Volvo EC750D L Excavators Repair Service Manual
Complete service repair manual with Electrical Wiring Diagrams for Volvo EC750D L Excavators, with all the technical information to maintain, diagnose, repair, and rebuild like professional mechanics.
Volvo EC750D L Excavators workshop service repair manual includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
Volvo EC750D L Excavators Service Repair Manual.pdf
PRODUCT DETAILS:
Total Pages: 2,805 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
TABLE OF CONTENTS
0 - Foreword...2
0 - GENERAL...3
00 - DESCRIPTION; COMPLETE MACHINE...4
Complete machine; assembly instruction...5
Product plates...72
Machine view...73
03 - SPECIFICATIONS...79
Tightening torques-...80
Measurement conversion tables...91
Valve system specifications ...100
Valve mechanism; tightening torques...101
07 - STANDARD TIME...102
Operation numbers for additional work...103
08 - TOOL...105
E-tools; NET 8940-00330 Swing motor guide pin...106
NET 8940-00510 Travel motor guide pin...108
09 - MISCELLANEOUS...109
Service positions...110
Welding on the machine...112
Hydraulic cylinders; dieseling...115
1 - STANDARD PARTS; SERVICE...119
16 - LUBRICANT; FUEL; OTHER FLUID...120
Engine oil...121
Fuel...124
Hydraulic oil...125
Recommended lubricants...130
Coolant_{15-16}...132
Coolant_{14-55}...137
Coolant with freezing and corrosion protection...141
Grease...145
Alternative fuels...149
Change capacities...152
17 - SERVICE...153
Bearings...156
Replacement parts...160
Safety when servicing...164
Service...168
Service methods...171
Pressure testing...175
Hoses and tubes...179
Cleaning prior to repair...183
VCADS Pro; Operations ...187
Arrival Inspection; according to Inspection Programme...189
Delivery Inspection; according to Inspection Programme...194
Maintenance of Stored Machines; according to Inspection Programme...198
Coolant; change...202
Maintenance service; first 500 hours...204
Maintenance service; every 10 hours...205
Maintenance service; every 50 hours...206
Maintenance service; every 250 hours...207
Maintenance service; every 500 hours...209
Maintenance service; every 1000 hours...211
Maintenance service; every 2000 hours...213
Maintenance service; every 4000 hours...215
Maintenance service; every 6000 hours...217
Service position...218
Lubrication; every 50 hours...220
Test running and checking...221
Engine belt condition; checking...223
Valves; adjusting-...224
Engine oil and filter; changing...231
Fuel filter; replacing...234
Water separator filter; replacing...236
Fuel tank breather filter; replacing...238
Engine air cleaner primary filter; replacing...240
Engine...243
Oil-bath air cleaner reservoir oil; checking...246
Oil-bath air cleaner reservoir oil; changing...248
Oil-bath air cleaner reservoir filter insert; cleaning...249
Coolant; changing ...250
Coolant freezing point; checking...252
Radiator and hydraulic oil cooler; cleaning...255
MATRIS and Tech Tool; reading...258
Software update; checking...261
Battery; checking...265
CareTrack backup battery; replacing_{18-46}...267
CareTrack backup battery; replacing_{51-50}...270
Track gearbox oil level; checking...275
Track gearbox oil; changing...276
Swing gearbox oil level; checking...277
Swing gearbox oil; changing...279
Swing ring gear bearing; lubricating...282
Swing bath grease; checking...283
Track shoe bolts; checking...284
Track tension and condition; checking...286
Cab door; covers; hinges; joints and locks; lubricating...288
Air conditioner main filter; cleaning...289
Air conditioner main filter; replacing...292
Cab prefilter; cleaning...295
Cab prefilter; replacing...297
Hydraulic oil level; checking...299
Hydraulic oil; changing...300
Hydraulic oil suction strainer; cleaning...303
Hydraulic oil drain filter; replacing...305
Hydraulic oil servo filter; replacing...306
Hydraulic oil return filter; replacing...307
Hydraulic return filter on X1 option circuit; replacing...310
Hydraulic oil tank breather filter; replacing...312
Fire suppression system; checking...314
Measuring condition...323
Cylinder speed...326
Creeping of hydraulic cylinder...328
Swing speed...330
Coasting left and right swing...331
Measuring of swing bearing clearance...333
