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REDUCTION GEARCASE (Cont’d) Checking Reduction Gearcase Before disassembly of the gearcase do the following checks: Install a dial indicator on the input shaft [A]. The end play must be between 0.00–0.010 inch (0,0254 mm). If not, the following parts may need replacing: Bearing, bearing cups, gear or gearcase housing. Install the dial indicator on the output shaft [B]. The end play must be between 0.00–0.010 inch (0,0254 mm). If not, the following parts may need replacing: Bearing, bearing cups, gear or gearcase housing. Remove the seal (Page 4–14). Install a feeler gauge between the teeth of the gears [C]. The back lash must be between 0.003–0.009 inch (0,076–0,228 mm). If not, the following parts may need replacing: Large gear or the shaft. Measure the bore diameter for the seal. Correct diameter is 3.750 ± 0.001 inch (95,25 ± 0,025 mm). Install a dial indicator on the input shaft. Set the indicator so the stylus is against the pilot bore for the drive motor. Rotate the shaft 360 degrees. Maximum run–out should not exceed 0.009 inch (0,23 mm). If either check (Bore I.D. & Run–Out) is not within these specifications, replace the gearbox. Disassembly The tool listed will be needed to do the following procedure: MEL1047 – Seal Installation Tool Remove the bolts from the end plate [D]. –4–16– A B C D B–13458 B–13457 B–08673 B–08705 853, 853H BICS Loader Service Manual
REDUCTION GEARCASE (Cont’d) Disassembly (Cont’d) Remove the end plate [A]. Remove the dust cap [B]. Loosen the bolt from the output shaft [C]. Remove the bolt and washer [D]. A B C D B–08704 B–08728 B–08721 B–08727 853, 853H BICS Loader –4–17– Service Manual
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EQUIPPED WITH BOBCAT INTERLOCK CONT
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FOREWORD . . . . . . . . . . . . .
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17. Inspect the air cleaner for dam
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SAFETY INSTRUCTIONS Instructions ar
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SERIAL NUMBER LOCATIONS Always use
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All 853 & 853H Bobcat loaders are e
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PREVENTIVE MAINTENANCE Page Number
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SERVICE SCHEDULE Maintenance work m
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TRANSPORTING THE LOADER Procedure A
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LIFT ARM SUPPORT DEVICE Never work
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OPERATOR CAB (Cont’d) Lowering th
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AIR CLEANER SERVICE Replacing Filte
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FUEL SYSTEM Fuel Specifications Use
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ENGINE LUBRICATION SYSTEM Checking
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ENGINE COOLING SYSTEM Cleaning the
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USING A BOOSTER BATTERY (Jump Start
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HYDRAULIC/HYDROSTATIC SYSTEM (Cont
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SPARK ARRESTOR MUFFLER Cleaning Pro
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FINAL DRIVE TRANSMISSION (CHAINCASE
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LUBRICATING THE LOADER (Cont’d) P
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REMOTE START SWITCH (Cont’d) Proc
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HYDRAULIC SYSTEM Page Number BUCKET
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1 FLUID RESERVOIR: Cap . . . . 15.5
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HYDRAULIC/HYDROSTATIC SCHEMATIC 853
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HYDRAULIC SYSTEM TROUBLESHOOTING Ch
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LIFT CYLINDER(S) Checking the Lift
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TILT CYLINDER Checking the Tilt Cyl
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HYDRAULIC CYLINDER Lift Cylinder Id
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HYDRAULIC CYLINDER (Cont’d) Disas
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HYDRAULIC CYLINDER (Cont’d) Disas
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HYDRAULIC CYLINDER (Cont’d) Assem
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HYDRAULIC CYLINDER (Cont’d) Assem
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MAIN RELIEF VALVE Checking the Main
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MAIN RELIEF VALVE (Cont’d) Remova
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DUAL PRESSURE MAIN RELIEF VALVE - 8
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DUAL PRESSURE MAIN RELIEF VALVE - 8
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SELECT VALVE (G.E.M. Block) 853H Ch
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HYDRAULIC CONTROL VALVE (Cont’d)
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HYDRAULIC PUMP Checking the Output
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HYDRAULIC PUMP (Cont’d) Parts Ide
