Bobcat S850 Skid-Steer Loader Service Manual 6987479 – PDF DOWNLOAD

Description

Bobcat S850 Skid-Steer Loader Service Manual 6987479 – PDF DOWNLOAD

FILE DETAILS:

Bobcat S850 Skid-Steer Loader Service Manual 6987479 – PDF DOWNLOAD

Language : English
Pages : 1250
Downloadable : Yes
File Type : PDF

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION:

Bobcat S850 Skid-Steer Loader Service Manual 6987479 – PDF DOWNLOAD

S/N ACS711001 & Above
S/N ACSL11001 & Above

FOREWORD:

This manual is for the Bobcat loader mechanic. It provides necessary servicing and adjustment procedures for the Bobcat loader and its component parts and systems. Refer to the Operation & Maintenance Manual for operating instructions, starting procedure, daily checks, etc.

A general inspection of the following items must be made after the loader has had service or repair:

TABLE OF CONTENTS:

Bobcat S850 Skid-Steer Loader Service Manual 6987479 – PDF DOWNLOAD

MAINTENANCE SAFETY 3
CONTENTS 5
FOREWORD 7
FOREWORD 9
SAFETY INSTRUCTIONS 11
FIRE PREVENTION 13
Maintenance 13
Operation 13
Electrical 13
Hydraulic System 13
Fueling 13
Starting 13
Spark Arrester Exhaust System 13
Welding And Grinding 14
Fire Extinguishers 14
SERIAL NUMBER LOCATIONS 15
Loader Serial Number 15
Engine Serial Number 15
DELIVERY REPORT 16
LOADER IDENTIFICATION 17
SAFETY AND MAINTENANCE 19
LIFTING AND BLOCKING THE LOADER 23
Procedure 23
LIFT ARM SUPPORT DEVICE 25
Installing 25
Removing 26
OPERATOR CAB 27
Description 27
Raising 28
Lowering 29
Cab Door Sensor 30
Special Applications Kit 31
Special Applications Kit Inspection And Maintenance 31
Forestry Door And Window Kit 31
Forestry Door And Window Kit Inspection And Maintenance 32
TRANSPORTING LOADER ON A TRAILER 33
Loading And Unloading 33
Fastening 33
TOWING THE LOADER 35
Procedure 35
REMOTE START TOOL KIT – MEL1563 37
Remote Start Tool – MEL1563 37
Service Tool Harness Communicator – MEL1566 38
Remote Start Procedure 39
REMOTE START TOOL (SERVICE TOOL) KIT – 7217666 43
Description 43
Remote Start Tool (Service Tool) – 7022042 44
Loader Service Tool Harness – 6689747 45
Computer Service Tool Harness – 6689746 46
Remote Start Procedure 47
SERVICE SCHEDULE 51
Maintenance Intervals 51
AIR CLEANER SERVICE 53
Replacing Filter Elements 53
ENGINE COOLING SYSTEM 55
Maintenance Platform 55
Cooling System Identification 55
Cleaning (Earlier Models) 56
Cleaning (Later Models) 58
Checking Level 60
Removing And Replacing Coolant 60
FUEL SYSTEM 61
Fuel Specifications 61
Biodiesel Blend Fuel 61
Filling The Fuel Tank 62
Fuel Filter 63
Removing Air From The Fuel System 63
ENGINE LUBRICATION SYSTEM 65
Checking And Adding Engine Oil 65
Engine Oil Chart 65
Removing And Replacing Oil And Filter 66
HYDRAULIC / HYDROSTATIC SYSTEM 69
Checking And Adding Fluid 69
Hydraulic / Hydrostatic Fluid Chart 69
Removing And Replacing Hydraulic Fluid 70
Hydraulic / Hydrostatic Filter Identification 72
Removing And Replacing Hydraulic / Hydrostatic Filter (Earlier Models) 73
Removing And Replacing Hydraulic / Hydrostatic Filter (Later Models) 74
Removing And Replacing Hydraulic Charge Filter 75
Breather Cap 77
FINAL DRIVE TRANSMISSION (CHAINCASE) 79
Checking And Adding Oil 79
Removing And Replacing Oil 79
BOB-TACH (HAND LEVER) 81
Inspection And Maintenance 81
BOB-TACH (POWER) 83
Inspection And Maintenance 83
LUBRICATING THE LOADER 85
Lubrication Locations 85
TIRE MAINTENANCE 89
Wheel Nuts 89
Rotating 89
Mounting 90
SPARK ARRESTER MUFFLER 91
Cleaning Procedure 91
PIVOT PINS 93
Inspection And Maintenance 93
LOADER STORAGE AND RETURN TO SERVICE 95
Storage 95
Return To Service 95
STOPPING THE ENGINE AND LEAVING THE LOADER 97
Procedure 97
EMERGENCY EXIT 99
Rear Window Identification 99