Travel Speed...336
Track running speed...338
Straight traveling performance...340
19 - GENERAL...342
Safety concerns everybody!...343
Cautions during operation...347
Safety when handling the machine...354
Environmentally safe handling...361
2 - ENGINE WITH MOUNTING AND EQUIPMENT...365
20 - GENERAL...366
Engine; description...367
Component locations...371
Engine; weights ...373
E-ECU MID 128 pre-programmed; replacing...374
E-ECU MID 128 non-programmed; replacing...378
21 - ENGINE...382
Engine; general specifications...383
Basic check; Engine...384
Troubleshooting ...386
Camshaft and flywheel signals; checking with Tech Tool and oscilloscope...389
Engine; removing...395
Engine; installing...405
Engine; weights...414
Engine; tightening torques...415
Cylinder compression; testing...428
Valve cover; tightening torque...441
Crankcase ventilation; description...442
Cylinder block; description...445
Valve system specifications...447
Valve mechanism; tightening torques...448
Internal Exhaust Gas Recirculation (IEGR); description...449
Valves; adjusting...456
Valve cover; removing...463
Valve cover; installing_{18-25}...466
Valve cover; installing_{17-36}...468
EGR valve (internal); replacing...473
Engine mounting; tightening torque...475
22 - LUBRICATING SYSTEM...476
Lubrication system; description...477
Lubrication system; specifications...483
Lubrication system; tightening torques...484
Lubrication oil pump and oil cooler; description...488
Lubrication oil pressure; checking with pressure gauge...490
23 - FUEL SYSTEM...493
Fuel system; description...494
Fuel system; specifications...500
Fuel system; tightening torques...502
Instructions for working with electronic fuel injection...510
Carbon dioxide in fuel system; checking...513
Fuel feed pump; specifications...519
Feed pump pressure; checking...520
Fuel system; bleeding...522
Feed pump removed; reconditioning...524
Feed pump; replacing...529
Fuel tank; specifications...532
Unit injector pretension; adjusting...533
Injectors; checking...535
Injectors; replacing...546
25 - INLET & EXHAUST SYSTEM...555
Inlet and exhaust system; description...556
Inlet and exhaust system; specification...561
Inlet and exhaust system; tightening torques...564
Silencer; replacing...570
Exhaust pipe flexible tube; replacing...574
Turbocharger; description...578
Turbocharger; inspecting...581
Preheating coil; replacing...583
26 - COOLING SYSTEM...586
Cooling system; description...587
Cooling system; specifications...592
Carbon dioxide in coolant system; checking...593
Cooling system pressure; checking...599
Coolant anti-freeze resistance; checking...601
Coolant; changing...606
Expansion tank; replacing...608
Coolant pump; thermostat; specifications...610
Thermostat; replacing...612
Thermostat; checking...616
Fan belt and_or alternator belt; replacing...620
Fan belt and_or alternator-; compressor belt; replacing all belts...622
27 - ENGINE CONTROL...624
Engine - Pump control; specification...625
3 - ELECTRICAL; WARNING; INFORMATION; INSTRUMENTS...626
30 - GENERAL...627
Electrical system; special instructions for servicing; general...631
Electrical system; special instructions for servicing; electronic components...635
Electrical system; special instructions for servicing; electrical components; batteries...638
Electrical system; special instructions for servicing; electrical components; alternator and charging regulator...642
Electrical system; special instructions for servicing; action when working on machine...645
Electrical system; description...648
Electronic control system; description...650
Communication with data buses...653
Auxiliary start...655
Service connection and programming connection...659
Electrical system; specifications...662
Anti-theft system...665
CareTrack with anti-theft...668
X1 control; description...677
X1 pressure control; description...681
X3 control; description...682
Overload warning...685
ECO mode; description...687
Power derating...689
VCADS Pro; 17030-3 - Parameter; programming...692
Software parameters; description...695
General fault diagnosis information...705
Troubleshooting strategy...707
Collection of basic data...710
Information display; check...714
Error codes; build-up...717
