Bobcat T870 Compact Track Loader Service Manual 6987487 – PDF DOWNLOAD
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Bobcat T870 Compact Track Loader Service Manual 6987487 – PDF DOWNLOAD
S/N A3PG11001 & Above
S/N A3PH11001 & Above
Description
Bobcat T870 Compact Track Loader Service Manual 6987487 – PDF DOWNLOAD
FILE DETAILS:
Bobcat T870 Compact Track Loader Service Manual 6987487 – PDF DOWNLOAD
Language : English
Pages : 1224
Downloadable : Yes
File Type : PDF
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DESCRIPTION:
Bobcat T870 Compact Track Loader Service Manual 6987487 – PDF DOWNLOAD
S/N A3PG11001 & Above
S/N A3PH11001 & 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 T870 Compact Track Loader Service Manual 6987487 – 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................................................................. 32 Forestry Door And Window Kit Inspection And Maintenance...................................... 32 TRANSPORTING THE 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.................................................. 39 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................................................................... 67 Checking And Adding Fluid.................................................................... 67 Hydraulic / Hydrostatic Fluid Chart.......................................................... 67 Removing And Replacing Hydraulic Fluid....................................................... 68 Hydraulic / Hydrostatic Filter Identification................................................ 70 Removing And Replacing Hydraulic / Hydrostatic Filter (Earlier Models)....................... 71 Removing And Replacing Hydraulic / Hydrostatic Filter (Later Models)......................... 72 Removing And Replacing Hydraulic Charge Filter............................................... 73 Breather Cap................................................................................. 75 BOB-TACH (HAND LEVER)............................................................................ 77 Inspection And Maintenance................................................................... 77 BOB-TACH (POWER)................................................................................. 79 Inspection And Maintenance................................................................... 79 LUBRICATING THE LOADER........................................................................... 81 Lubrication Locations........................................................................ 81 SPARK ARRESTER MUFFLER........................................................................... 85 Cleaning Procedure........................................................................... 85 PIVOT PINS....................................................................................... 87 Inspection And Maintenance................................................................... 87 LOADER STORAGE AND RETURN TO SERVICE............................................................. 89 Storage...................................................................................... 89 Return To Service............................................................................ 89 STOPPING THE ENGINE AND LEAVING THE LOADER....................................................... 91 Procedure.................................................................................... 91 EMERGENCY EXIT................................................................................... 93 Rear Window Identification................................................................... 93 Rear Window Removal (Latches)................................................................ 93 Rear Window Removal (Rubber Cord)............................................................ 94 External Access (Rear Window With Latches)................................................... 94 External Access (Rear Window With Rubber Cord)............................................... 95 Front Door................................................................................... 95 SEAT BELT........................................................................................ 97 Inspection And Maintenance................................................................... 97 HYDRAULIC SYSTEM..................................................................................... 99 HYDRAULIC / HYDROSTATIC SCHEMATICS............................................................... 107 HYDRAULIC SYSTEM INFORMATION..................................................................... 119 Glossary Of Hydraulic / Hydrostatic Symbols.................................................. 119 Troubleshooting.............................................................................. 123 CYLINDER (LIFT).................................................................................. 125 Testing...................................................................................... 125 Removal And Installation..................................................................... 126 Parts Identification (Earlier Models)........................................................ 130 Parts Identification (Later Models).......................................................... 131 Disassembly.................................................................................. 132 Assembly..................................................................................... 134 CYLINDER (TILT).................................................................................. 137 Testing...................................................................................... 137 Removal And Installation..................................................................... 138 Base End Pivot Pin Removal And Installation.................................................. 140 Parts Identification (Earlier Models)........................................................ 141 Parts Identification (Later Models).......................................................... 142 Disassembly.................................................................................. 143 Assembly..................................................................................... 146 CYLINDER (BOB-TACH).............................................................................. 151 Testing...................................................................................... 151 Removal And Installation..................................................................... 152 Parts Identification......................................................................... 153 Disassembly.................................................................................. 154 Assembly..................................................................................... 155 MAIN RELIEF VALVE (S/N A3PG11001 - A3PG12799 AND S/N A3PH11001 - A3PH12325)...................... 159 Description.................................................................................. 159 Testing...................................................................................... 160 Adjusting.................................................................................... 162 Removal And Installation..................................................................... 162 MAIN RELIEF VALVE (S/N A3PG12800 & ABOVE AND S/N A3PH12326 & ABOVE).............................. 165 Description.................................................................................. 165 Testing...................................................................................... 165 Main Relief Valve Adjustment................................................................. 168 Main Relief Valve Removal And Installation................................................... 168 Auxiliary Relief Valve Adjustment............................................................ 169 Auxiliary Relief Valve Removal And Installation.............................................. 170 HYDRAULIC CONTROL VALVE (SJC) (S/N A3PG11001 - A3PG12799 AND S/N A3PH11001 - A3PH12325).......... 171 Description.................................................................................. 171 Removal And Installation..................................................................... 172 Actuator Removal And Installation (In Loader)................................................ 176 Actuator Removal And Installation (Out Of Loader)............................................ 178 Identification Chart......................................................................... 181 Mount Bracket Removal And Installation....................................................... 182 Lift Load Check Valve Removal And Installation............................................... 182 Load Check Valve Removal And Installation (Tilt And Auxiliary)............................... 183 Anti-Cavitation Valve Removal And Installation (Lift, Rod End)............................... 184 Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End)................ 184 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End)................ 185 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End)................. 185 Port Relief Valve Removal And Installation................................................... 186 Plug Removal And Installation................................................................ 187 End Cap Block Removal And Installation....................................................... 