Rear Window Removal (Latches) 99
Rear Window Removal (Rubber Cord) 100
External Access (Rear Window With Latches) 100
External Access (Rear Window With Rubber Cord) 101
Front Door 101
SEAT BELT 103
Inspection And Maintenance 103
AUTOMATIC RIDE CONTROL 105
Description 105
Procedure 105
Checking Accumulator Charge 106
HYDRAULIC SYSTEM 107
HYDRAULIC / HYDROSTATIC SCHEMATICS 115
HYDRAULIC SYSTEM INFORMATION 131
Glossary Of Hydraulic / Hydrostatic Symbols 131
Troubleshooting 135
CYLINDER (LIFT) 137
Testing 137
Removal And Installation 138
Parts Identification (Earlier Models) 142
Parts Identification (Later Models) 143
Disassembly 144
Assembly 146
CYLINDER (TILT) 149
Testing 149
Removal And Installation 150
Base End Pivot Pin Removal And Installation 152
Parts Identification (Earlier Models) 153
Parts Identification (Later Models) 154
Disassembly 155
Assembly 158
CYLINDER (BOB-TACH) 163
Testing 163
Removal And Installation 164
Parts Identification 165
Disassembly 166
Assembly 167
MAIN RELIEF VALVE (S/N ACS711001 – ACS712833 AND S/N ACSL11001 – ACSL12349) 171
Description 171
Testing 172
Adjusting 174
Removal And Installation 174
MAIN RELIEF VALVES (S/N ACS712834 & ABOVE AND S/N ACSL12350 & ABOVE) 177
Description 177
Testing 177
Main Relief Valve Adjustment 180
Main Relief Valve Removal And Installation 180
Auxiliary Relief Valve Adjustment 181
Auxiliary Relief Valve Removal And Installation 182
HYDRAULIC CONTROL VALVE (SJC) (S/N ACS711001 – ACS712833 AND S/N ACSL11001 – ACSL12349) 183
Description 183
Removal And Installation 184
Actuator Removal And Installation (In Loader) 188
Actuator Removal And Installation (Out Of Loader) 190
Identification Chart 193
Mount Bracket Removal And Installation 194
Lift Load Check Valve Removal And Installation 194
Load Check Valve Removal And Installation (Tilt And Auxiliary) 195
Anti-Cavitation Valve Removal And Installation (Lift, Rod End) 196
Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End) 196
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End) 197
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End) 197
Port Relief Valve Removal And Installation 198
Plug Removal And Installation 199
End Cap Block Removal And Installation 200
Lift Spool Removal And Installation 200
Lift Spool Disassembly And Assembly 202
Tilt Spool Removal And Installation 204
Auxiliary Spool Removal And Installation 206
Auxiliary Solenoid Removal And Installation 207
Solenoid Removal And Installation 208
Lock Valve Removal And Installation 209
Lift Arm Bypass Orifice Removal And Installation 210
Main Relief Valve Removal And Installation 210
Check Valve Removal And Installation 211
HYDRAULIC CONTROL VALVE (SJC) (S/N ACS712834 & ABOVE AND S/N ACSL12350 & ABOVE) 213
Description 213
Removal And Installation 214
Actuator Removal And Installation (In Loader) 218
Actuator Removal And Installation (Out Of Loader) 219
Identification Chart 222
Mount Bracket Removal And Installation 223
Lift Load Check Valve Removal And Installation 223
Load Check Valve Removal And Installation (Tilt And Auxiliary) 224
Anti-Cavitation Valve Removal And Installation (Lift, Rod End) 225
Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End) 225
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End) 226
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End) 226
Port Relief Valve Removal And Installation 227
Plug Removal And Installation 229
End Cap Block Removal And Installation 230
Lift Spool Removal And Installation 230
Lift Spool Disassembly And Assembly 232
Tilt Spool Removal And Installation 233
Auxiliary Spool Removal And Installation 235
Auxiliary Solenoid Removal And Installation 236
Solenoid Removal And Installation 237