Conditions when checking...722
Lead and connector checks...727
Troubleshooting tools...733
Special tools for troubleshooting...735
VCADS Pro service tool...737
AL3201; description and measuring...741
BA3101; description and measuring...745
CU9901; description and measuring...747
FU06; description and measuring...749
FU18; description and measuring...750
FU26; description and measuring...752
FX1005; description and measuring...754
FX1006; description and measuring...757
FX1007; description and measuring...760
FX1008; description and measuring...764
HE2501; description and measuring...767
MA2301-MA2306; description and measuring...769
MA2504; description and measuring...772
MA4212; description and measuring...774
MA9109; description and measuring...776
MA9116; description and measuring...779
MA9120; description and measuring...781
MA9121; description and measuring...783
MID140 PID251; description and measuring...785
MID140 PPID1144; description and measuring...790
MO3301; description and measuring...792
Power supply ECC; description and measuring...794
Power supply E-ECU; description and measuring...797
Power supply I-ECU; description and measuring...800
Power supply V-ECU; description and measuring...803
Power supply W-ECU; description and measuring...805
PWM2502; description and measuring...807
PWM9123; description and measuring...809
PWM9124; description and measuring...811
PWM9129; description and measuring...813
PWM9141; description and measuring...815
PWM9142; description and measuring...818
PWM9143; description and measuring...821
PWM9145; description and measuring...823
PWM9146; description and measuring...825
PWM9156; description and measuring...827
PWM9157; description and measuring...830
RE2501; description and measuring...833
RE3101; description and measuring...835
RE3301; description and measuring...838
RE3302; description and measuring...841
RE4206; description and measuring_{59-27}...843
RE4206; description and measuring_{56-04}...845
SAE J1708_1587 Information link; description and measuring...850
SAE J1939_CAN control link; description and measuring...853
SE2203; description and measuring...856
SE2301; description and measuring...859
SE2303; description and measuring...862
SE2509; description and measuring...865
SE2603; description and measuring...867
SE2606; description and measuring...869
SE2701; description and measuring...872
SE2703; description and measuring...874
SE8701; description and measuring...876
SE8702; description and measuring...879
SE8705; description and measuring...882
SE8706; description and measuring...885
SE9105; description and measuring...888
SE9121; description and measuring...891
SE9122; description and measuring...894
SE9123; description and measuring...897
SE9124; description and measuring...900
SE9125; description and measuring...903
SE9126; description and measuring...906
SE9127; description and measuring...909
SE9128; description and measuring...912
SE9131; description and measuring...915
SE9132; description and measuring...918
SE9136; description and measuring...921
SE9401; description and measuring...925
SW2701; description and measuring...928
SW3301; description and measuring...931
SW9160; description and measuring...934
SW9161; description and measuring...937
SW9162; description and measuring...939
VCADS Pro; connecting problems...941
31 - BATTERY...944
Battery; storage...945
Battery; description...948
Battery; specifications_{19-20}...951
Battery; specifications_{19-01}...952
Battery; charging...953
32 - ALTERNATOR; CHARGE REGULATOR...956
Charging; description...957
Alternator; specifications...959
Alternator; description...960
Alternator; testing...963
33 - STARTING SYSTEM...965
Starter motor; description...966
Starter motor; specifications...968
Starter motor; testing...969
Starter motor; replacing...971
Preheating; description...973
Starter switch; testing...976
35 - LIGHTING...979
Work lights and extra lights; description...980
Work lights and extra lights; specifications_{08-51}...983
Work lights and extra lights; specifications_{08-32}...986
36 - OTHER ELECTRICAL EQUIPMENT...989
Electric horn; description...991
Electric horn; specifications...992
