Bobcat 853, 853H Skid Steer Loader Service Manual
439 pages · Publication 6724012_4_95
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What's inside
From the manual's own table of contents: 20 sections, 478 entries. See sample pages (PDF, 441 KB)
MAINTENANCE SAFETY
FOREWORD7 topics
- SAFETY INSTRUCTIONS
- SERIAL NUMBER LOCATIONS
- LOADER SERIAL NUMBER
- ENGINE SERIAL NUMBER
- DELIVERY REPORT
- BOBCAT LOADER IDENTIFICATION
- OPTIONS AND ACCESSORIES
PREVENTIVE MAINTENANCE
SERVICE SCHEDULE61 topics
- LIFTING AND BLOCKING THE LOADER
- Procedure
- TRANSPORTING THE LOADER
- Procedure
- TOWING THE LOADER
- Procedure
- STOPPING THE BOBCAT LOADER
- LIFTING THE LOADER
- Four Point Lift
- Single Point Lift
- LIFT ARM SUPPORT DEVICE
- Engaging The Lift Arm Support Device
- Disengaging The Lift Arm Support Device
- OPERATOR CAB
- Description
- Raising The Operator Cab
- Lowering The Operator Cab
- Emergency Exit
- SEAT BAR RESTRAINT SYSTEM
- Description
- Seat Bar Inspection
- Seat Bar Maintenance
- AIR CLEANER SERVICE
- Replacing Filter Element
- FUEL SYSTEM
- Fuel Specifications
- Filling The Fuel Tank
- Fuel Filter
- Removing Air From The Fuel System
- ENGINE LUBRICATION SYSTEM
- Checking Engine Oil
- Replacing Oil And Filter
- ENGINE COOLING SYSTEM
- Cleaning The Cooling System
- Checking The Coolant Level
- Removing Coolant From The Cooling System
- Propylene Glycol
- ALTERNATOR BELT
- Adjusting The Alternator Belt
- USING A BOOSTER BATTERY (Jump Starting)
- Procedure
- HYDRAULIC/HYDROSTATIC SYSTEM
- Checking And Adding Fluid
- Replacing Hydraulic/Hydrostatic Filters
- Replacing Hydraulic Fluid
- Hydraulic Reservoir Breather Cap
- SPARK ARRESTOR MUFFLER
- Cleaning Procedure
- TIRE MAINTENANCE
- Wheel Nuts
- Tire Rotation
- Tire Mounting
- FINAL DRIVE TRANSMISSION (CHAINCASE)
- Checking And Adding Oil
- Removing Oil From The Chaincase
- FAN GEARBOX
- Checking And Maintaining
- LUBRICATING THE LOADER
- Procedure
- REMOTE START SWITCH
- Procedure
HYDRAULIC SYSTEM
HYDRAULIC / HYDROSTATIC SCHEMATICS73 topics
- TROUBLESHOOTING
- HYDRAULIC SYSTEM INFORMATION
- Flare Connections
- O–ring Face Seal Connection
- Straight Thread O–ring Fitting
- Tubelines And Hoses
- LIFT CYLINDER(S)
- Checking The Lift Cylinder
- Removal And Installation
- TILT CYLINDER
- Checking The Tilt Cylinder
- Removal And Installation
- Rod End Seal
- HYDRAULIC CYLINDER
- Lift Cylinder Identification
- Tilt Cylinder Identification
- Disassembly
- Assembly
- MAIN RELIEF VALVE
- Checking The Main Relief Valve
- Checking The Main Relief Valve Without Auxiliaries
- Removal And Installation
- DUAL PRESSURE MAIN RELIEF VALVE – 853H
- Checking The Low Setting
- Checking The High Setting
- Adjusting The Low Setting
- Adjusting The High Setting
- SELECT VALVE (G.E.M. Block) 853H
- Checking The Main Relief Valve
- HYDRAULIC CONTROL VALVE
- Removal And Installation
- Identification Chart
- Disassembly And Assembly
- Main Relief Valve
- Port Relief Valve
- Anti–Cavitation Valve
- Rubber Boot
- Lift Spool And Detent
- Tilt Spool And Centering Spring
- Auxiliary Spool
- Auxiliary Electric Solenoid
- H Port – Auxiliary Section
- Base End Restrictor
- Inspection
- Spool Seal Installation
- HYDRAULIC PUMP
- Checking The Output Of The Pump
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection
- Assembly
