Bobcat 642B Skid-Steer Loader Repair Service Manual – 6570275

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This workshop repair service manual PDF download for the 642B Bobcat Skid-Steer Loader has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judgements. Make sure you understand the contents of this manual and use it to fully at every opportunity.

APPLICABLE MODELS :

Bobcat Loader 642B

TABLE OF CONTENTS :

PREVENTIVE MAINTENANCE
HYDRAULIC SYSTEM
HYDROSTATIC SYSTEM
DRIVE SYSTEM
MAIN FRAME
ELECTRICAL SYSTEM
ENGINE SERVICE
TECHNICAL DATA
SPECIFICATIONS
SERVICE MANUAL REVISIONS

MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
P/N : 6570275 (4–86)
Total Pages : 228

This Manual PDF Download contains specs, diagrams, actual real photo illustrations, and schemes. In addition to space savings, nice thing about having completly searcheble PDF files instead of a hard-printed manual is that you can use the Search feature in your PDF reader software (Adobe Acrobat) to find just what your looking for and just print out the exact pages you need or all manual easily. This is the same manual your local dealer will use when doing a repair. This is a must for the Do-It-Yourselfer! Saving Yourself $$$$$$ In Service Repair And Maintenance Costs !!!!

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MAINTENANCE SAFETY
CONTENTS
FOREWORD
SAFETY INSTRUCTIONS
SERIAL NUMBER LOCATIONS
LOADER SERIAL NUMBER
ENGINE SERIAL NUMBER
DELIVERY REPORT
BOBCAT LOADER IDENTIFICATION

PREVENTIVE MAINTENANCE
SERVICE SCHEDULE
LIFTING AND BLOCKING THE BOBCAT LOADER
Procedure
TRANSPORTING THE BOBCAT LOADER
Procedure
LIFT ARM STOP
Procedure
OPERATORS CAB
Raising the Operator Cab
Lowering the Operator Cab
SEAT BAR SYSTEM
USING EXTRA BATTERY (JUMP START)
Procedure
Seat Bar Description
Seat Bar Inspection
Seat Bar Maintenance
REMOTE START SWITCH
Procedure

HYDRAULIC SYSTEM
HYDRAULIC / HYDROSTATIC SCHEMATICS
TROUBLESHOOTING
HYDRAULIC SYSTEM INFORMATION
Flare Connections
Straight Thread O–ring Fitting
Tubelines and Hoses
LIFT CYLINDER
Checking the Lift Cylinder(s)
Removal and Installation
TILT CYLINDER
Checking the Tilt Cylinder
Removal and Installation
Rod End Seal
HYDRAULIC CONTROL VALVE
Checking the Main Relief Valve with Auxiliary Couplers (Opt.)
Checking The Main Relief Valve W/O Auxiliaries
Main Relief Valve Removal And Installation
Adjusting The Main Relief Valve
Removal And Installation
HYDRAULIC PUMP
Checking The Output Of The Hydraulic Pump
Removal And Installation
PORT BLOCK
Removal And Installation
Cold Weather By–Pass Valve
Case Drain Relief Valve
HYDRAULIC FLUID FILTER HOUSING
Removal and Installation
Sender Switch
HYDRAULIC FLUID RESERVOIR
Removal And Installation
HYDRAULIC CONTROL PEDALS
Removal And Installation
Adjustment
PEDAL LOCK LINKAGE
Adjustment

HYDROSTATIC SYSTEM
TROUBLESHOOTING
Chart
HYDROSTATIC SYSTEM INFORMATION
High Pressure Relief/Replenishing Valve Function
FRONT PANEL
Removal And Installation
STEERING LEVERS
Removal And Installation
Repairing The Steering Levers
STEERING LINKAGE
Steering Linkage Adjustment
Removal And Installation
Repairing The Pintle Lever
HYDROSTATIC MOTOR
Removal And Installation
HYDROSTATIC PUMP
Checking Charge Pressure
Charge Pressure Relief Valve
Checking High Pressure Relief Valves
Removal And Installation
High Pressure Hose Routing
Tow Valves

DRIVE SYSTEM
PARKING BRAKE
Adjustment
Removal and Installation
Block and Pucks
AXLES, SEALS AND BEARINGS
Removal
Installation
FINAL DRIVE CHAIN
Removal
Installation
CHAINCASE FLUID
Replacing the Chaincase Fluid