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HYDRAULIC PUMP (Cont’d) Disassemb
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HYDRAULIC PUMP (Cont’d) Assembly
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HYDRAULIC PUMP (Double Gear) 853H C
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HYDRAULIC PUMP (Double Gear) 853H (
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HYDRAULIC FLUID RESERVOIR Removal a
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HYDRAULIC FILTER HOUSING Removal an
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PEDAL INTERLOCK LINKAGE Removal and
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Revised June 96 HYDROSTATIC SYSTEM
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TROUBLESHOOTING Chart The following
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FRONT PANEL Removal and Installatio
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STEERING LEVERS Disassembly and Ass
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STEERING LEVERS (Cont’d) Pre-Adju
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STEERING LEVERS (Cont’d) Adjustin
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STEERING LEVERS (Cont’d) Adjustin
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HYDROSTATIC MOTOR Removal and Insta
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HYDROSTATIC MOTOR (Cont’d) Disass
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HYDROSTATIC MOTOR (Cont’d) Assemb
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HYDROSTATIC MOTOR (Cont’d) 853, 8
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HYDROSTATIC PUMP Removal and Instal
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HYDROSTATIC PUMP (Cont’d) Repleni
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HYDROSTATIC PUMP (Cont’d) Parts I
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HYDROSTATIC PUMP (Cont’d) Parts I
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HYDROSTATIC PUMP (Cont’d) Hydraul
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HYDROSTATIC PUMP (Cont’d) Charge
Page 157 and 158: HYDROSTATIC PUMP (Cont’d) Disasse
Page 165 and 166: HYDROSTATIC PUMP (Cont’d) Inspect
Page 167 and 168: HYDROSTATIC PUMP (Cont’d) Assembl
Page 177 and 178: HYDROSTATIC PUMP (Cont’d) Hydraul
Page 179 and 180: HYDROSTATIC PUMP (Cont’d) Hydrost
Page 181 and 182: DRIVE BELT Adjusting the Drive Belt
Page 183 and 184: DRIVE BELT TENSIONER PULLEY Removal
Page 185 and 186: DRIVE BELT TENSIONER PULLEY (Cont
Page 191 and 192: OIL COOLER Removal and Installation
Page 193 and 194: DRIVE SYSTEM Page Number AXLE SEAL
Page 195 and 196: DRIVE SYSTEM PARKING BRAKE PEDAL Re
Page 197 and 198: PARKING BRAKE DISC Removal and Inst
Page 199 and 200: FRONT CHAINCASE COVER Removal and I
Page 201 and 202: AXLE SEAL (Cont’d) Removal and In
Page 203 and 204: AXLE, BEARINGS AND SPROCKET (Cont
Page 205 and 206: AXLE, BEARING AND SPROCKET (Cont’
Page 207: REDUCTION GEARCASE (Cont’d) Remov
Page 211 and 212: REDUCTION GEARCASE (Cont’d) Disas
Page 213 and 214: REDUCTION GEARCASE (Cont’d) Assem
Page 215 and 216: REDUCTION GEARCASE (Cont’d) Assem
Page 217 and 218: DRIVE CHAIN 853, 853H BICS Service
Page 219 and 220: MAIN FRAME Page Number BOB-TACH Bob
Page 221 and 222: MAIN FRAME SEAT BAR Removal and Ins
Page 223 and 224: SEAT BAR (Cont’d) Removal and Ins
Page 225 and 226: OPERATOR CAB GAS CYLINDER Removal a
Page 227 and 228: OPERATOR CAB Removal and Installati
Page 229 and 230: OPERATOR SEAT Removal and Installat
Page 231 and 232: BOB-TACH (Cont’d) Removal and Ins
Page 233 and 234: BOB-TACH (Cont’d) Bob-Tach Lever
Page 235 and 236: REAR GRILL Removal and Installation
Page 237 and 238: REAR DOOR (Cont’d) Hood Removal a
Page 239 and 240: FUEL TANK (Cont’d) Removal and In
Page 241 and 242: ELECTRICAL SYSTEM Page Number ALTER
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WIRE LEGEND NO.'s COLOR GAUGE PARTS
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WIRE LEGEND NO.'s COLOR GAUGE 12 Or
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ELECTRICAL SYSTEM TROUBLESHOOTING C
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BATTERY Removal and Installation Ba
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ALTERNATOR (Cont’d) Alternator Re
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ALTERNATOR (Cont’d) Disassembly a
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ALTERNATOR (Cont’d) Assembly Reve
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STARTER (Cont’d) Checking the Sta
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STARTER (Cont’d) Disassembly and
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STARTER (Cont’d) Cleaning and Ins
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FRONT LIGHTS Removal and Installati
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ENGINE SERVICE Page Number AIR CLEA
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ENGINE SERVICE TROUBLESHOOTING Char
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RADIATOR Removal and Installation O
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COOLANT RECOVERY TANK Removal and I
