Volvo L120D Wheel Loader Workshop Repair Parts Manual PDF Electrical Wiring Diagrams - MVLVCOL120DPC.zip
This is a fully detailed service parts reference covering the Volvo L120D Wheel Loader, complete with the machine's electrical wiring schematics.
Also included as a bonus file: Volvo BM L120D Service Repair Manual.pdf
Volvo L120D Parts Catalog.pdf
PRODUCT DETAILS:
Total Pages: 1,613 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
TABLE OF CONTENTS
Volvo BM L120D Service Repair Manual................2
0 - Foreword................3
0 - GENERAL................4
00 - DESCRIPTION; COMPLETE MACHINE................5
General................6
Product identification plates................7
03 - SPECIFICATIONS................8
Capacities................9
Conversion tables................10
Section 2 Engine_50-23................13
Section 2 Engine................15
Section 3 Electrical system_49-38................17
Section 3 Electrical system................18
Section 4 Power transmission_48-52................19
Section 4 Power transmission_48-15................21
Section 5 Brakes_47-49................23
Section 5 Brakes_47-24................24
Section 6 Steering system_46-59................25
Section 6 Steering system................26
Section 8 Cab_46-08................27
Section 8 Cab................28
Section 9 Hydraulic system_45-16................29
Section 9 Hydraulic system................31
Tightening torques_44-30................33
Tightening torques_44-00................34
Volvo standard tightening torques................35
Weight_43-13................37
Weight................38
05 - TRANSPOET INSTRUCTION; STORAGE INSTRUCTION; OPERATIONG INSTRUCTION................39
Transporting the machine................40
07 - STANDARD TIME................42
Time Guide................43
08 - TOOL................52
Section 4 Power transmission................53
Section 5 Brakes................54
1 - STANDARD PARTS; SERVICE................56
16 - LUBRICANT; FUEL; OTHER FLUID................57
Recommended lubricants................58
17 - SERVICE................60
Axles; oil change................61
Charging of batteries................63
Cleanliness; brake and hydraulic systems................64
Coolant................65
Electric welding................68
Engine oil filter; changing................69
Engine oil; changing................71
Engine; air cleaner................73
Filter indicator; checking................74
Fuel system................75
Hydraulic system; general................79
Oil-bath precleaner................82
Repairing the hydraulic system................83
Safety filter (secondary filter)................84
Transmission................85
Washer fluid reservoir; windscreen_rear window................90
Manual release of parking brake; L90D_................91
Manual release of parking brake; L120D................92
Manual release of parking brake; L90D................93
Removing propeller shafts................94
Starting with booster batteries................95
Towing................96
Transporting wheel loader on another vehicle................97
2 - ENGINE WITH MOUNTING AND EQUIPMENT................98
20 - GENERAL................99
Description ................100
Engine; removing................101
Engine; installing................105
Specifications; capacities_23-54................109
Specifications; general_23-29................110
Specifications; tightening torques_23-03................111
Specifications; weight_22-37................112
Specifications; weight_22-12................113
Specifications; capacities_21-47................114
Specifications; general_21-21................115
Specifications; tightening torques_20-56................116
21 - ENGINE................117
Description; cylinder head................118
Description; cylinder liner................120
Description; pistons and piston rings; L90D................121
Description; pistons; L120D................122
Description; cylinder block................124
Specifications; general; L90D_L120D_16-54................125
Valves; adjusting................126
Description; engine transmission................128
Description; camshaft................129
Description; connecting rods................130
Description; flywheel................131
Description; frame and big-end bearing................132
Description; vibration damper................133
Description; crankshaft................134
22 - LUBRICATING SYSTEM................135
Description; lubrication and oil system................136
Lubrication system; TD63................138
Specifications; L90D_10-53................140
Specifications; L120D_10-28................141
Oil cooler; description................142
23 - FUEL SYSTEM................143
Description; general_08-47................144
Fuel injection pump................145
Fuel system; bleeding................153
Descriptions................155
Fuel feed pump; checking feed pressure................156
Fuel feed pump; checking feed pressure; L90D................158
Specifications; general; L90D_L120D................160
Combined tank unit; removing and installing................161
Specifications; capacities; L90D................165
Specifications; capacities; L120D................166
Checking stall speed................167
Fuel injection pump; TD63................169
Fuel injection pump; TD73................170
Idle speed; checking and adjusting................171
Injection timing; checking and setting................173
Specifications; general; L90D................180
Specifications; general; L120D................181
Copper tubes for injectors; changing................182
Specifications; general; L90D and L120D................186
25 - INLET & EXHAUST SYSTEM................187
Description_................188
Air cleaner; description................189
Specifications; air cleaner................190
26 - COOLING SYSTEM................191
Specifications; capacities_56-16................192
Specifications; capacities_55-51................193
Specifications; general_55-26................194
Radiator; removing and installing................195
Coolant pump for Intercooler; reconditioning................202
Coolant pump; removing and installing................208
Coolant pump for Intercooler;................217
Description_................220
Hydraulic diagram; cooling fan (hydraulically driven)................221
Hydraulically driven cooling fan;_50-10................222
Hydraulically driven cooling fan L120D; description................225
Hydraulically driven cooling fan;................229
Specifications................232
27 - ENGINE CONTROL................233
Stop solenoid; description................234
Stop solenoid; adjusting stroke................237
Stop solenoid; troubleshooting advice................238