Rotating beacon; specifications...995
Travel alarm; description...997
Travel alarm; specifications...998
Windscreen wiper; description...1001
Wiper controller; description...1003
Wiper controller; specifications...1005
Upper wiper motor; description...1007
Upper wiper motor; specifications...1009
Lower wiper motor; description...1011
Lower wiper motor; specifications...1013
Windscreen flusher pump; specifications...1015
Window limit switch; description...1017
Connectors; overview...1020
Control lockout lever switch; replacing...1028
Start switch; description...1031
Start switch; specifications...1034
Engine limp home switch; description...1036
Engine limp home switch; specifications...1038
Auto_Manual pump control switch; description...1040
Auto_Manual pump control switch; specifications...1042
Electronic climate control unit ECC; description ...1044
Instrument control unit I-ECU; functional description...1045
Vehicle control unit V-ECU; functional description...1048
Electronic climate control unit ECC; specification ...1050
Instrument control unit I-ECU; specifications...1052
I-ECU MID 140 non-programmed; replacing...1054
I-ECU MID 140 pre-programmed; replacing...1057
V-ECU MID 187 non-programmed; replacing...1060
V-ECU MID 187 pre-programmed; replacing...1064
Engine speed control switch; replacing...1068
37 - CABLE; FUSE; RELAY...1072
Electrical symbols and designations...1074
Explanation of wiring diagrams...1077
Component designations...1081
Component list Alternator; batteries; capacitors; electronic units; voltage outlet...1084
Component list; fuses...1086
Component list; Heating coils...1088
Component list; lights...1089
Component list; Miscellaneous...1091
Component list; motors...1092
Component list; relays...1094
Component list; sensors...1095
Component list; Solenoid valves...1097
Component list; Switches_{55-40}...1099
Component list; Switches_{55-21}...1101
ECC; I_O list...1103
I-ECU; I_O list...1106
W-ECU; I_O list...1109
Wiring diagram ...1111
Wiring diagram; electrical distribution box...1113
Wiring diagram SCH01_{51-19}...1116
Wiring diagram SCH01_{50-45}...1120
Wiring diagram SCH02...1124
Wiring diagram SCH03_{49-10}...1127
Wiring diagram SCH03_{48-38}...1131
Wiring diagram SCH04...1135
Wiring diagram SCH07_{47-02}...1139
Wiring diagram SCH07_{46-30}...1142
Wiring diagram SCH08_{45-40}...1145
Wiring diagram SCH08_{45-06}...1149
Wiring diagram SCH10...1153
Wiring diagram SCH11...1156
Wiring diagram SCH12_{42-40}...1159
Wiring diagram SCH12_{42-10}...1163
Wiring diagram SCH13...1167
Wiring diagram SCH14_{40-39}...1170
Wiring diagram SCH14_{40-10}...1173
Wiring diagram SCH15...1176
Wiring diagram SCH16_{38-40}...1180
Wiring diagram SCH16_{38-09}...1183
Wiring diagram SCH17_{37-29}...1186
Wiring diagram SCH17_{37-04}...1190
Wiring diagram SCH18...1194
Wiring diagram SCH19_{35-31}...1197
Wiring diagram SCH19_{35-02}...1200
Wiring diagram SCH20...1203
Wiring diagram SCH24...1206
Wiring diagram SCH30_{32-37}...1209
Wiring diagram SCH30_{32-07}...1212
Electrical distribution box_{29-17}...1215
Electrical distribution box_{28-48}...1217
Electrical distribution box; circuit board replacing...1219
Fuse; description...1223
Relay; description...1226
Relay; specifications...1229
Circuit breaker; specification...1231
38 - INSTRUMENT; SENSOR; WARNING & INFORMATION SYSTEM...1233
Instruments and controls; overview...1234
Instruments and controls; front instrument panel...1236
Instruments and controls; left instrument panel...1238
Instruments and controls; right instrument panel...1240
Instruments and controls; rear instrument panel...1243
Hour counter; description...1245
Hour counter; specifications...1247
Control lockout lever switch; description...1249
Control lockout lever switch; specifications...1252
Engine rotation speed sensor; replacing...1255
Engine rotation speed sensor (camshaft); replacing...1257
Hydraulic oil temperature sensor; replacing...1260
Menu tree...1262
Control types for X1 and X3 operation...1265
Keypad; description...1268
Keypad; specification...1272
Service mode...1275
Engine system...1277
Hydraulic system...1280
Electrical system...1283
Vehicle information...1286
Rear view camera; specifications...1288