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AIR CLEANER HOUSING Removal and Ins
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BLOWER HOUSING/FAN GEARBOX (Cont’
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BLOWER FAN Removal and Installation
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FAN GEARBOX (Cont’d) Disassembly
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FAN GEARBOX (Cont’d) Assembly (Co
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FAN GEARBOX (Cont’d) Assembly (Co
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FAN GEARBOX (Cont’d) 853, 853H BI
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FAN GEARBOX (Cont’d) Checking Bac
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ENGINE (Cont’d) Removal and Insta
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ENGINE (Cont’d) Engine Mount Repl
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BELT SHIELD Removal and Installatio
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GLOW PLUGS Removal and Installation
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FUEL INJECTION PUMP (Cont’d) Remo
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FUEL INJECTION PUMP (Cont’d) Remo
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FUEL INJECTION PUMP (Cont’d) Timi
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FUEL INJECTOR NOZZLES (Cont’d) Re
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CYLINDER HEAD Removal and Installat
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VALVES, VALVE SEAT AND GUIDE Remova
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VALVES, VALVE SEAT AND GUIDE (Cont
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PISTON AND CONNECTING ROD Removal R
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PISTON AND CONNECTING ROD (Cont’d
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PISTON AND CONNECTING ROD (Cont’d
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CYLINDER LINERS Checking the Cylind
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MAIN BEARINGS (Cont’d) Installati
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CRANKSHAFT Removal and Installation
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CRANKSHAFT GEAR Removal and Install
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TIMING GEARCASE COVER Removal and I
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IDLER GEAR AND HUB Removal Remove t
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FUEL INJECTION PUMP IDLER GEAR Remo
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TIMING GEARCASE 853, 853H BICS Serv
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CAMSHAFT (Cont’d) Camshaft Bearin
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OIL PAN Removal Remove the oil drai
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OIL PUMP (Cont’d) Checking (Cont
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WATER PUMP Removal and Installation
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WATER PUMP (Cont’d) Assembly (Con
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WATER JACKET TUBE Removal and Insta
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SYSTEMS ANALYSIS Page Number BICS S
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BOBCAT INTERLOCK CONTROL SYSTEM (BI
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BICS SYSTEM CONTROLLER (Cont’d) C
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SEAT BAR SENSOR (Cont’d) Seat Bar
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SEAT SENSOR (Cont’d) Seat Sensor
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LIFT LOCK BY-PASS VALVE Removal and
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TILT LOCK VALVE Removal and Install
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BOSS® DIAGNOSTIC TOOL Procedure Th
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SERVICE CODES (Cont’d) The follow
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TROUBLESHOOTING THE BOSS® & LCD DI
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BOSS® INSTRUMENT PANEL Removal and
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PWM MODULE (Cont’d) Description (
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PWM CONTROL HANDLE Handle Testing T
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SPECIFICATIONS Page Number DECIMAL
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LOADER SPECIFICATIONS LOADER DIMENS
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ENGINE SPECIFICATIONS All dimension
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ENGINE SPECIFICATIONS (Cont’d) Al
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TORQUE SPECIFICATIONS FOR LOADER Sp
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HYDRAULIC/HYDROSTATIC FLUID SPECIFI
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DECIMAL AND MILLIMETER EQUIVALENTS
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AFFECTING: Product BOBCAT LOADER Mo
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AFFECTING: Product BOBCAT LOADER Mo
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TAKE OUT PUT IN 853 BICS - OPERATOR
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