- HYDRAULIC PUMP (Double Gear) 853H
- Checking The Output Of The Pump
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection
- Assembly
- BUCKET POSITION VALVE (Optional)
- Removal And Installation
- HYDRAULIC FLUID RESERVOIR
- Removal And Installation
- HYDROSTATIC FILTER HOUSING
- Removal And Installation
- HYDRAULIC FILTER HOUSING
- Removal And Installation
- CONTROL PEDALS
- Removal And Installation
- Pedal Adjustment
- PEDAL INTERLOCK LINKAGE
- Removal And Installation
- Pedal Interlock Linkage Adjustment
HYDROSTATIC SYSTEM
TROUBLESHOOTING44 topics
- HYDROSTATIC SYSTEM INFORMATION
- Replenishing Valve Function
- FRONT PANEL
- Removal And Installation
- STEERING LEVERS
- Disassembly And Assembly
- Pre–Adjustment Checks
- Adjusting Lever Freeplay
- Adjusting The Wheel RPM Forward Compared To Reverse Travel
- Adjusting The Steering Neutral Setting
- Adjusting The Wheel RPM Left Compared To Right Side
- HYDROSTATIC MOTOR
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection
- Assembly
- Timing The Hydrostatic Motor
- HYDROSTATIC PUMP
- Removal And Installation
- Replenishing/High Pressure Relief Valve
- Parts Identification
- Hydraulic Pump Removal
- Hydrostatic Pump Separation
- Charge Pump Disassembly
- Disassembly
- Inspection
- Assembly
- Charge Pump Assembly
- Hydrostatic Pump Connection
- Hydraulic Pump Installation
- Hydrostatic Pump Neutral Adjustment
- DRIVE BELT SHIELD
- Removal And Installation
- DRIVE BELT
- Adjusting The Drive Belt
- Replacing The Drive Belt
- DRIVE BELT TENSIONER PULLEY
- Removal And Installation
- Disassembly
- Assembly
- Checking Pulley End Play
- OIL COOLER
- Removal And Installation
DRIVE SYSTEM
PARKING BRAKE PEDAL22 topics
- Removal And Installation
- Disassembly And Assembly
- PARKING BRAKE DISC
- Removal And Installation
- FRONT CHAINCASE COVER
- Removal And Installation
- REAR CHAINCASE COVER
- Removal And Installation
- AXLE SEAL
- Removal And Installation
- AXLE, SPROCKET AND BEARINGS
- Removal And Installation
- REDUCTION GEARCASE
- Reduction Gearcase Seal
- Removal And Installation
- Checking Reduction Gearcase
- Disassembly
- Assembly
- DRIVE CHAIN
- Removal And Installation
- CHAINCASE FLUID
- Removing The Fluid From The Chaincase
MAIN FRAME
SEAT BAR26 topics
- Removal And Installation
- Assembly
- Compressing The Gas Cylinder
- OPERATOR CAB GAS CYLINDER
- Removal And Installation
- Disassembly And Assembly
- Removal And Installation
- OPERATOR SEAT
- Removal And Installation
- BOB–TACH
- Removal And Installation
- Bob–Tach Lever And Wedge
- Bob–Tach Stops
- LIFT ARMS
- Removal And Installation
- REAR GRILL
- Removal And Installation
- REAR DOOR
- Removal And Installation
- Hood Removal And Installation
- Bumper Removal And Installation
- Door Latch Removal And Installation
- Door Latch And Catch Adjustment
- FUEL TANK
- Removal And Installation
- Inlet Screen
ELECTRICAL SYSTEM
ELECTRICAL SCHEMATICS29 topics
- ELECTRICAL SYSTEM INFORMATION
- Description
- Fuse Location (Standard & BOSS® Option)
- BATTERY
- Removal And Installation
- ALTERNATOR
- Alternator Output Test
- Rectifier (Diode) Test
- Alternator Regulator Test
- Removal And Installation
- Disassembly And Inspection
- Stator Continuity Test
- Stator Ground Test
- Rotor Continuity Test
- Rotor Ground Test
- Rectifier Continuity (Diode) Test