39 - MISCELLANEOUS...1289
Audio remote controller; description...1290
Audio remote controller; specifications...1292
Radio with CD and MP3 player; description...1294
Radio with CD and MP3 player; specifications...1296
DC–DC converter; description...1298
DC–DC converter; specifications_{00-03}...1301
DC–DC converter; specifications_{59-43}...1304
CareTrack W-ECU; description...1310
Wireless control unit W-ECU; specification...1315
W-ECU; MID142; changing non-programmed ECU...1317
W-ECU; MID142; changing pre-programmed ECU...1320
CareTrack battery; replacing...1323
4 - POWER TRANSMISSION...1327
40 - GENERAL...1328
Tightening torque; specifications ...1329
Power transmission; description...1330
43 - GEARBOX...1333
Function description-...1334
Track gearbox; specifications...1335
Track gearbox; description...1336
Track gearbox; precautions for operation...1340
Track gearbox; maintenance standard...1343
Track gearbox cover; replacing...1345
Track gearbox; disassembly...1348
Track gearbox; assembly...1358
Function description ...1368
Swing gearbox; specifications...1369
Swing gearbox; description...1370
Swing gearbox; maintenance standard...1373
Swing unit; replacing...1376
Swing gearbox; replacing...1378
Swing gearbox removed; seal replacing...1383
Slew gearbox; tools...1386
Swing gearbox; disassembly...1388
Swing gearbox; assembly...1399
44 - HYDROSTATIC DRIVE...1414
Track motor; specifications...1416
Track motor; description...1417
Track motor; precautions for operation...1421
Track motor; maintenance standard_{39-08}...1424
Track motor; maintenance standard_{38-28}...1427
Track motor; maintenance standard_{37-56}...1430
Track motor; replacing...1434
Track motor relief valve; replacing...1438
Track motor; disassembly...1440
Track motor; assembly...1449
Manual release of parking brake...1463
Swing motor; specifications...1467
Swing motor; description...1468
Swing motor; maintenance standard_{32-13}...1474
Swing motor; maintenance standard_{31-52}...1476
Swing motor; maintenance standard_{31-31}...1478
Swing motor; replacing...1481
Swing motor relief valve; replacing...1485
Swing motor removed; seal replacing...1487
Slew motor; tools...1489
Swing motor; disassembly...1491
Swing motor; assembly...1498
Slew motor; troubleshooting...1507
Hydraulic pump coupling; description_{26-47}...1510
Hydraulic pump coupling; description_{26-26}...1511
Pump gearbox coupling assembly; replacing...1512
Tightening torque; specifications-...1514
Center passage; specifications...1516
Center passage; description...1517
Center passage; maintenance standard...1519
Centre passage; removing...1524
Centre passage; installing...1526
Center passage; disassembly...1528
Center passage; assembly...1531
49 - MISCELLANEOUS...1537
Swing ring gear; specifications...1538
Swing ring gear; description...1539
Swing ring gear; replacing...1542
Swing ring gear grease pipe; replacing...1546
Swing ring gear inner seal; replacing...1549
Swing ring gear outer seal; replacing...1553
7 - FRAME; SPRINGS; DAMPING; AXLE SUSPENSION; WHEEL_TRACK UNIT...1557
70 - GENERAL...1558
Undercarriage; tightening torque...1559
Frame and track unit; specifications...1561
Frame and track unit; description...1562
71 - FRAME...1564
Machine weight; specifications...1565
Superstructure; removing...1567
Superstructure; installing...1573
Tightening torque; specifications...1579
Counterweight; tightening torques...1581
Counterweight; specifications...1583
Counterweight; removing_{05-21}...1584
Counterweight; removing_{04-57}...1586
Counterweight; installing_{04-17}...1588
Counterweight; installing_{03-57}...1590
Removable counterweight cylinder; specifications...1593
Removable counterweight; removing...1595
Removable counterweight; installing...1599
Support information...1605
Undercarriage; description_{01-07}...1607
Undercarriage; description_{00-42}...1610
Retractable track; removing...1611
Retractable track; installing...1615
77 - WHEELS; TRACKS; TYRE; HUB; DRUM...1617
Selection of track shoes...1619
Idler; description...1621
Idler; measurement of wear...1623
Front idler; replacing one...1626
Idler; disassembly...1629
Idler; assembly...1632
Tools & equipment...1636
Sprocket; measurement of wear...1641
