Bobcat 750 Series Skid-Steer Loader Repair Service Manual – 6720326

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This workshop repair service manual PDF download for the 750 Series 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 750 Series

TABLE OF CONTENTS :

SAFETY INSTRUCTIONS
SERIAL NUMBER LOCATIONS
DELIVERY REPORT
BOBCAT LOADER IDENTIFICATION
PREVENTIVE MAINTENANCE
HYDRAULIC SYSTEM
HYDROSTATIC SYSTEM
DRIVE SYSTEM
MAIN FRAME
ELECTRICAL SYSTEM
ENGINE SERVICE
SPECIFICATIONS
SERVICE MANUAL REVISIONS

MANUAL SPECIFICATION :

File Format : PDF
Language : English
Printable : Yes
Searchable : Yes
Bookmarked : Yes
P/N : 6720326 (8–90)
Total Pages : 356

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

PREVENTIVE MAINTENANCE
SERVICE SCHEDULE
LIFTING AND BLOCKING THE LOADER
Procedure
TRANSPORTING THE LOADER
Procedure
LIFTING THE LOADER
Procedure
LIFT ARM SUPPORT DEVICE
To Disengage Lift Arm Support Device
To Disengage Lift Arm Support Device
OPERATOR CAB
Description
Raising The Operator Cab
Lowering The Operator Cab
Raising The Operator Cab (W/Hand Controls)
Lowering The Operator Cab (W/Hand Controls)
SEAT BAR SYSTEM
Description
Seat Bar Inspection
Seat Bar Maintenance
AIR CLEANER
Replacement Of The Filter Element
FUEL SYSTEM
Fuel Specifications
Filling The Fuel Tank
Fuel Filter
Removing Air From The Fuel System
ENGINE LUBRICATION SYSTEM
Checking Engine Oil
Replacement Of Oil And Filter
ENGINE COOLING SYSTEM
Cleaning The Cooling System
Coolant Level
Removing Coolant From The Cooling System
ALTERNATOR BELT
Adjusting The Alternator Belt
USING A BOOSTER BATTERY (JUMP STARTING)
Procedure
HYDRAULIC/HYDROSTATIC SYSTEM
Checking And Adding Fluid
Hydraulic/Hydrostatic Filter Replacement
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
FAN GEARBOX
Checking Grease Level
DRIVE BELT
Adjustment
Drive Belt Replacement
LUBRICATION OF THE LOADER
Procedure
REMOTE START SWITCH
Procedure
DIAGNOSTIC TOOL
Procedure
SENDER AND SENSOR
Service Checks
Component
MONITOR SERVICE CODES
TROUBLESHOOTING THE BOSS® & LCD DISPLAY

HYDRAULIC SYSTEM
HYDRAULIC / HYDROSTATIC SCHEMATICS
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(s)
Removal And Installation
TILT CYLINDER
Checking The Tilt Cylinder
Removal And Installation
Rod End Seal
HYDRAULIC CONTROL VALVE
Checking The Main Relief Valve
Main Relief Valve Removal And Installation
HYDRAULIC CONTROL VALVE (753H)
Checking The Dual Pressure Main Relief Valve (Low Setting)
Checking The Dual Pressure Main Relief Valve (High Setting)
Adjusting The Dual Pressure Main Relief Valve (Low Setting)
Adjusting The Dual Pressure Main Relief Valve (High Setting)
SELECT VALVE (753H)
Checking The Main Relief Valve In High Horsepower Select Valve
HYDRAULIC CONTROL VALVE
Removal And Installation
HYDRAULIC PUMP
Checking The Output Of The Pump
Checking The Output Of The High Flow Pump
Removal And Installation
HYDRAULIC FILTER HOUSING
Removal And Installation
HYDRAULIC FLUID RESERVOIR
Removal And Installation
CONTROL PEDALS
Removal And Installation
Adjustment
PEDAL INTERLOCK LINKAGE
Removal And Installation
Adjustment
DIVERTER VALVE (OPT.)
Removal And Installation
HAND CONTROLS
Adjustment
Removal And Installation

HYDROSTATIC SYSTEM
TROUBLESHOOTING
HYDROSTATIC SYSTEM INFORMATION
Replenishing Valve Function
FRONT PANEL
Removal And Installation
STEERING LEVERS
Disassembly And Assembly
STEERING LEVER CONTROL HANDLE
Disassembly And Assembly
STEERING LINKAGE
508611001–90879511011001 & Above 511350001 & Above 511475001–75023511525001 & Above 512711001–11125, 11131 & 11139
Steering Linkage Adjustment
Removal And Installation
Centering Plate
Pintle Arm Repair
512711126 – 11130, 11132 – 11138 & 11140 & Above 508690870 & Above 511475024 & Above
Steering Linkage Adjustment
Steering Neutral Adjustment
Removal and Installation
HYDROSTATIC MOTOR
Removal And Installation
HYDROSTATIC PUMP
Removal And Installation
OIL COOLER
Removal And Installation
DRIVE BELT TENSIONER PULLEY
Disassembly
Assembly
Checking Pulley End Play