Lock Valve Removal And Installation 238
Lift Arm Bypass Orifice Removal And Installation 240
Main Relief Valve Removal And Installation 240
Auxiliary Relief Valve Removal And Installation 241
Check Valve Removal And Installation 241
HYDRAULIC CONTROL VALVE (SCPA) (S/N ACS711001 – ACS712833 AND S/N ACSL11001 – ACSL12349) 243
Description 243
Removal And Installation 244
Mount Bracket Removal And Installation 248
Identification Chart 249
Lift Load Check Valve Removal And Installation 250
Load Check Valve Removal And Installation (Tilt And Auxiliary) 251
Anti-Cavitation Valve Removal And Installation (Lift, Rod End) 252
Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End) 252
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End) 253
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End) 253
Port Relief Valve Removal And Installation 254
Plug Removal And Installation 255
Rubber Boot Removal And Installation 256
End Cap Block Removal And Installation 257
Lift Spool And Detent Removal And Installation 258
Tilt Spool Removal And Installation 268
Auxiliary Spool Removal And Installation 270
Auxiliary Solenoid Removal And Installation 272
Solenoid Removal And Installation 273
Lock Valve Removal And Installation 274
Lift Arm Bypass Orifice Removal And Installation 276
Main Relief Valve Removal And Installation 276
Check Valve Removal And Installation 277
HYDRAULIC CONTROL VALVE (SCPA) (S/N ACS712834 & ABOVE AND S/N ACSL12350 & ABOVE) 279
Description 279
Removal And Installation 280
Mount Bracket Removal And Installation 283
Identification Chart 284
Lift Load Check Valve Removal And Installation 285
Load Check Valve Removal And Installation (Tilt And Auxiliary) 286
Anti-Cavitation Valve Removal And Installation (Lift, Rod End) 287
Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End) 287
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End) 288
Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End) 288
Port Relief Valve Removal And Installation 289
Plug Removal And Installation 291
Rubber Boot Removal And Installation 292
End Cap Block Removal And Installation 292
Lift Spool And Detent Removal And Installation 293
Tilt Spool Removal And Installation 301
Auxiliary Spool Removal And Installation 303
Auxiliary Solenoid Removal And Installation 304
Solenoid Removal And Installation 304
Lock Valve Removal And Installation 306
Lift Arm Bypass Orifice Removal And Installation 308
Main Relief Valve Removal And Installation 308
Auxiliary Relief Valve Removal And Installation 309
Check Valve Removal And Installation 309
LIFT ARM BYPASS CONTROL VALVE 311
Description 311
Testing 311
Removal And Installation 312
Bracket Removal And Installation 313
Disassembly And Assembly 314
HYDRAULIC PUMP 315
Description 315
Pump Test At Quick Couplers 315
Direct Pump Test (Standard Section) 316
Direct Pump Test (Charge Section) 318
Removal And Installation 320
Hydraulic Pump Startup 323
Parts Identification 324
Disassembly And Assembly 325
HYDRAULIC PUMP (HIGH FLOW) 327
Description 327
Pump Test At Quick Couplers 327
Direct Pump Test (Standard Section) 328
Direct Pump Test (Charge Section) 329
Direct Pump Test (High Flow Section) 331
High Flow Relief Valve Adjustment 333
High Flow Relief Valve Removal And Installation 334
Solenoid Removal And Installation 335
Removal And Installation 336
Hydraulic Pump Startup 339
Parts Identification 340
Disassembly And Assembly 341
HYDRAULIC / HYDROSTATIC FILTERS (EARLIER MODELS) 343
Description 343
Housing Removal And Installation 343
HYDRAULIC / HYDROSTATIC FILTERS (LATER MODELS) 345
Description 345
Housing Removal And Installation 345
HYDRAULIC FLUID RESERVOIR (EARLIER MODELS) 347
Description 347
Removal And Installation 347