Sprocket; replacing one...1644
Track chain; description...1646
Track link; dimension...1648
Track; adjusting track sag_{49-38}...1649
Track; adjusting track sag_{49-14}...1651
Track chain; measurement of wear...1653
Track shoe; replacing one...1658
Track links; replacing...1660
Track chain assembly; removing...1664
Track chain assembly; installing...1668
Top roller; description...1671
Top roller; measurement of wear...1673
Top roller; replacing one...1676
Bottom roller; description...1679
Bottom roller; measurement of wear...1681
Bottom roller; replacing one...1684
Bottom roller; replacing seal...1687
Track guards-3830...1691
Track guards...1692
Track guard; replacing one...1693
Full track guard; replacing...1695
Spring package; assembly dimension...1698
Track tension cylinder; replacing...1699
Track recoil spring (tensioner) assembly; replacing...1702
8 - MACHINERY HOUSE; CAB; EXTERIOR TRIM PARTS ANYWHERE...1705
80 - GENERAL...1706
VCADS Pro; Operations...1707
81 - CAB; NAKED; CANOPY...1709
Cab; removing...1710
Cab; installing...1720
Cab suspension; description...1729
83 - DOORS; HATCH; COVER PLATE; (all)...1732
Door; replacing...1733
Cab door; changing door catch...1737
84 - TRIM PART; OUTSIDE; GLASS; SEALING MOULDING...1743
Rear-view mirror; replacing...1744
Windows; general...1746
Windscreen; replacing...1749
Side window; replacing...1763
Rear window; replacing...1770
Door window; replacing...1776
85 - CAB INTERIOR; UPHOLSTERY...1779
Seat; replacing...1780
Seat cushion; replacing...1785
Seat support; replacing...1791
Longitudinal adjustment cable; replacing...1797
Longitudinal suspension cable; replacing...1804
Backrest; replacing...1809
Driver's seat; description...1814
Driver's seat; specifications...1819
Seat heater; checking...1823
87 - AIR CONDITIONING UNIT...1827
Electronic climate control unit ECC; description...1828
Electronic climate control unit ECC; specification...1830
Wiring diagram...1832
HVAC system...1834
Air conditioning unit; specifications...1837
Air conditioning unit; description...1839
Performance test; AC unit...1845
Air conditioning unit; maintenance...1851
ECC MID 146 pre-programmed ECU; replacing...1854
ECC MID 146 non-programmed ECU; replacing...1858
Air distribution; description...1862
Cab filter; replacing...1865
Heating system; description...1869
Fan motor; replacing...1871
Heater core; replacing...1875
Cooler and Heater assembly; replacing...1882
Vent actuator; replacing...1891
Mode (foot) actuator; replacing...1894
Intake actuator; replacing...1897
Air mix door actuator; replacing...1900
Compressor; replacing magnetic clutch (compressor removed)...1903
Troubleshooting_{54-22}...1909
Troubleshooting_{52-52}...1919
88 - INTERIOR EQUIPMENT...1927
Instrument panel (left); replacing...1928
Instrument panel (right); replacing...1933
9 - HYDRAULIC SYSTEM; DIGGING_HANDLING_GRADING EQUIPMENT; MISCELLANEOUS...1937
90 - GENERAL...1938
Hydraulic diagram; with option components - Image B...1939
Hydraulic diagram; with option components - Image A...1941
Hydraulic diagram; standard - Image...1943
Explanations to hydraulic diagram...1945
Hydraulic diagram; standard_{41-54}...1956
Hydraulic diagram; standard_{41-33}...1959
Hydraulic diagram; with option components_{41-03}...1962
Hydraulic diagram; with option components_{40-42}...1968
Hydraulic diagram; ports...1974
Hydraulic system; position of main components...1976
Hydraulic system; cleanliness when handling hydraulic components...1979
Description; general...1983
Hydraulic system; description...1985
Recommended hydraulic oil; specifications...1986
Hydraulic pressure; specifications...1990
Hydraulic system; repair of hydraulic components in workshop...1991
Hydraulic oil; storage and handling...1996
Hydraulic components; storing and transporting...2000
Tech Tool; operations...2004
91 - WORKING HYDRAULIC; SERVO HYDRAULICS...2006
Hydraulic system; work instructions...2011
Hydraulic components; description...2016
Hydraulic oil tank; specifications...2018
Hydraulic oil tank; description...2019
Hydraulic oil tank; vacuum-pumping; connecting and disconnecting pump...2021
Air breather; description...2024
Shock reducing valve; description...2026
Servo hydraulic block...2027