188 Lift Spool Removal And Installation.......................................................... 188 Lift Spool Disassembly And Assembly.......................................................... 190 Tilt Spool Removal And Installation.......................................................... 192 Auxiliary Spool Removal And Installation..................................................... 194 Auxiliary Solenoid Removal And Installation.................................................. 195 Solenoid Removal And Installation............................................................ 196 Lock Valve Removal And Installation.......................................................... 197 Lift Arm Bypass Orifice Removal And Installation............................................. 198 Main Relief Valve Removal And Installation................................................... 198 Check Valve Removal And Installation......................................................... 199 HYDRAULIC CONTROL VALVE (SJC) (S/N A3PG12800 & ABOVE AND S/N A3PH12326 & ABOVE).................. 201 Description.................................................................................. 201 Removal And Installation..................................................................... 202 Actuator Removal And Installation (In Loader)................................................ 206 Actuator Removal And Installation (Out Of Loader)............................................ 207 Identification Chart......................................................................... 210 Mount Bracket Removal And Installation....................................................... 211 Lift Load Check Valve Removal And Installation............................................... 211 Load Check Valve Removal And Installation (Tilt And Auxiliary)............................... 212 Anti-Cavitation Valve Removal And Installation (Lift, Rod End)............................... 213 Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End)................ 213 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End)................ 214 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End)................. 214 Port Relief Valve Removal And Installation................................................... 215 Plug Removal And Installation................................................................ 217 End Cap Block Removal And Installation....................................................... 218 Lift Spool Removal And Installation.......................................................... 218 Lift Spool Disassembly And Assembly.......................................................... 220 Tilt Spool Removal And Installation.......................................................... 221 Auxiliary Spool Removal And Installation..................................................... 223 Auxiliary Solenoid Removal And Installation.................................................. 224 Solenoid Removal And Installation............................................................ 225 Lock Valve Removal And Installation.......................................................... 226 Lift Arm Bypass Orifice Removal And Installation............................................. 228 Main Relief Valve Removal And Installation................................................... 228 Auxiliary Relief Valve Removal And Installation.............................................. 229 Check Valve Removal And Installation......................................................... 229 HYDRAULIC CONTROL VALVE (SCPA) (S/N A3PG11001 - A3PG12799 AND S/N A3PH11001 - A3PH12325)......... 231 Description.................................................................................. 231 Removal And Installation..................................................................... 232 Mount Bracket Removal And Installation....................................................... 236 Identification Chart......................................................................... 237 Lift Load Check Valve Removal And Installation............................................... 238 Load Check Valve Removal And Installation (Tilt And Auxiliary)............................... 239 Anti-Cavitation Valve Removal And Installation (Lift, Rod End)............................... 240 Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End)................ 240 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End)................ 241 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End)................. 241 Port Relief Valve Removal And Installation................................................... 242 Plug Removal And Installation................................................................ 243 Rubber Boot Removal And Installation......................................................... 244 End Cap Block Removal And Installation....................................................... 245 Lift Spool And Detent Removal And Installation............................................... 246 Tilt Spool Removal And Installation.......................................................... 256 Auxiliary Spool Removal And Installation..................................................... 258 Auxiliary Solenoid Removal And Installation.................................................. 260 Solenoid Removal And Installation............................................................ 261 Lock Valve Removal And Installation.......................................................... 262 Lift Arm Bypass Orifice Removal And Installation............................................. 264 Main Relief Valve Removal And Installation................................................... 264 Check Valve Removal And Installation......................................................... 265 HYDRAULIC CONTROL VALVE (SCPA) (S/N A3PG12800 & ABOVE AND S/N A3PH12326 & ABOVE)................. 267 Description.................................................................................. 267 Removal And Installation..................................................................... 268 Mount Bracket Removal And Installation....................................................... 271 Identification Chart......................................................................... 272 Lift Load Check Valve Removal And Installation............................................... 273 Load Check Valve Removal And Installation (Tilt And Auxiliary)............................... 274 Anti-Cavitation Valve Removal And Installation (Lift, Rod End)............................... 275 Port Relief / Anti-Cavitation Valve Removal And Installation (Lift, Base End)................ 275 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Base End)................ 276 Port Relief / Anti-Cavitation Valve Removal And Installation (Tilt, Rod End)................. 276 Port Relief Valve Removal And Installation................................................... 277 Plug Removal And Installation................................................................ 279 Rubber Boot Removal And Installation......................................................... 280 End Cap Block Removal And Installation....................................................... 280 Lift Spool And Detent Removal And Installation............................................... 281 Tilt Spool Removal And Installation.......................................................... 289 Auxiliary Spool Removal And Installation..................................................... 291 Auxiliary Solenoid Removal And Installation.................................................. 292 Solenoid Removal And Installation............................................................ 292 Lock Valve Removal And Installation.......................................................... 294 Lift Arm Bypass Orifice Removal And Installation............................................. 296 Main Relief Valve Removal And Installation................................................... 296 Auxiliary Relief Valve Removal And Installation.............................................. 297 Check Valve Removal And Installation......................................................... 297 LIFT ARM BYPASS CONTROL VALVE.................................................................... 299 Description.................................................................................. 299 Testing...................................................................................... 299 Removal And Installation..................................................................... 300 Bracket Removal And Installation............................................................. 301 Disassembly And Assembly..................................................................... 301 HYDRAULIC PUMP................................................................................... 303 Description.................................................................................. 303 Pump Test At Quick Couplers.................................................................. 303 Direct Pump Test (Standard Section).......................................................... 304 Direct Pump Test (Charge Section)............................................................ 306 Removal And Installation..................................................................... 308 Hydraulic Pump Startup....................................................................... 