1105
800 Electrical system .1110
Removal and installation of air conditioner unit assembly .1111
Removal and installation of KOMTRAX terminal assembly .1116
Removal and installation of machine monitor assembly 1118
Removal and installation of pump controller assembly 1120
Removal and installation of engine controller assembly 1122
80 Appendix .1124
100 Air conditioner .1124
Precautions for refrigerant .1126
Air conditioner component .1127
Configuration and function of refrigeration cycle .1129
Outline of refrigeration cycle 1130
Air conditioner unit 1132
Air conditioner controller 1138
Compressor 1139
Condenser .1140
Receiver drier 1141
Sensor 1142
Procedure for testing and troubleshooting .1143
Circuit diagram and arrangement of connector pins .1145
System diagram 1147
Parts and connectors layout .1149
Testing air leakage (duct) 1152
Testing with self-diagnosis function 1154
Testing vent (mode) changeover 1156
Testing FRESH/RECIRC airchangeover 1157
Testing sunlight sensor .1158
Testing (dual) pressure switch for refrigerant 1159
Testing relays 1160
Troubleshooting chart 1 .1161
Troubleshooting chart 2 .1163
Information in troubleshooting table 1165
Failure code list related to air conditioner 1166
Failure code [879AKA] A/C Inner sensor Open Circuit .1167
Failure code [879AKB] A/C Inner sensor Short Circuit 1168
Failure code [879BKA] A/C Outer sensor Open Circuit .1169
Failure code [879BKB] A/C Outer sensor Short Circuit 1171
Failure code [879CKA] Ventilating sensor Open Circuit .1173
Failure code [879CKB] Ventilating sensor Short Circuit 1174
Failure code [879DKZ] Sunlight sensor Open or Short Circuit .1175
Failure code [879EMC] Ventilating Damper Abnormality 1177
Failure code [879FMC] Air Mix Damper Abnormality 1178
Failure code [879GKX] Refrigerant Abnormality .1179
Troubleshooting for power supply and CAN communication system (Airconditioner does not operate) .1181
Troubleshooting for compressor and refrigerant system (Air is notcooled) 1183
Troubleshooting for blower motor system (No air comes out or air flowis abnormal) .1186
Troubleshooting for FRESH/RECIRC air changeover .1188
Troubleshooting with gauge pressure .1190
Connection of service tool 1192
Precautions for disconnecting and connecting air conditioner piping .1194
Handling of compressor oil 1196
90 Diagrams and drawings 1200
100 Hydraulic diagrams and drawings .1200
Symbols in hydraulic circuit diagram 1201
Hydraulic circuit diagram .1204
200 Electrical diagrams and drawings 1208
Symbols in electric circuit diagram .1209
Electrical circuit diagram 1212

DESCRIPTION:

Komatsu Hydraulic Excavator PC300-8M0,PC300LC-8M0,PC350-8M0,PC350LC-8M0 Shop Manual SEN06257-C6 – PDF DOWNLOAD

Serial Number:

• PC300- C90001
• PC300LC- C90001
• PC350- C90415
• PC350- C90415

G.B 27/12/24