Shuttle valve block; description...2029
Check valve; description...2032
Hydraulic oil cooling system; specifications...2034
Hydraulic oil cooling system; description...2036
Fan pump; description...2038
Fan pump; parts inspection...2039
Fan pump; disassembly...2041
Fan pump; assembly...2043
Fan motor; specification...2045
Fan motor; description...2046
Fan motor; disassembly...2051
Fan motor; assembly...2058
Fan motor; troubleshooting...2064
Proportional relief valve; specifications...2066
Proportional relief valve; description...2067
Main control valve; port size and tightening torque...2070
Main control valve; specifications...2071
Main control valve; description...2073
Pressure relief valve; troubleshooting...2082
Main control valve troubleshooting...2086
Control valve; part inspection...2091
General; precautions...2094
Main relief valve; description...2096
Main relief valve; adjustment...2098
Main relief valve; disassembly...2100
Port relief valve; description...2103
Port relief valve pressure; checking and adjusting...2106
2 stage port relief valve; description...2109
2 stage port relief valve; adjustment...2115
2 stage port relief valve; disassembly and assembly...2117
Boom and arm holding valve (Boom-1; Arm-1); description...2121
Boom and arm holding valve (Boom-1; Arm-1); disassembly...2125
Boom boost check valve; disassembly...2129
Cover assembly (for preventing Boom-1 spool rotation); disassembly...2131
Arm regenerating valve; description...2133
Arm parallel conflux changeover valve; disassembly...2136
Check valve (for arm parallel conflux; slew priority); disassembly...2138
Arm conflux check valve; disassembly...2140
Main control valve adjustor; adjusting...2142
Option confluence check...2144
Center bypass valve; disassembly and assembly...2146
Make up valve; description...2148
Tightening torques ...2151
Line rupture valve (boom); specifications...2155
Line rupture valve (boom); description...2156
Line rupture valve pressure; checking and adjusting...2161
Port relief valve pressure; adjustment (when installing or dismantling the line rupture valve)...2163
Line rupture valve (boom); air breathing...2165
Boom cylinder; rupture valve; replacing...2167
Disassembly and assembly; general...2171
Line rupture valve (boom); disassembly...2174
Line rupture valve (boom); assembly...2177
Line rupture valve (boom); troubleshooting...2180
Line rupture valve (arm); specifications...2183
Line rupture valve (arm); description...2184
Line rupture valve (arm); air breathing...2189
Dipper arm cylinder; rupture valve; replacing...2191
Line rupture valve (arm); disassembly...2194
Line rupture valve (arm); assembly...2197
Line rupture valve (arm); troubleshooting...2200
Hydraulic pump; specifications...2202
Hydraulic pump; description...2203
Hydraulic pump; maintenance standard; Specifications...2208
Pump; troubleshooting...2212
Pump; disassembly...2214
Pump; assembly...2220
Pump; installation...2226
Regulator; description...2228
Regulator; maintenance...2233
Regulator; disassembly...2234
Regulator; assembly...2241
Proportional solenoid valve; specifications-...2246
Proportional solenoid valve; description-...2247
Proportional solenoid valve; measuring and adjustment...2250
Proportional solenoid valve; troubleshooting...2255
Hydraulic pump (removed); changing shaft seal...2256
Hydraulic pump; replacing...2258
Hydraulic pump regulator; replacing...2270
Proportional solenoid valve (power shift); replacing...2272
Servo pump; specifications...2274
Servo pump; description...2275
Servo pump; parts inspection...2280
Servo hydraulic pressure; adjustment...2282
Servo pump; disassembly...2285
Servo pump; assembly...2291
Servo pump; replacing_{49-09}...2298
Servo pump; replacing_{48-44}...2302
Pressure accumulator; specifications...2307
Pressure accumulator; description...2308
Tightening torques_{46-10}...2311
Tightening torques_{45-49}...2317
Remote control valve (Lever); specifications_{45-18}...2322
Remote control valve (Lever); specifications_{45-00}...2326
Remote control valve (Lever); description_{44-32}...2328
Remote control valve (Lever); description_{43-57}...2341
Remote control valve (Lever); maintenance standard; Specifications_{43-04}...2351