Hydraulic Fluid Screen 348
HYDRAULIC FLUID RESERVOIR (LATER MODELS) 349
Description 349
Removal And Installation 349
Hydraulic Fluid Screen 350
OIL COOLER (EARLIER MODELS) 351
Description 351
Removal And Installation 351
OIL COOLER (LATER MODELS) 353
Removal And Installation 353
BUCKET POSITION VALVE 355
Description 355
Solenoid Removal And Installation 355
Solenoid Testing 356
Removal And Installation 357
Disassembly And Assembly 359
REAR AUXILIARY DIVERTER VALVE 361
Description 361
Solenoid Testing 361
Removal And Installation 362
Disassembly And Assembly 363
BOB-TACH (POWER) BLOCK (EARLIER MODELS) 369
Description 369
Removal And Installation 369
Disassembly And Assembly 371
BOB-TACH (POWER) BLOCK (LATER MODELS) 381
Description 381
Testing Relief Valve 382
Removal And Installation 384
Disassembly And Assembly 386
FRONT AUXILIARY HYDRAULIC COUPLER BLOCK 391
Description 391
Removal And Installation 392
Disassembly And Assembly (FFI/FI) 392
Disassembly And Assembly (FFH/FH) 394
AUTOMATIC RIDE CONTROL 397
Description 397
Removal And Installation 398
Checking The Pressure In The Accumulator 401
Adding Nitrogen To The Accumulator 403
HYDROSTATIC SYSTEM 405
HYDROSTATIC SYSTEM INFORMATION 407
Troubleshooting 407
Description 408
HYDROSTATIC DRIVE MOTOR (TWO-SPEED) (S/N ACS711001 – ASC712799 AND S/N ACSL11001 – ACSL12349) 409
Description 409
Removal And Installation 409
Parts Identification 412
Disassembly 413
Assembly 419
HYDROSTATIC MOTOR (TWO-SPEED) (S/N ACS712800 & ABOVE AND S/N ACSL12350 & ABOVE) 425
Description 425
Removal And Installation 425
Parts Identification 428
Disassembly 429
Assembly 435
HYDROSTATIC MOTOR CARRIER (SJC AND SCPA) 441
Description 441
Removal And Installation 442
Parts Identification 444
Disassembly 445
Assembly 447
CHARGE PRESSURE (EARLIER MODELS) 451
Description 451
Testing 451
Sender Removal And Installation 453
Adjusting 454
CHARGE PRESSURE (LATER MODELS) 455
Description 455
Testing 455
Sender Removal And Installation 457
Adjusting 458
HYDROSTATIC PUMP (SJC AND SCPA) 459
Description 459
Hydraulic Controller Removal And Installation 460
Removal And Installation 462
Hydrostatic Pump Startup 463
Parts Identification 464
High Pressure Relief And Bypass Valve 465
Charge Relief Valve 466
Disassembly 467
Inspection 476
Assembly 479
Mechanical Neutral Adjustment 489
Hydraulic Controller Neutral Adjustment 492
DRIVE BELT 495
Belt Adjustment 495
Stop Adjustment 495
Belt Replacement 495
Tensioner Pulley Removal And Installation 498
Tensioner Pulley Disassembly And Assembly 499
TWO-SPEED / BRAKE VALVE (S/N ACS711001 – ACS712799 AND S/N ACSL11001 – ACSL12349) 501
Description 501
Valve Block Removal And Installation 502
Valve Block Disassembly And Assembly 504
TWO-SPEED / BRAKE VALVE (S/N ACS7112800 & ABOVE AND S/N ACSL12350 & ABOVE) 507
Description 507
Valve Block Removal And Installation 508
Valve Block Disassembly And Assembly 510
DRAIN MANIFOLD 513
Description 513
Drain Manifold Removal And Installation 513
DRIVE SYSTEM 515
BRAKE (TWO-SPEED) 517
Description 517
DRIVE COMPONENTS 519
Description 519
Axle Seal Removal And Installation 520
Axle, Sprocket And Bearings Removal And Installation 522
Chain Removal And Installation 527
CHAINCASE 529
Description 529
Front Cover Removal And Installation 529
Center Cover Removal And Installation 530
Rear Cover Removal And Installation 531
MAINFRAME 533
SEAT BAR 537
Description 537
Removal And Installation 537
Disassembly And Assembly 538
Compression Spring Disassembly And Assembly 539
OPERATOR CAB 541
Gas Spring Removal And Installation 541
Gas Spring Bracket Disassembly And Assembly 542
Removal And Installation 542
OPERATOR SEAT (SUSPENSION) 545
Removal And Installation 545
Slide Rail Removal And Installation 545