311 Parts Identification......................................................................... 312 Disassembly And Assembly..................................................................... 313 HYDRAULIC PUMP (HIGH FLOW)....................................................................... 315 Description.................................................................................. 315 Pump Test At Quick Couplers.................................................................. 315 Direct Pump Test (Standard Section).......................................................... 316 Direct Pump Test (Charge Section)............................................................ 317 Direct Pump Test (High Flow Section)......................................................... 319 High Flow Relief Valve Adjustment............................................................ 321 High Flow Relief Valve Removal And Installation.............................................. 322 Solenoid Removal And Installation............................................................ 323 Removal And Installation..................................................................... 324 Hydraulic Pump Startup....................................................................... 327 Parts Identification......................................................................... 328 Disassembly And Assembly..................................................................... 329 HYDRAULIC / HYDROSTATIC FILTERS (EARLIER MODELS)................................................. 331 Description.................................................................................. 331 Housing Removal And Installation............................................................. 331 HYDRAULIC / HYDROSTATIC FILTERS (LATER MODELS)................................................... 333 Description.................................................................................. 333 Housing Removal And Installation............................................................. 333 HYDRAULIC FLUID RESERVOIR (EARLIER MODELS)....................................................... 335 Description.................................................................................. 335 Removal And Installation..................................................................... 335 Hydraulic Fluid Screen....................................................................... 336 HYDRAULIC FLUID RESERVOIR (LATER MODELS)......................................................... 337 Description.................................................................................. 337 Removal And Installation..................................................................... 337 Hydraulic Fluid Screen....................................................................... 338 OIL COOLER (EARLIER MODELS)...................................................................... 339 Description.................................................................................. 339 Removal And Installation..................................................................... 339 OIL COOLER (LATER MODELS)........................................................................ 341 Removal And Installation..................................................................... 341 BUCKET POSITION VALVE............................................................................ 343 Description.................................................................................. 343 Solenoid Removal And Installation............................................................ 343 Solenoid Testing............................................................................. 344 Removal And Installation..................................................................... 345 Disassembly And Assembly..................................................................... 347 REAR AUXILIARY DIVERTER VALVE.................................................................... 349 Description.................................................................................. 349 Solenoid Testing............................................................................. 349 Removal And Installation..................................................................... 350 Disassembly And Assembly..................................................................... 351 BOB-TACH (POWER) BLOCK (EARLIER MODELS).......................................................... 357 Description.................................................................................. 357 Removal And Installation..................................................................... 357 Disassembly And Assembly..................................................................... 359 BOB-TACH (POWER) BLOCK (LATER MODELS)............................................................ 369 Description.................................................................................. 369 Testing Relief Valve......................................................................... 370 Removal And Installation..................................................................... 371 Disassembly And Assembly..................................................................... 373 FRONT AUXILIARY HYDRAULIC COUPLER BLOCK.......................................................... 379 Description.................................................................................. 379 Removal And Installation..................................................................... 380 Disassembly And Assembly (FFI/FI)............................................................ 380 Disassembly And Assembly (FFH/FH)............................................................ 382 AUTOMATIC RIDE CONTROL........................................................................... 385 Description.................................................................................. 385 Removal And Installation..................................................................... 386 Checking The Pressure In The Accumulator..................................................... 389 Adding Nitrogen To The Accumulator........................................................... 391 HYDROSTATIC SYSTEM................................................................................... 393 HYDROSTATIC SYSTEM INFORMATION................................................................... 395 Description.................................................................................. 395 Troubleshooting.............................................................................. 396 HYDROSTATIC DRIVE MOTOR.......................................................................... 397 Description.................................................................................. 397 Removing And Replacing Oil................................................................... 397 Removal And Installation..................................................................... 398 Parts Identification......................................................................... 400 Disassembly And Assembly..................................................................... 402 HYDROSTATIC DRIVE MOTOR (TWO-SPEED) (S/N A3PG11001 - A3PG12799 AND S/N A3PH11001 - A3PH12325).... 415 Description.................................................................................. 415 Removing And Replacing Oil................................................................... 415 Removal And Installation..................................................................... 416 Parts Identification......................................................................... 418 Disassembly And Assembly..................................................................... 420 HYDROSTATIC DRIVE MOTOR (TWO-SPEED) (S/N A3PG12800 & ABOVE AND S/N A3PH12326 & ABOVE)............ 433 Description.................................................................................. 433 Removing And Replacing Oil................................................................... 433 Removal And Installation..................................................................... 434 Parts Identification......................................................................... 436 Disassembly And Assembly..................................................................... 438 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.................................................... 498 TWO-SPEED / BRAKE VALVE (S/N A3PG11001 - A3PG12799 AND S/N A3PH11001 - A3PH12325)................ 501 Description.................................................................................. 501 Valve Block Removal And Installation......................................................... 502 Valve Block Disassembly And Assembly......................................................... 504 TWO-SPEED / BRAKE VALVE (S/N A3PG12800 & ABOVE AND S/N A3PH12326 & 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............................................................................................ 517 Description.................................................................................. 517 Block Removal And Installation............................................................... 517 Block Disassembly And Assembly............................................................... 519 TRACK UNDERCARRIAGE COMPONENTS (ROLLER SUSPENSION)............................................... 