DRIVE SYSTEM
PARKING BRAKE
Adjustment
Removal And Installation
Brake Block And Pads
Brake Discs
CENTER TRANSMISSION COVER
Installation
FRONT CHAINCASE COVER
Removal And Installation
REAR CHAINCASE COVER
Removal And Installation
MOTOR CARRIER
Shaft Seal Replacement
Removal And Installation (Later Models)
Disassembly And Assembly (Later Models)
Disassembly And Assembly (Early Models)
AXLE SEAL
Removal And Installation
AXLE, SPROCKET AND BEARINGS
Removal And Installation
Checking Axle End Play
DRIVE CHAIN
Removal And Installation
CHAINCASE FLUID
Replacing The Chaincase Fluid

MAIN FRAME
OPERATOR CAB GAS CYLINDER
Removal And Installation
Disassembly And Assembly
OPERATOR CAB
Removal And Installation
REAR DOOR
Removal And Installation
SEAT BAR
Removal
Installation
REAR GRILL
Removal And Installation
BOB–TACH
Removal And Installation
Bob–Tach Lever And Wedge
Bob–Tach Stops (If Equipped)
LIFT ARMS
Removal And Installation
FUEL TANK
Removal And Installation
Fuel Level Sender

ELECTRICAL SYSTEM
ELECTRICAL SCHEMATICS
ELECTRICAL SYSTEM INFORMATION
Description
TROUBLESHOOTING
BATTERY
Removal And Installation
ALTERNATOR
Checking The Alternator Output (Old Style)
Checking The Alternator Regulator (Old Style)
Alternator Output Test (New Style)
Rectifier (Diode) Test (New Style)
Alternator Regulator Test (New Style)
Removal And Installation (Old Style)
Disassembly (Old Style)
Checking The Rotor (Old Style)
Checking The Stator (Old Style)
Checking The Rectifier (Old Style)
Disassembly And Inspection (New Style)
Stator Continuity Test (New Style)
Stator Ground Test (New Style)
Rotor Continuity Test (New Style)
Rotor Ground Test (New Style)
Rectifier Continuity (Diode) Test (New Style)
Assembly (New Style)
STARTER
Checking The Starter
Removal And Installation
Disassembly And Assembly
Cleaning And Inspection
Parts Identification
OPERATING SYSTEM UNIT
Removal And Installation
INSTRUMENT PANEL (S/N 11079 & Above)
Removal And Installation

ENGINE SERVICE
TROUBLESHOOTING
RADIATOR
Removal And Installation
ENGINE MUFFLER
Removal And Installation
BLOWER HOUSING/FAN GEARBOX
Removal And Installation
Tension Pulley Removal And Installation
FAN GEARBOX
Disassembly
Long Housing
Short Housing
Assembly
Long Housing
Short Housing
Checking Backlash
Parts Identification
AIR CLEANER
Removal And Installation
ENGINE
Removal And Installation
S/N 11079 & Above
Installation
FLYWHEEL
Removal And Installation
Flywheel Ring Gear
BELT SHIELD
Removal And Installation
VALVE CLEARANCE
Adjustment
ENGINE COMPRESSION
Checking
GLOW PLUGS
Removal And Installation
Checking
FUEL INJECTION PUMP
Checking The Injection Pump
Adjusting Shut–Off Linkage
Removal And Installation
Timing The Injection Pump
FUEL INJECTION NOZZLES
Removal And Installation
Checking The Injector Nozzle
CYLINDER HEAD
Removal And Installation
Disassembly And Assembly
Servicing The Cylinder Head
Top Clearance
VALVE, VALVE SEAT AND GUIDE
Checking The Valve Guide
Reconditioning The Valve And Valve Seat
Valve Spring
ROCKER ARM AND SHAFT
Checking
TIMING GEARCASE COVER
Removal And Installation
IDLER GEAR AND CAMSHAFT
Removal And Installation
Servicing The Camshaft
Servicing The Idler Gear And Shaft
TIMING GEARS
Checking Backlash
FUEL CAMSHAFT
Removal And Installation
Governor
CRANKSHAFT GEAR
Removal And Installation
OIL PUMP
Removal And Installation
Oil Pump Service
Checking Engine Oil Pressure
Relief Valve
PISTON AND CONNECTING ROD
Removal And Installation
Servicing The Piston And Connecting Rod
Connecting Rod Alignment
CRANKSHAFT AND BEARINGS
Removal And Installation
Servicing The Crankshaft And Bearings
CYLINDER BORE
Checking The Cylinder Bore
WATER PUMP
Disassembly And Assembly

SPECIFICATIONS
753 LOADER SPECIFICATIONS
LOADER DIMENSIONS
OPERATIONS & PERFORMANCE
ENGINE
HYDRAULIC SYSTEM
ELECTRICAL
DRIVE SYSTEM
CAPACITIES
TIRES
753H LOADER SPECIFICATIONS
LOADER DIMENSIONS
OPERATIONS & PERFORMANCE
ENGINE
HYDRAULIC SYSTEM
ELECTRICAL
DRIVE SYSTEM
CAPACITIES
TIRES
ENGINE SPECIFICATIONS
Fuel Injection Nozzles
Fuel Injection Pump
Cylinder Head
Valves
Valve Springs
Valve Timing
Rocker Arms
Camshaft
Tappet
Cylinders
Piston Rings
Piston
Connecting Rod
Oil Pump
Crankshaft
Timing Gear
Thermostat
Crankshaft Re–Grind Data
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
750-001
750-002
750-003
750-004
750-005
750-006
750-007
750-008
750-009
750-010
750-011
750-012
750-013

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