Seat Belt Removal And Installation 546
Lower Cushion Removal 546
Lower Cushion Installation 547
Back Cushion Removal And Installation 547
Shock Removal And Installation 548
3-Point Seat Belt Removal And Installation 548
BOB-TACH (HAND LEVER) 551
Description 551
Removal And Installation 551
Lever And Wedge Disassembly And Assembly 553
Pivot Pin Bushing And Seal Removal And Installation 555
BOB-TACH (POWER) 557
Description 557
Removal And Installation 557
Lever And Wedge Disassembly And Assembly 560
Pivot Pin Bushing And Seal Removal And Installation 562
LIFT ARMS 563
Stabilizer Bar Removal And Installation 563
Link Removal And Installation 564
Removal And Installation 566
REAR GRILLE 571
Removing 571
Installing 571
Shield Removal And Installation 572
REAR DOOR (TAILGATE) 573
Removal And Installation 573
Striker Removal And Installation 574
Striker Disassembly And Assembly 574
Striker (Adjusting) 574
Latch Removal And Installation (Earlier Models) 575
Latch Removal And Installation (Later Models) 576
FUEL TANK 577
Removal And Installation 577
Fuel Level Sender Removal And Installation 578
Fuel Fill Screen Removal And Installation 579
FUEL TANK (AUXILIARY) 581
Removal And Installation 581
CONTROL PEDALS AND LINKAGES (SCPA) 583
Description 583
Pedal Removal And Installation 583
Linkage Removal And Installation 584
Pedal (Adjusting) 585
Floor Pan Removal And Installation 586
CONTROL PANEL (SJC) 587
Description 587
Removal And Installation 587
CONTROL PANEL (SCPA) 589
Description 589
Removal And Installation 589
CONTROL HANDLE / LEVER (SJC) 591
Description 591
Joystick Testing 591
Joystick Removal And Installation 592
CONTROL HANDLE / LEVER (SCPA) 593
Description 593
Steering Handle Testing 593
Steering Handle Removal And Installation 594
ACCESS PANEL (INSIDE) 595
Removal And Installation (Left) 595
Removal And Installation (Right) 595
ACCESS PANEL (INSIDE) (SJC) 597
Removal And Installation (Left) 597
Removal And Installation (Right) 597
WINDOW (REAR) 599
Rear Window Identification 599
Removal (Rubber Cord) 599
Installation (Rubber Cord) 600
Removal And Installation (Latches) 602
Disassembly And Assembly (Latches) 602
WINDOW (TOP) 603
Removal And Installation 603
WINDOW (SIDE) 605
Removal And Installation 605
CAB DOOR 607
Description 607
Removal And Installation 607
Disassembly And Assembly 608
Aligning 609
Adjusting 610
Checking Operation 610
ARMREST 611
Description 611
Removal And Installation 612
Disassembly And Assembly 613
LEFT SIDE LOWER PANEL 617
Removal And Installation 617
Disassembly And Assembly 619
RIGHT SIDE LOWER PANEL 621
Removal And Installation 621
Disassembly And Assembly 622
HEADLINER 625
Removal And Installation 625
ELECTRICAL SYSTEM AND ANALYSIS 627
ELECTRICAL SCHEMATICS 633
ELECTRICAL SYSTEM INFORMATION 825
Glossary Of Electrical Symbols 825
Deluxe Cab Harness Connectors (Earlier Models) 828
Deluxe Cab Harness Connectors (Later Models) 829
Mainframe Harness Connectors (Earlier Models) 830
SJC Mainframe Harness Connectors (Later Models) 831
SCPA Mainframe Harness Connectors (Later Models) 832
Description 833
Troubleshooting 834
Fuse And Relay Location / Identification 835
Solenoid Testing 839
BATTERY 841
Battery Maintenance 841
Maintaining Battery Charge Level 841
Battery Service During Machine Storage 841
Battery Testing 842
Battery Charging 842
Removal And Installation 843
Using A Booster Battery (Jump Starting) 844
ALTERNATOR 845
Belt Adjustment 845
Belt Replacement 845
Charging System Inspection 846
Alternator Voltage Testing 847
Low Voltage Testing 847
High Voltage Testing 848
Removal And Installation 849
Parts Identification 850
STARTER 851
Testing 851
Removal And Installation 851
Parts Identification 852