521 Description.................................................................................. 521 Checking Tension............................................................................. 523 Adjusting Tension (Earlier Models With Two Track Tension Fittings)........................... 524 Adjusting Tension (Later Models With One Track Tension Fitting).............................. 525 Track Removal And Installation............................................................... 527 Idler (Front) Removal And Installation....................................................... 529 Track Tensioner Disassembly And Assembly..................................................... 532 Idler (Rear) Removal And Installation........................................................ 534 Roller Removal And Installation.............................................................. 534 Leaf Spring Removal And Installation......................................................... 535 Sprocket Removal And Installation (Single Speed)............................................. 536 Sprocket Removal And Installation (Two-Speed)................................................ 536 Track Housing Removal And Installation....................................................... 537 TRACK MAINTENANCE................................................................................ 539 Track Damage Identification.................................................................. 539 MAINFRAME............................................................................................ 551 SEAT BAR......................................................................................... 555 Description.................................................................................. 555 Removal And Installation..................................................................... 555 Disassembly And Assembly..................................................................... 556 Compression Spring Disassembly And Assembly.................................................. 557 OPERATOR CAB..................................................................................... 559 Gas Spring Removal And Installation.......................................................... 559 Gas Spring Bracket Disassembly And Assembly.................................................. 560 Removal And Installation..................................................................... 560 OPERATOR SEAT (SUSPENSION)....................................................................... 563 Removal And Installation..................................................................... 563 Slide Rail Removal And Installation.......................................................... 563 Seat Belt Removal And Installation........................................................... 564 Lower Cushion Removal........................................................................ 564 Lower Cushion Installation................................................................... 565 Back Cushion Removal And Installation........................................................ 565 Shock Removal And Installation............................................................... 566 3-Point Seat Belt Removal And Installation................................................... 566 BOB-TACH (HAND LEVER)............................................................................ 569 Description.................................................................................. 569 Removal And Installation..................................................................... 569 Lever And Wedge Disassembly And Assembly..................................................... 571 Pivot Pin Bushing And Seal Removal And Installation.......................................... 573 BOB-TACH (POWER)................................................................................. 575 Description.................................................................................. 575 Removal And Installation..................................................................... 575 Lever And Wedge Disassembly And Assembly..................................................... 578 Pivot Pin Bushing And Seal Removal And Installation.......................................... 580 LIFT ARMS........................................................................................ 581 Stabilizer Bar Removal And Installation...................................................... 581 Link Removal And Installation................................................................ 582 Removal And Installation..................................................................... 583 REAR GRILLE...................................................................................... 587 Removing..................................................................................... 587 Installing................................................................................... 587 Shield Removal And Installation.............................................................. 588 REAR DOOR (TAILGATE)............................................................................. 589 Removal And Installation..................................................................... 589 Striker Removal And Installation............................................................. 590 Striker Disassembly And Assembly............................................................. 590 Striker (Adjusting).......................................................................... 590 Latch Removal And Installation (Earlier Models).............................................. 591 Latch Removal And Installation (Later Models)................................................ 592 FUEL TANK........................................................................................ 593 Removal And Installation..................................................................... 593 Fuel Level Sender Removal And Installation................................................... 594 Fuel Fill Screen Removal And Installation.................................................... 595 FUEL TANK (AUXILIARY)............................................................................ 597 Removal And Installation..................................................................... 597 CONTROL PEDALS AND LINKAGES (SCPA)............................................................... 599 Description.................................................................................. 599 Pedal Removal And Installation............................................................... 599 Linkage Removal And Installation............................................................. 600 Pedal (Adjusting)............................................................................ 601 Floor Pan Removal And Installation........................................................... 602 CONTROL PANEL (SJC).............................................................................. 603 Description.................................................................................. 603 Removal And Installation..................................................................... 603 CONTROL PANEL (SCPA)............................................................................. 605 Description.................................................................................. 605 Removal And Installation..................................................................... 605 CONTROL HANDLE / LEVER (SJC)..................................................................... 607 Description.................................................................................. 607 Joystick Testing............................................................................. 607 Joystick Removal And Installation............................................................ 608 CONTROL HANDLE / LEVER (SCPA).................................................................... 609 Description.................................................................................. 609 Steering Handle Testing...................................................................... 609 Steering Handle Removal And Installation..................................................... 610 ACCESS PANEL (INSIDE)............................................................................ 611 Removal And Installation (Left).............................................................. 611 Removal And Installation (Right)............................................................. 611 ACCESS PANEL (INSIDE) (SJC)...................................................................... 613 Removal And Installation (Left).............................................................. 613 Removal And Installation (Right)............................................................. 613 WINDOW (REAR).................................................................................... 615 Rear Window Identification................................................................... 615 Removal (Rubber Cord)........................................................................ 615 Installation (Rubber Cord)................................................................... 616 Removal And Installation (Latches)........................................................... 618 Disassembly And Assembly (Latches)........................................................... 