Remote control valve (Lever); maintenance standard; Specifications_{42-46}...2355
Remote control valve (lever); replacing...2358
Remote control valve (Lever); disassembly_{41-36}...2370
Remote control valve (Lever); disassembly_{41-08}...2382
Remote control valve (Lever); assembly_{40-05}...2395
Remote control valve (Lever); assembly_{39-38}...2407
Remote control valve (Lever); troubleshooting_{38-42}...2420
Remote control valve (Lever); troubleshooting_{38-23}...2423
Remote control valve (pedal); specifications-3758...2426
Remote control valve (pedal); description...2427
Remote control valve (pedal); maintenance standard; Specifications...2435
Remote control valve (pedal); replacing...2438
Remote control valve (pedal); disassembly...2443
Remote control valve (pedal); assembly...2453
Remote control valve (pedal); troubleshooting...2465
Solenoid valve; specifications ...2468
Solenoid valve; description ...2469
Solenoid valve; inspection...2471
Solenoid valve; troubleshooting...2473
Solenoid valve; disassembly and assembly...2477
Tightening torques...2480
X1 Line; description...2483
Hammer and shear pedal valve (RCV); replacing...2488
Hammer return filter; specifications_{29-07}...2491
Hammer return filter; specifications_{28-47}...2494
Hammer return filter; description...2496
Solenoid valve; specifications...2498
Solenoid valve; description...2500
3 way selector valve; description...2502
Proportional solenoid valve; specifications...2504
Proportional solenoid valve; description...2505
Stop valve...2508
Remote control valve (pedal); specifications...2510
Straight travel pedal; description...2512
Single pedal stopper position...2516
Rotator pump; specifications...2518
Rotator pump; description...2519
Rotator pump; disassembly...2523
Rotator pump; assembly...2526
Rotator pump; parts inspection...2529
Rotator (X3 Line option); description...2531
Rotator valve; adjustment...2535
Boom float position; description...2537
92 - MECHANICAL EQUIPMENT_ATTACHMENT...2541
Attachment quick coupler; description...2542
Attachment quick coupler; operation...2553
Attachment quick coupler; replacing_{18-55}...2555
Attachment quick coupler; replacing_{18-29}...2564
Attachment quick coupler; adjustment...2574
97 - UNIT; DIGGING...2578
Tightening torques...2580
Function description...2590
Digging unit; maintenance...2593
Bushing general; replacing...2597
Cylinder; description...2602
Cylinder; disassembly and assembly_{14-21}...2607
Cylinder; disassembly and assembly_{13-56}...2626
Cylinder; troubleshooting...2642
Boom; specifications...2646
Boom; description...2647
Boom; replacing...2649
Boom cylinder; specifications...2666
Boom cylinder; description...2668
Boom cylinder; replacing...2671
Lower boom cylinder bushing; replacing...2681
Upper boom cylinder bushing; replacing...2686
Dipper arm; specifications...2690
Dipper arm; description...2691
Dipper arm; replacing...2693
Link; description...2706
Dipper arm connecting rod; replacing...2708
Connecting rod yoke; replacing...2715
Dipper arm cylinder; specifications...2724
Dipper arm cylinder; description...2726
Dipper arm cylinder; replacing...2728
Dipper arm cylinder bushing on boom; replacing...2738
Dipper arm cylinder bushing on dipper arm; replacing...2743
Bucket cylinder; specifications...2747
Bucket cylinder; description...2749
Bucket cylinder; replacing...2752
Bucket cylinder bushing on dipper arm; replacing...2763
Bucket cylinder bushing lever-link; replacing...2768
99 - MISCELLANEOUS...2772
Fire Suppression System; tightening torques...2773
Fire suppression system; specification...2774
Fire suppression system; component location...2775
Fire suppression system; functional description...2777
Fire suppression system; component description...2779
Fire suppression system; actions after manual activation...2783
Fire suppression system; actions after activation...2801
Overview...2816
Automatic lubrication system; specifications...2819
Automatic lubrication system; description...2822
Central lubrication system; description...2827
Control units; software functions...2833
Maintenance service; general...2842
Troubleshooting...2844
Bleeding air...2849
Volvo EC750D L Excavators Repair Service Manual