INSTRUMENT PANELS 853
Left Panel (Earlier Models) 853
Left Panel (Later Models) 855
Display Screen 857
Right Panel (Standard Key Panel) 858
Right Panel (Keyless Start Panel) 859
Right Panel (Deluxe Instrumentation Panel) 860
Left Switch Panel 862
Right Switch Panel 862
Left Side Lower Panel 863
Right Side Lower Panel 863
Radio 864
Rear View Camera System 866
Left Panel Removal And Installation 868
Right Panel Removal And Installation 868
Key Switch Disassembly And Assembly 869
Alarm Disassembly And Assembly 869
Left Switch Panel Removal And Installation 870
Right Switch Panel Removal And Installation 870
LIGHTS 871
Front Removal And Installation 871
Rear Removal And Installation 872
Cab Light Removal And Installation (Earlier Models) 872
Cab Light Removal And Installation (Later Models) 873
BOBCAT CONTOLERS (GATEWAY AND AUXILLIARY) 875
Description 875
Connector Identification 876
Removal And Installation (Earlier Models) 882
Removal And Installation (Later Models) 883
BOBCAT CONTROLLER (ACS) 885
Description 885
Connector And Wire Identification 886
Removal And Installation 888
BOBCAT CONTROLLER (SJC) (DRIVE) 889
Description 889
Connector Identification (Earlier Models) 890
Removal And Installation (Earlier Models) 892
Connector Identification (Later Models) 894
Removal And Installation (Later Models) 897
BOBCAT CONTROLLER (SCPA) (DRIVE) 899
Description 899
Connector Identification (Earlier Models) 900
Removal And Installation (Earlier Models) 902
Connector Identification (Later Models) 904
Removal And Installation (Later Models) 907
SPEED SENSORS (SJC AND SCPA) 909
Description 909
Testing 909
Removal And Installation 911
DIAGNOSTIC SERVICE CODES 913
Viewing Service Codes 913
Service Codes List 914
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™) 921
Description 921
Inspecting The BICS™ (Engine STOPPED – Key ON) 922
Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED – Key ON) 922
Inspecting The Seat Bar Sensor (Engine RUNNING) 922
Inspecting The Traction Lock And Parking Brake (Engine RUNNING) 922
Inspecting The Lift Arm Bypass Control 922
Inspecting Deactivation Of Lift And Tilt Functions (SJC) 922
Troubleshooting 923
SEAT BAR SENSOR 925
Description 925
Troubleshooting 926
Testing 927
Removal And Installation 928
Bobcat Interlock Control System (BICS™) Circuit Test 931
TRACTION LOCK 933
Description 933
Troubleshooting 934
Inspecting 935
ELECTRICAL / HYDRAULIC CONTROLS (SJC) 937
Identification Chart 937
Description 938
Identification Chart ACD Group 0 939
Identification Chart ACD Group 1 940
Identification Chart ACD Group 2 941
Identification Chart ACD Group 3 942
ELECTRICAL / HYDRAULIC CONTROLS (SCPA) 943
Identification Chart 943
Description 944
Identification Chart ACD Group 0 945
Identification Chart ACD Group 1 946
Identification Chart ACD Group 2 947
Identification Chart ACD Group 3 948
SERVICE PC (LAPTOP COMPUTER) 949
Connecting Remote Start Tool 949
Connecting Remote Start Tool (Service Tool) 949
CALIBRATION 951
Description 951
Actuator Testing 951
Lift And Tilt Calibration (SJC) 954
Hydrostatic Pump Calibration (SJC) 955
Hydrostatic Pump Calibration (SCPA) 961
STEERING DRIFT COMPENSATION (OPERATOR MODE) 967
Description 967
Operation 967
STEERING DRIFT COMPENSATION (SERVICE MODE) 969
Description 969
Operation 969
FLYWHEEL RPM SENSOR 971
Description 971
Removal 971
Installation 972
CONTROL PANEL SETUP 973
Right Panel Setup (Deluxe Instrumentation Panel) 973
PASSWORD SETUP (DELUXE INSTRUMENTATION PANEL) 977
Password Description 977
Changing The Owner Password 977
Changing The User Passwords 978
Password Lockout Feature 978
PASSWORD SETUP (KEYLESS START PANEL) 979
Password Description 979
Changing The Owner Password 979
Password Lockout Feature 979