618 WINDOW (TOP)..................................................................................... 619 Removal And Installation..................................................................... 619 WINDOW (SIDE).................................................................................... 621 Removal And Installation..................................................................... 621 CAB DOOR......................................................................................... 623 Description.................................................................................. 623 Removal And Installation..................................................................... 623 Disassembly And Assembly..................................................................... 624 Aligning..................................................................................... 625 Adjusting.................................................................................... 626 Checking Operation........................................................................... 626 ARMREST.......................................................................................... 627 Description.................................................................................. 627 Removal And Installation..................................................................... 628 Disassembly And Assembly..................................................................... 629 LEFT SIDE LOWER PANEL............................................................................ 633 Removal And Installation..................................................................... 633 Disassembly And Assembly..................................................................... 635 RIGHT SIDE LOWER PANEL........................................................................... 637 Removal And Installation..................................................................... 637 Disassembly And Assembly..................................................................... 638 HEADLINER........................................................................................ 641 Removal And Installation..................................................................... 641 ELECTRICAL SYSTEM AND ANALYSIS....................................................................... 643 ELECTRICAL SCHEMATICS............................................................................ 649 ELECTRICAL SYSTEM INFORMATION.................................................................... 811 Glossary Of Electrical Symbols............................................................... 811 Deluxe Cab Harness Connectors (Earlier Models)............................................... 814 Deluxe Cab Harness Connectors (Later Models)................................................. 815 Mainframe Harness Connectors (Earlier Models)................................................ 816 SJC Mainframe Harness Connectors (Later Models).............................................. 817 SCPA Mainframe Harness Connectors (Later Models)............................................. 818 Description.................................................................................. 819 Troubleshooting.............................................................................. 820 Fuse And Relay Location / Identification..................................................... 821 Solenoid Testing............................................................................. 825 BATTERY.......................................................................................... 827 Removal And Installation..................................................................... 827 Servicing.................................................................................... 828 Using A Booster Battery (Jump Starting)...................................................... 829 ALTERNATOR....................................................................................... 831 Belt Adjustment.............................................................................. 831 Belt Replacement............................................................................. 831 Charging System Inspection................................................................... 832 Alternator Voltage Testing................................................................... 833 Low Voltage Testing.......................................................................... 833 High Voltage Testing......................................................................... 834 Removal And Installation..................................................................... 835 Parts Identification......................................................................... 836 STARTER.......................................................................................... 837 Testing...................................................................................... 837 Removal And Installation..................................................................... 837 Parts Identification......................................................................... 838 INSTRUMENT PANELS................................................................................ 839 Left Panel (Earlier Models).................................................................. 839 Left Panel (Later Models).................................................................... 841 Display Screen............................................................................... 843 Right Panel (Standard Key Panel)............................................................. 844 Right Panel (Keyless Start Panel)............................................................ 845 Right Panel (Deluxe Instrumentation Panel)................................................... 846 Left Switch Panel............................................................................ 848 Right Switch Panel........................................................................... 848 Left Side Lower Panel........................................................................ 849 Right Side Lower Panel....................................................................... 849 Left Panel Removal And Installation.......................................................... 850 Right Panel Removal And Installation......................................................... 850 Key Switch Disassembly And Assembly.......................................................... 851 Alarm Disassembly And Assembly............................................................... 851 Left Switch Panel Removal And Installation................................................... 852 Right Switch Panel Removal And Installation.................................................. 852 LIGHTS........................................................................................... 853 Front Removal And Installation............................................................... 853 Rear Removal And Installation................................................................ 854 Cab Light Removal And Installation (Earlier Models).......................................... 854 Cab Light Removal And Installation (Later Models)............................................ 855 BOBCAT CONTOLERS (GATEWAY AND AUXILLIARY)........................................................ 857 Description.................................................................................. 857 Connector Identification..................................................................... 858 Removal And Installation (Earlier Models).................................................... 864 Removal And Installation (Later Models)...................................................... 865 BOBCAT CONTROLLER (ACS).......................................................................... 867 Description.................................................................................. 867 Connector And Wire Identification............................................................ 868 Removal And Installation..................................................................... 870 BOBCAT CONTROLLER (SJC) (DRIVE).................................................................. 871 Description.................................................................................. 871 Connector Identification (Earlier Models).................................................... 872 Removal And Installation (Earlier Models).................................................... 874 Connector Identification (Later Models)...................................................... 876 Removal And Installation (Later Models)...................................................... 879 BOBCAT CONTROLLER (SCPA) (DRIVE)................................................................. 881 Description.................................................................................. 881 Connector Identification (Earlier Models).................................................... 882 Removal And Installation (Earlier Models).................................................... 884 Connector Identification (Later Models)...................................................... 886 Removal And Installation (Later Models)...................................................... 889 SPEED SENSORS (SJC AND SCPA)..................................................................... 891 Description.................................................................................. 