- Assembly
- STARTER
- Removal And Installation
- Checking The Starter
- Parts Identification
- Disassembly And Assembly
- Cleaning And Inspection
- STANDARD INSTRUMENT PANEL
- Removal And Installation
- FRONT LIGHTS
- Removal And Installation
- RELAY SWITCHES
- Location
ENGINE SERVICE118 topics
- ENGINE SPEED CONTROL
- Removal And Installation
- Disassembly
- RADIATOR
- Removal And Installation
- COOLANT RECOVERY TANK
- Removal And Installation
- ENGINE MUFFLER
- Removal And Installation
- AIR CLEANER HOUSING
- Removal And Installation
- BLOWER HOUSING/FAN GEARBOX
- Removal And Installation
- FAN DRIVE TENSION PULLEY
- Removal And Installation
- BLOWER FAN
- Removal And Installation
- Parts Identification
- Disassembly
- Assembly
- Checking Backlash
- ENGINE
- Removal And Installation
- Engine Mount Replacement
- FLYWHEEL
- Removal And Installation
- Flywheel Ring Gear
- BELT SHIELD
- Removal And Installation
- VALVE CLEARANCE
- Adjustment
- ENGINE COMPRESSION
- Checking
- GLOW PLUGS
- Removal And Installation
- Checking The Glow Plugs
- FUEL INJECTION PUMP
- Description
- Removal And Installation
- Timing The Injection Pump
- FUEL INJECTOR NOZZLES
- Removal And Installation
- Checking
- CYLINDER HEAD
- Removal And Installation
- Cylinder Head Surface Alignment
- Exhaust Manifold
- VALVES, VALVE SEAT AND GUIDE
- Removal
- Installation
- Reconditioning The Valve And Valve Seats
- Valve Seat Insert
- Valve Guide
- Valve Spring
- ROCKER ARM AND SHAFT
- Disassembly And Assembly
- Checking Rocker Arm And Push Rods
- PISTON AND CONNECTING ROD
- Removal
- Disassembly
- Checking
- Assembly
- Installation
- CYLINDER LINERS
- Checking The Cylinder Bore
- Removal
- Installation
- MAIN BEARINGS
- Description
- Removal
- Installation
- Crankshaft End Play
- CRANKSHAFT
- Removal And Installation
- Checking Tuffriding (Soft Nitriding) Coating
- Checking the Crankshaft
- CRANKSHAFT GEAR
- Removal And Installation
- TIMING GEARCASE COVER SEAL
- Removal And Installation
- TIMING GEARCASE COVER
- Removal And Installation
- IDLER GEAR AND HUB
- Removal
- Checking
- Installation
- FUEL INJECTION PUMP IDLER GEAR
- Removal And Installation
- Bearing Installation
- CAMSHAFT GEAR
- Removal And Installation
- TIMING GEARCASE
- Removal And Installation
- CAMSHAFT
- Removal And Installation
- Checking
- Camshaft Bearings
- Tappets
- Tappet Installation
- OIL PAN
- Removal
- Installation
- OIL PUMP
- Removal And Installation
- Checking
- Gear Replacement
- Rotor Replacement
- Oil Pump Relief Valve
- Oil Filter Housing And Block
- WATER PUMP
- Removal And Installation
- Disassembly
- Assembly
- THERMOSTAT
- Removal And Installation
- Checking The Thermostat
- WATER JACKET TUBE
- Removal And Installation
SYSTEMS ANALYSIS
BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)49 topics
- Inspecting The BICS System Controller (Engine STOPPED – Key ON)
- Inspecting The Seat And Seat Bar Sensors (Engine RUNNING)
- Inspecting The Traction Lock (Engine RUNNING)
- Inspecting The Lift Arm By–Pass Control
- Maintenance
- Troubleshooting Chart
- Troubleshooting Guide
- BICS SYSTEM CONTROLLER
- BICS™ SYSTEM CONTROLLER
- Removal And Installation
- Controller Test
- SEAT BAR SENSOR
- Removal And Installation
- Seat Bar Sensor Test
- SEAT SENSOR
- Removal And Installation
- Seat Sensor Test