MAINTENANCE CLOCK 981
Description 981
Setup 982
Reset 985
BACK-UP ALARM SYSTEM 987
Description 987
Inspecting 987
Troubleshooting (Joystick) 988
Alarm Removal And Installation 989
FRONT HORN 991
Removal And Installation 991
Troubleshooting 992
Troubleshooting (Joystick) 993
BOBCAT MACHINE IQ WIRELESS COMMUNICATIONS 995
Description 995
Controller Removal And Installation 995
Procedure 997
ENGINE SERVICE 999
ENGINE INFORMATION 1003
Description 1003
Specifications 1004
Torque Values 1007
Troubleshooting 1007
Engine Removal And Installation 1009
Engine Mount Replacement 1016
Compression – Checking 1017
ENGINE SPEED CONTROL (HAND) 1019
Removal And Installation 1019
Disassembly And Assembly 1019
Cable Removal And Installation 1020
ENGINE SPEED CONTROL (FOOT) 1021
Removal And Installation (Earlier Models) 1021
Disassembly And Assembly (Earlier Models) 1022
Removal And Installation (Later Models) 1024
Disassembly And Assembly (Later Models) 1025
MUFFLER 1027
Removal And Installation 1027
AIR CLEANER 1029
Housing Removal And Installation (Earlier Models) 1029
Housing Removal And Installation (Later Models) 1029
ENGINE COOLING SYSTEM (EARLIER MODELS) 1031
Radiator Removal And Installation 1031
Hydraulic Fan Description 1033
Lower Fan Duct Removal And Installation 1034
Hydraulic Fan Motor Assembly Removal And Installation 1034
Fan Removal And Installation 1035
Hydraulic Fan Motor Removal And Installation 1035
Hydraulic Fan Disassembly And Assembly 1036
Blower Housing Removal And Installation 1038
Water Pump Removal And Installation 1039
Water Pump Disassembly And Assembly 1039
Thermostat Housing Removal And Installation 1040
Thermostat – Checking 1040
ENGINE COOLING SYSTEM (LATER MODELS) 1041
Radiator / Oil Cooler Removal And Installation 1041
Hydraulic Fan Description 1043
Hydraulic Reversing Fan Description 1043
Lower Fan Duct Removal And Installation 1044
Hydraulic Fan Motor Assembly Removal And Installation 1044
Hydraulic Fan Motor Removal And Installation 1046
Hydraulic Fan Motor Disassembly And Assembly 1048
Blower Housing Removal And Installation 1056
Water Pump Removal And Installation 1057
Water Pump Disassembly And Assembly 1057
Thermostat Housing Removal And Installation 1058
Thermostat – Checking 1058
LUBRICATION SYSTEM 1059
Oil Pan Removal And Installation 1059
Oil Pump Removal And Installation 1060
Oil Pump Inspection 1060
Oil Filter Cooler Removal And Installation 1062
Engine Oil Pressure – Testing 1063
FUEL SYSTEM 1065
Fuel Shutoff Solenoid – Checking 1065
Fuel Shutoff Solenoid Removal And Installation 1065
Fuel Injection Pump Assembly Removal 1066
Fuel Injection Pump Assembly Installation 1070
Governor Housing Disassembly And Assembly 1072
Governor Disassembly And Assembly 1074
Fuel Camshaft Removal And Installation 1076
Fuel Injection Pump Removal 1078
Fuel Injection Pump Installation 1081
Fuel Injection Pump – Timing 1084
Fuel Injector Removal And Installation 1088
Fuel Injector Nozzle Pressure – Checking 1089
Nozzle Spraying Condition 1090
Valve Seat Tightness 1090
CYLINDER HEAD 1091
Intake Air Heater – Testing 1091
Intake Air Heater Removal And Installation 1091
Valve Clearance Adjustment 1092
Valve Timing – Checking 1094
Cylinder Head Removal And Installation 1095
Cylinder Head Disassembly And Assembly 1097
Cylinder Head – Servicing 1098
Cylinder Head Top Clearance 1098
Valve Guide – Checking 1099
Reconditioning The Valve And Valve Seat 1101
Valve Spring 1103
Valve Tappets 1104
Rocker Arm And Shaft – Checking 1105
Push Rod Alignment – Checking 1105
CRANKSHAFT AND PISTONS 1107
Piston And Connecting Rod Removal And Installation 1107
Piston And Connecting Rod – Servicing 1109
Cylinder Bore – Checking 1113
Connecting Rod Alignment 1114