891 Testing...................................................................................... 891 Removal And Installation..................................................................... 892 DIAGNOSTIC SERVICE CODES......................................................................... 895 Viewing Service Codes........................................................................ 895 Service Codes List........................................................................... 896 BOBCAT INTERLOCK CONTROL SYSTEM (BICS™).......................................................... 903 Description.................................................................................. 903 Inspecting The BICS™ (Engine STOPPED - Key ON)............................................... 904 Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED - Key ON)......... 904 Inspecting The Seat Bar Sensor (Engine RUNNING).............................................. 904 Inspecting The Traction Lock And Parking Brake (Engine RUNNING).............................. 904 Inspecting The Lift Arm Bypass Control....................................................... 904 Inspecting Deactivation Of Lift And Tilt Functions (SJC)..................................... 904 Troubleshooting.............................................................................. 905 SEAT BAR SENSOR.................................................................................. 907 Description.................................................................................. 907 Troubleshooting.............................................................................. 907 Testing...................................................................................... 908 Removal And Installation..................................................................... 909 Bobcat Interlock Control System (BICS™) Circuit Test......................................... 912 TRACTION LOCK.................................................................................... 915 Description.................................................................................. 915 Troubleshooting.............................................................................. 916 Inspecting................................................................................... 917 ELECTRICAL / HYDRAULIC CONTROLS (SJC)............................................................ 919 Identification Chart......................................................................... 919 Description.................................................................................. 920 Identification Chart ACD Group 0............................................................. 921 Identification Chart ACD Group 1............................................................. 922 Identification Chart ACD Group 2............................................................. 923 Identification Chart ACD Group 3............................................................. 924 ELECTRICAL / HYDRAULIC CONTROLS (SCPA)........................................................... 925 Identification Chart......................................................................... 925 Description.................................................................................. 926 Identification Chart ACD Group 0............................................................. 927 Identification Chart ACD Group 1............................................................. 928 Identification Chart ACD Group 2............................................................. 929 Identification Chart ACD Group 3............................................................. 930 SERVICE PC (LAPTOP COMPUTER)..................................................................... 931 Connecting Remote Start Tool................................................................. 931 Connecting Remote Start Tool (Service Tool).................................................. 931 CALIBRATION...................................................................................... 933 Description.................................................................................. 933 Actuator Testing............................................................................. 933 Lift And Tilt Calibration (SJC).............................................................. 936 Hydrostatic Pump Calibration (SJC)........................................................... 937 Hydrostatic Pump Calibration (SCPA).......................................................... 943 STEERING DRIFT COMPENSATION (OPERATOR MODE)...................................................... 949 Description.................................................................................. 949 Operation.................................................................................... 949 STEERING DRIFT COMPENSATION (SERVICE MODE)....................................................... 951 Description.................................................................................. 951 Operation.................................................................................... 951 FLYWHEEL RPM SENSOR.............................................................................. 953 Description.................................................................................. 953 Removal...................................................................................... 953 Installation................................................................................. 954 CONTROL PANEL SETUP.............................................................................. 955 Right Panel Setup (Deluxe Instrumentation Panel)............................................. 955 PASSWORD SETUP (DELUXE INSTRUMENTATION PANEL).................................................... 959 Password Description......................................................................... 959 Changing The Owner Password.................................................................. 959 Changing The User Passwords.................................................................. 960 Password Lockout Feature..................................................................... 960 PASSWORD SETUP (KEYLESS START PANEL)............................................................. 961 Password Description......................................................................... 961 Changing The Owner Password.................................................................. 961 Password Lockout Feature..................................................................... 961 MAINTENANCE CLOCK................................................................................ 963 Description.................................................................................. 963 Setup........................................................................................ 964 Reset........................................................................................ 967 BACK-UP ALARM SYSTEM............................................................................. 969 Description.................................................................................. 969 Inspecting................................................................................... 969 Troubleshooting (Joystick)................................................................... 970 Alarm Removal And Installation............................................................... 971 FRONT HORN....................................................................................... 973 Removal And Installation..................................................................... 973 Troubleshooting.............................................................................. 974 Troubleshooting (Joystick)................................................................... 975 ENGINE SERVICE....................................................................................... 977 ENGINE INFORMATION............................................................................... 981 Description.................................................................................. 981 Specifications............................................................................... 982 Torque Values................................................................................ 985 Troubleshooting.............................................................................. 985 Engine Removal And Installation.............................................................. 987 Engine Mount Replacement..................................................................... 994 Compression - Checking....................................................................... 995 ENGINE SPEED CONTROL (HAND)...................................................................... 997 Removal And Installation..................................................................... 997 Disassembly And Assembly..................................................................... 997 Cable Removal And Installation............................................................... 998 ENGINE SPEED CONTROL (FOOT)...................................................................... 999 Removal And Installation (Earlier Models).................................................... 