3 - ELECTRICAL; WARNING; INFORMATION; INSTRUMENTS................239
30 - GENERAL................240
2 Software functions; engine................242
3 Software functions; electrical system................243
4 Software functions; power transmission................244
5 Software functions; brakes................245
6 Software functions; steering system................246
9 Software functions; hydraulic system................247
Air filter pressure................248
APS II................249
Axle oil temperature................253
Back-up alarm................255
Boom Suspension System (BSS)................256
Brake pressure................258
Brake test................259
Break in computer communication................260
Central lubrication................261
Communication with data buses................262
Control units; software functions................264
Coolant temperature; engine................267
Coolant temperature; outlet; radiator................268
Description of software functions table................269
Differential lock................270
Downshift audible signal (beep)................271
Electrical system; description_36-47................272
Electrical system; instructions for working on the electrical system................274
Electrical system; specifications................275
Electronic control system; description................276
Engine oil pressure................278
Engine Shut Down (power reduction)................279
Engine Shutdown................280
Engine speed for V-ECU................281
Fuel level................282
Gear selector................283
Gearshifting solenoids................286
Hydraulic oil temperature................287
Instrument control unit I-ECU; functional description................288
Interval wiper................290
Limp-Home; by-passed V-ECU................291
Output brake pressure................294
Overspeed transmission................295
Parking brake; electric................296
Parking brake; mechanical (L90D)................298
Preheating of induction air................299
Radiator fan control................301
Reduced computer communication................303
Secondary steering................304
Service interval................306
Starter inhibitor................307
Starter motor engagement................308
System voltage................309
Transmission disengagement................310
Transmission oil filter................311
Transmission oil pressure................312
Transmission oil temperature................313
Travel speed................314
Tyre radius................315
Vehicle control unit V-ECU; functional description................316
Wiping during and after washing................319
31 - BATTERY................320
Battery; charging................321
Battery; description................322
Battery; specifications................323
32 - ALTERNATOR; CHARGE REGULATOR................324
Alternator; description................325
Alternator; specifications................326
33 - STARTING SYSTEM................327
Starter motor; specifications................328
Starting system; description................329
Preheating; description................330
35 - LIGHTING................331
Lighting; description................332
Lighting; specifications................333
37 - CABLE; FUSE; RELAY................334
Wiring diagram 1. - Image................337
Wiring diagram 2. - Image................338
Wiring diagram 3. - Image................339
Wiring diagram 4. - Image................340
Wiring diagram 5. - Image................341
Wiring diagram 6. - Image................342
Wiring diagram 7. - Image................343
Wiring diagram 8. - Image................344
Wiring diagram 9. - Image................345
Wiring diagram 10. Sensors transmission - Image................346
Wiring diagram 11. - Image................347
Wiring diagram 12. - Image................348
Wiring diagram 13. - Image................349
Wiring diagram 14. - Image................350
Wiring diagram 15. - Image................351
Wiring diagram 16. - Image................352
Wiring diagram 17. - Image................353
Wiring diagram 18. - Image................354
Wiring diagram 19. - Image................355
Wiring diagram 20. - Image................356
Wiring diagram 21. - Image................357
Wiring diagram 21C. - Image................358
Wiring diagram 22. - Image................359
Wiring diagram 23. - Image................360
Wiring diagram 24. - Image................361
Wiring diagram 25. - Image................362
Wiring diagram 26. - Image................363
Wiring diagram 32. - Image................364
Wiring diagram 32B. - Image................365
Wiring diagram 140. - Image................366
Wiring diagram 190. - Image................367
Chassis connections................368
Circuit list................369
Electrical components................372
Electrical symbols and designations................391
Explanations of cable and component markings................393
Key to communication cables................396
Positive feed................397
Signal earth................398
Wiring diagram 1.................399
Wiring diagram 2.................400
Wiring diagram 3.................401
Wiring diagram 4.................402
Wiring diagram 5.................403
Wiring diagram 6.................404
Wiring diagram 7.................405
Wiring diagram 8.................406
Wiring diagram 9.................407
Wiring diagram 10. Sensors transmission................408
Wiring diagram 11.................409
Wiring diagram 12.................410
Wiring diagram 13.................411
Wiring diagram 14.................412
Wiring diagram 15.................413
Wiring diagram 16.................414
Wiring diagram 17.................415
Wiring diagram 18.................416
Wiring diagram 19.................417
Wiring diagram 20.................418
Wiring diagram 21.................419
Wiring diagram 21C.................420
Wiring diagram 22.................421
Wiring diagram 23.................422
Wiring diagram 24.................423
Wiring diagram 25.................424
Wiring diagram 26.................425
Wiring diagram 32.................426
Wiring diagram 32B.................427
Wiring diagram 140.................428
Wiring diagram 190.................429
Electrical distribution box; description................430
38 - INSTRUMENT; SENSOR; WARNING & INFORMATION SYSTEM................432
Instruments................433
Display panel and keypad; general................434
Display panel; general................437
Display panel; information displays................438
Display panel; initial display................443
Display panel; operating display................444
Display panel; setting................445
Middle instrument panel with warning lamps................448