Crankshaft Gear Removal And Installation 1114
Crankshaft And Bearings Removal 1115
Crankshaft And Bearings Installation 1117
Crankshaft And Bearings – Servicing 1119
CAMSHAFT AND TIMING GEARS 1125
Timing Gearcase Cover Removal And Installation 1125
Timing Gears Backlash – Checking 1126
Idler Gear And Camshaft Removal And Installation 1126
Camshaft – Servicing 1127
Idler Gear And Shaft – Servicing 1129
TURBOCHARGER 1131
Description 1131
Testing 1131
Removal And Installation 1132
FLYWHEEL AND HOUSING 1135
Flywheel Removal And Installation 1135
Ring Gear Removal And Installation 1135
Housing Removal And Installation 1136
EXHAUST GAS RECIRCULATION (EGR) SYSTEM 1137
Description 1137
Testing 1138
Removal And Installation 1141
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1143
AIR CONDITIONING SYSTEM FLOW 1145
Description 1145
A/C System Diagram 1146
Components 1147
Safety Equipment 1151
REGULAR MAINTENANCE 1153
Filters 1153
Compressor Drive Belt Adjustment 1154
Compressor Drive Belt Replacement 1154
Condenser 1154
Air Conditioning Lubrication 1154
Air Conditioning Service Chart 1155
Evaporator / Heater Coil 1156
TROUBLESHOOTING 1159
Blower Motor Does Not Operate 1159
Blower Motor Operates Normally, But Air Flow Is Insufficient 1159
Insufficient Cooling Although Air Flow And Compressor Operation Are Normal 1159
The Compressor Does Not Operate At All, Or Operates Improperly 1159
Gauge Pressure Related Troubleshooting 1160
Troubleshooting Tree 1162
Temperature / Pressure Chart 1165
Poor A/C Performance 1166
HVAC Repair And Leaks 1167
Electrical System 1168
Engine Coolant Bypassing The Heater Valve 1174
Heater Valve Not Opening Or Closing 1175
SYSTEM CHARGING AND RECLAMATION 1177
Refrigerant Identification 1177
Reclamation And Charging With Recovery / Charging Unit 1178
COMPRESSOR 1181
Removal And Installation 1181
Oil 1183
Oil Check 1184
CONDENSER (EARLIER MODELS) 1185
Removal And Installation 1185
CONDENSER (LATER MODELS) 1187
Removal And Installation 1187
RECEIVER / DRIER (EARLIER MODELS) 1189
Receiver / Drier Removal And Installation 1189
Pressure Relief Valve Removal And Installation 1190
Pressure Switch Removal And Installation 1191
Schrader® Valve Removal And Installation 1192
RECEIVER / DRIER (LATER MODELS) 1193
Receiver / Drier Removal And Installation 1193
Pressure Switch Removal And Installation 1195
Schrader® Valve Removal And Installation 1196
EVAPORATOR / HEATER UNIT 1197
Removal And Installation 1197
THERMOSTAT 1199
Description 1199
Removal And Installation 1200
EXPANSION VALVE 1201
Removal And Installation 1201
EVAPORATOR COIL 1203
Removal And Installation 1203
HEATER COIL 1205
Removal And Installation 1205
BLOWER FAN 1207
Removal And Installation 1207
Disassembly And Assembly 1207
HEATER VALVE 1211
Removal And Installation 1211
EVAPORATOR / HEATER COVER 1213
Removal 1213
Installation 1213
SPECIFICATIONS 1215
(S850) LOADER SPECIFICATIONS 1217
Machine Dimensions 1217
Performance 1218
Engine 1218
Drive System 1219
Controls 1219
Hydraulic System 1220
Electrical System 1221
Capacities 1221
Tires 1221
TORQUE SPECIFICATIONS FOR BOLTS 1223
Torque For General SAE Bolts 1223
Torque For General Metric Bolts 1224
HYDRAULIC CONNECTION SPECIFICATIONS 1225
Straight Thread O-ring Fitting 1225
Flare Fitting 1226
Tubelines And Hoses 1226
HYDRAULIC / HYDROSTATIC FLUID SPECIFICATIONS 1227
Specifications 1227
CONVERSIONS 1229
Decimal And Millimeter Equivalent Chart 1229
U S To Metric Conversion Chart 1229
SERVICE TOOLS REQUIRED 1231
Remote Start Tools 1231
Hydraulic Tools 1232
Mainframe And Drive Tools 1235
Electrical Tools 1238
Engine Tools 1239
HVAC Tools 1244
ALPHABETICAL INDEX 1245

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