999 Disassembly And Assembly (Earlier Models)....................................................1000 Removal And Installation (Later Models)......................................................1002 Disassembly And Assembly (Later Models)......................................................1003 MUFFLER..........................................................................................1005 Removal And Installation.....................................................................1005 AIR CLEANER......................................................................................1007 Housing Removal And Installation (Earlier Models)............................................1007 Housing Removal And Installation (Later Models)..............................................1007 ENGINE COOLING SYSTEM (EARLIER MODELS)...........................................................1009 Radiator Removal And Installation............................................................1009 Hydraulic Fan Description....................................................................1011 Lower Fan Duct Removal And Installation......................................................1012 Hydraulic Fan Motor Assembly Removal And Installation........................................1012 Fan Removal And Installation.................................................................1013 Hydraulic Fan Motor Removal And Installation.................................................1013 Hydraulic Fan Disassembly And Assembly.......................................................1014 Blower Housing Removal And Installation......................................................1016 Water Pump Removal And Installation..........................................................1017 Water Pump Disassembly And Assembly..........................................................1017 Thermostat Housing Removal And Installation..................................................1018 Thermostat - Checking........................................................................1018 ENGINE COOLING SYSTEM (LATER MODELS).............................................................1019 Radiator / Oil Cooler Removal And Installation...............................................1019 Hydraulic Fan Description....................................................................1021 Hydraulic Reversing Fan Description..........................................................1021 Lower Fan Duct Removal And Installation......................................................1021 Hydraulic Fan Motor Assembly Removal And Installation........................................1022 Hydraulic Fan Motor Removal And Installation.................................................1024 Hydraulic Fan Motor Disassembly And Assembly.................................................1025 Blower Housing Removal And Installation......................................................1033 Water Pump Removal And Installation..........................................................1034 Water Pump Disassembly And Assembly..........................................................1034 Thermostat Housing Removal And Installation..................................................1035 Thermostat - Checking........................................................................1035 LUBRICATION SYSTEM...............................................................................1037 Oil Pan Removal And Installation.............................................................1037 Oil Pump Removal And Installation............................................................1038 Oil Pump Inspection..........................................................................1038 Oil Filter Cooler Removal And Installation...................................................1040 Engine Oil Pressure - Testing................................................................1041 FUEL SYSTEM......................................................................................1043 Fuel Shutoff Solenoid - Checking.............................................................1043 Fuel Shutoff Solenoid Removal And Installation...............................................1043 Fuel Injection Pump Assembly Removal.........................................................1044 Fuel Injection Pump Assembly Installation....................................................1048 Governor Housing Disassembly And Assembly....................................................1050 Governor Disassembly And Assembly............................................................1052 Fuel Camshaft Removal And Installation.......................................................1054 Fuel Injection Pump Removal..................................................................1056 Fuel Injection Pump Installation.............................................................1059 Injection Pump - Timing......................................................................1062 Fuel Injector Removal And Installation.......................................................1066 Fuel Injector Nozzle Pressure - Checking.....................................................1067 Nozzle Spraying Condition....................................................................1068 Valve Seat Tightness.........................................................................1068 CYLINDER HEAD....................................................................................1069 Intake Air Heater - Testing..................................................................1069 Intake Air Heater Removal And Installation...................................................1069 Valve Clearance Adjustment...................................................................1070 Valve Timing - Checking......................................................................1072 Cylinder Head Removal And Installation.......................................................1073 Cylinder Head Disassembly And Assembly.......................................................1075 Cylinder Head - Servicing....................................................................1076 Cylinder Head Top Clearance..................................................................1076 Valve Guide - Checking.......................................................................1077 Reconditioning The Valve And Valve Seat......................................................1079 Valve Spring.................................................................................1081 Valve Tappets................................................................................1082 Rocker Arm And Shaft - Checking..............................................................1083 Push Rod Alignment - Checking................................................................1083 CRANKSHAFT AND PISTONS...........................................................................1085 Piston And Connecting Rod Removal And Installation...........................................1085 Piston And Connecting Rod - Servicing........................................................1087 Cylinder Bore - Checking.....................................................................1091 Connecting Rod Alignment.....................................................................1092 Crankshaft Gear Removal And Installation.....................................................1092 Crankshaft And Bearings Removal..............................................................1093 Crankshaft And Bearings Installation.........................................................1095 Crankshaft And Bearings - Servicing..........................................................1097 CAMSHAFT AND TIMING GEARS........................................................................1103 Timing Gearcase Cover Removal And Installation...............................................1103 Timing Gears Backlash - Checking.............................................................1104 Idler Gear And Camshaft Removal And Installation.............................................1104 Camshaft - Servicing.........................................................................1105 Idler Gear And Shaft - Servicing.............................................................1107 TURBOCHARGER.....................................................................................1109 Description..................................................................................1109 Testing......................................................................................1109 Removal And Installation.....................................................................1110 FLYWHEEL AND HOUSING.............................................................................1113 Flywheel Removal And Installation............................................................1113 Ring Gear Removal And Installation...........................................................1113 Housing Removal And Installation.............................................................1114 EXHAUST GAS RECIRCULATION (EGR) SYSTEM...........................................................1115 Description..................................................................................1115 Testing......................................................................................1116 Removal And Installation.....................................................................1119 HEATING, VENTILATION AND AIR CONDITIONING (HVAC).....................................................1121 AIR CONDITIONING SYSTEM