MAIN FRAME
OPERATOR CAB
Removal And Installation
OPERATOR CAB GAS CYLINDER
Removal And Installation
REAR DOOR
Door Latch Adjustment
Removal And Installation
LIFT ARMS
Removal And Installation
BOB–TACH FRAME (40 Series)
Removal and Installation
Tilt Cylinder Rod End Seal
Disassembly and Assembly
BOB–TACH (50 Series)
Removal And Installation
Bob–Tach Lever And Wedge
FUEL TANK
Removal And Installation

ELECTRICAL SYSTEM
ELECTRICAL SCHEMATICS
ELECTRICAL SYSTEM
Description
TROUBLESHOOTING
Chart
BATTERY
Checking The Battery
Removal And Installation
ALTERNATOR
Checking The Alternator Output
Checking the Alternator Regulator
Removal and Installation
Disassembly And Assembly
STARTER
Checking The Starter
Removal And Installation
Disassembly And Assembly
Cleaning and Inspection
Replacing the Brushes

ENGINE SERVICE
TROUBLESHOOTING
Chart
VALVE CLEARANCE
Adjustment
ENGINE COMPRESSION
Checking
IGNITION TIMING
Procedure
DISTRIBUTOR
Removal And Installation
Point Gap Adjustment
Disassembly And Assembly
Checking Centrifugal Advance
Checking Vacuum Advance
CARBURETOR
Description
Removal And Installation
Disassembly And Assembly
Inspection
Adjustment
Governor Adjustment
Governor Oil Level
FUEL PUMP
Removal And Installation
Inspection
Check The Fuel Pump
Fuel Filter
ENGINE BELT SHIELD
Removal And Installation
REAR GRILL
Removal and Installation
ENGINE
Removal And Installation
OIL COOLER AND BLOWER HOUSING
Removal And Installation
RADIATOR
Removal And Installation
ENGINE MUFFLER
Removal And Installation
ENGINE FLYWHEEL AND U–JOINT
Removal And Installation
Flywheel Ring Gear
ROCKER ARMS
Removal
Inspection
Installation
CAMSHAFT
Removal And Installation
Inspection
CYLINDER HEAD
Removal And Installation
Inspection
VALVES
Removal
Installation
Reconditioning The Valve And Valve Seat
Valve Seat Inserts
Valve Guide
Valve Spring
PISTON AND CONNECTING ROD
Removal
Disassembly
Inspection
Assembly
Installation
PISTON PIN
Assembly Of The Tool
Removal Of The Piston Pin
Installation Of The Piston Pin
CYLINDER LINERS
Checking
CRANKSHAFT AND MAIN BEARINGS
Description
Removal
Checking
Checking Oil Clearance (Plastic Gauge)
Installation
Crankshaft End Play
Rear Oil Seal
TIMING BELT
Adjustment
Removal
Inspection
Assembly
FRONT CASE AND OIL PAN
Removal And Installation
OIL PUMP
Removal
Inspection
Installation
Relief Valve
FRONT CASE SEAL
Removal And Installation
WATER PUMP
Removal And Installation
Inspection
THERMOSTAT
Removal And Installation
Inspection
ANTI–DIESEL SYSTEM
Function
Removal and Installation

SPECIFICATIONS
LOADER SPECIFICATIONS
OPERATIONS & PERFORMANCE
ENGINE
HYDRAULIC SYSTEM
ELECTRICAL
DRIVE SYSTEM
CAPACITIES
TIRES
ENGINE SPECIFICATIONS
General
Cylinder Head
Cylinder Block
Piston
Piston Pin
Connecting Rod
Crankshaft
Flywheel
Camshaft
Valve Train
Valve Guide
Valve Spring
Rocker Arm and Shaft
Oil Pump
Fuel Pump
Carburetor
Water Pump
Thermostat
Starter
Alternator
Distributor
Spark Plug
Engine Torque
TORQUE FOR GENERAL METRIC BOLTS
TORQUE SPECIFICATIONS FOR LOADER
HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
Specifications
DECIMAL AND MILLIMETER EQUIVALENTS
U.S. TO METRIC CONVERSION
STANDARD TORQUE SPECIFICATIONS FOR BOLTS

SERVICE MANUAL REVISIONS
642B-1
642B-2
642B-3
642B-4
642B-5
642B-6
642B-7
642B-8
642B-9
642B-10

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