- TRACTION LOCK
- Removal And Installation
- LIFT LOCK BY–PASS VALVE
- Removal And Installation
- Disassembly And Assembly
- TILT LOCK VALVE
- Removal And Installation
- Disassembly And Assembly
- BOSS® DIAGNOSTIC TOOL
- Procedure
- SENDER AND SENSOR
- Service Checks
- Component
- RPM SENSOR
- Adjustment
- MONITOR SERVICE CODES
- TROUBLESHOOTING THE BOSS® & LCD DISPLAY
- OPERATION SENSING SYSTEM UNIT
- Removal And Installation
- BOSS® INSTRUMENT PANEL
- Removal And Installation
- PWM MODULE
- Description
- PWM TROUBLESHOOTING
- Conditions
- Chart
- PWM CONTROL HANDLE
- Handle Testing
- PWM ELECTRIC SOLENOID
- Solenoid Coil Testing
- ELECTRICAL/HYDRAULIC CONTROLS REFERENCE
- Controls Identification Chart
SPECIFICATIONS
LOADER SPECIFICATIONS29 topics
- LOADER DIMENSIONS
- OPERATION & PERFORMANCE
- ENGINE
- HYDRAULIC SYSTEM
- ELECTRICAL
- DRIVE SYSTEM
- CAPACITIES
- TIRES
- VIBRATION DATA
- ENGINE SPECIFICATIONS
- Cylinder Head
- Valve, Valve Guide & Seat Insert
- Valve Springs
- Rocker Arm
- Tappets
- Piston, Pin & Rings
- Connecting Rod & Bearing
- Cylinder Liners
- Camshaft
- Crankshaft
- Idler Gear
- Oil Pump
- Fuel System
- Torque For General Metric Bolts
- TORQUE SPECIFICATIONS FOR LOADER
- HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
- STANDARD TORQUE SPECIFICATIONS FOR BOLTS
- DECIMAL AND MILLIMETER EQUIVALENTS
- U.S. TO METRIC CONVERSION
SERVICE MANUAL REVISIONS
Inside this manual
Real pages from this service manual (460 pages). Open the sample pages (PDF, 441 KB)
- Diagram, page 308: STARTER
- Specifications, page 392: CAMSHAFT
- Troubleshooting, page 413: BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
- Color page, page 277
- Color page, page 426: 853, 853H BICS Loader
- Foldout diagram (color), page 268
Other manuals for this machine
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This manual: Service Manual 6724012_4_95$69.63
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This is a service manual
Here's how it compares to the other manual types.
This manual
Service manual
Factory repair procedures and technical information such as specifications, troubleshooting, and wiring and hydraulic diagrams, for the models and systems the manual covers. See What's inside for its topics.
Operator's manual
Safe operation, controls, maintenance schedules, lubrication points, inspections, and basic checks. Repair procedures are in the service manual.
Parts manual
Illustrated diagrams with factory part numbers for identifying components and ordering parts. Repair procedures are in the service manual.
Engine service manuals are sometimes sold separately, since certain machine models were offered with more than one engine option.
What it's used for
Factory manual for in-house farm and construction shop use. Straightforward, complete, and easy to follow. It contains the OEM information dealership service departments and parts counters use to diagnose problems, identify components, and perform maintenance or repairs correctly.
Service shops and owner/operators who repair their own equipment
Identifying correct parts and seeing how assemblies come apart and go back together
Keeping equipment running with less downtime
Factory manual, 439 pages
Quantity one is the manual described above.
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