FLOW.....................................................................1123 Description..................................................................................1123 AC System Diagram............................................................................1124 Components...................................................................................1125 Safety Equipment.............................................................................1129 REGULAR MAINTENANCE..............................................................................1131 Filters......................................................................................1131 Compressor Drive Belt Adjustment.............................................................1132 Compressor Drive Belt Replacement............................................................1132 Condenser....................................................................................1132 Air Conditioning Lubrication.................................................................1132 Air Conditioning Service Chart...............................................................1133 Evaporator / Heater Coil.....................................................................1134 TROUBLESHOOTING..................................................................................1137 Blower Motor Does Not Operate................................................................1137 Blower Motor Operates Normally, But Air Flow Is Insufficient.................................1137 Insufficient Cooling Although Air Flow And Compressor Operation Are Normal...................1137 The Compressor Does Not Operate At All, Or Operates Improperly...............................1137 Gauge Pressure Related Troubleshooting.......................................................1138 Troubleshooting Tree.........................................................................1140 Temperature / Pressure Chart.................................................................1143 Poor A/C Performance.........................................................................1144 HVAC Repair And Leaks........................................................................1145 Electrical System............................................................................1146 Engine Coolant Bypassing The Heater Valve....................................................1152 Heater Valve Not Opening Or Closing..........................................................1153 SYSTEM CHARGING AND RECLAMATION..................................................................1155 Refrigerant Identification...................................................................1155 Reclamation And Charging With Recovery / Charging Unit.......................................1156 COMPRESSOR.......................................................................................1159 Removal And Installation.....................................................................1159 Oil..........................................................................................1161 Oil Check....................................................................................1162 CONDENSER (EARLIER MODELS).......................................................................1163 Removal And Installation.....................................................................1163 CONDENSER (LATER MODELS).........................................................................1165 Removal And Installation.....................................................................1165 RECEIVER / DRIER (EARLIER MODELS)................................................................1167 Receiver / Drier Removal And Installation....................................................1167 Pressure Relief Valve Removal And Installation...............................................1168 Pressure Switch Removal And Installation.....................................................1169 Schrader® Valve Removal And Installation.....................................................1170 RECEIVER / DRIER (LATER MODELS)..................................................................1171 Receiver / Drier Removal And Installation....................................................1171 Pressure Switch Removal And Installation.....................................................1173 Schrader® Valve Removal And Installation.....................................................1174 EVAPORATOR / HEATER UNIT.........................................................................1175 Removal And Installation.....................................................................1175 THERMOSTAT.......................................................................................1177 Description..................................................................................1177 Removal And Installation.....................................................................1178 EXPANSION VALVE..................................................................................1179 Removal And Installation.....................................................................1179 EVAPORATOR COIL..................................................................................1181 Removal And Installation.....................................................................1181 HEATER COIL......................................................................................1183 Removal And Installation.....................................................................1183 BLOWER FAN.......................................................................................1185 Removal And Installation.....................................................................1185 Disassembly And Assembly.....................................................................1185 HEATER VALVE.....................................................................................1189 Removal And Installation.....................................................................1189 EVAPORATOR / HEATER COVER........................................................................1191 Removal......................................................................................1191 Installation.................................................................................1191 SPECIFICATIONS.......................................................................................1193 (T870) LOADER SPECIFICATIONS.....................................................................1195 Machine Dimensions...........................................................................1195 Performance..................................................................................1196 Engine.......................................................................................1196 Drive System.................................................................................1196 Controls.....................................................................................1197 Hydraulic System.............................................................................1197 Electrical System............................................................................1198 Capacities...................................................................................1198 Tracks.......................................................................................1198 Ground Pressure..............................................................................1198 TORQUE SPECIFICATIONS FOR BOLTS..................................................................1199 Torque For General SAE Bolts.................................................................1199 Torque For General Metric Bolts..............................................................1200 HYDRAULIC CONNECTION SPECIFICATIONS..............................................................1201 Straight Thread O-ring Fitting...............................................................1201 Flare Fitting................................................................................1202 Tubelines And Hoses..........................................................................1202 HYDRAULIC / HYDROSTATIC FLUID SPECIFICATIONS.....................................................1203 Specifications...............................................................................1203 CONVERSIONS......................................................................................1205 Decimal And Millimeter Equivalent Chart......................................................1205 U.S. To Metric Conversion Chart..............................................................1205 SERVICE TOOLS REQUIRED...........................................................................1207 Remote Start Tools...........................................................................1207 Hydraulic Tools..............................................................................1208 Mainframe And Drive Tools....................................................................1210 Electrical Tools.............................................................................1212 Engine Tools.................................................................................1213 HVAC Tools...................................................................................1218 ALPHABETICAL INDEX...................................................................................1219
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