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Bobcat 7753 Loader Service Manual (SN 509630001-509634999)

Format: PDF (Printable Document)

File Language: English

File Pages: 334

File Size: 17.28 MB (Speed Download Link)

Brand: Bobcat

Model: 7753 Loader

Book No: 6720899

Serial No: SN 509630001-509634999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 7753 Loader Service Manual (SN 509630001-509634999)

A 7753 skid-steer is a tight little loader that ends up doing everything from barn cleanout to pallet work to grading driveways. The service manual is what I grab when I'm in a customer's gravel lot with a dead machine and need the right procedure, not guesses. People use it to chase hydraulic issues, sort out electrical gremlins, and rebuild worn components without a pile of wrong parts and return trips. If you're trying to keep a 7753 alive without hauling it to the dealer every time, this is the book you reach for.

What this manual helps you do

  • Trace hydraulic and hydrostatic circuits so you can troubleshoot weak drive, slow lift, or no auxiliary power
  • Check and verify test port locations, pressure check steps, and adjustment procedures for the 7753's systems
  • Follow teardown and reassembly sequences on the engine, pumps, drive motors, and cylinders with the right order of operations
  • Diagnose wiring and sensor problems using machine-specific electrical schematics for this 7753 serial range
  • Replace wear parts and set linkages and controls so the loader runs straight, lifts square, and responds correctly

Who this is for

This is for a shop mechanic, field tech, rental fleet, or owner-operator working on a Bobcat 7753 loader in the 509630001-509634999 serial range. If you just need basic controls, safety, or daily service points, you want the operator's handbook instead, not this manual.

FAQ

Q: Is this a searchable PDF, and can I read the wiring diagrams on a laptop or tablet?

A: Yes, these manuals are normally searchable PDFs, and the schematics are made to be zoomed so you can read pin numbers and wire colors.

Q: My 7753 serial number is outside 509630001-509634999, will this match my machine?

A: No, you should match your serial to a manual that lists your exact range, or some procedures and specs may be off.

Q: I just need to look up part numbers, is this the right manual?

A: No, for parts lookup you want the Bobcat parts catalog. This is the repair and diagnostic manual.

If your 7753 falls in that serial range and you're doing real repair work, this is the right service manual to buy.

📘 Show Index

Table of Contents:

  • 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 LOADER
      • Procedure
    • TRANSPORTING THE LOADER
      • Procedure
    • SINGLE POINT LIFT
    • LIFT ARM SUPPORT DEVICE
      • Installing Lift Arm Support Device
      • Removing 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
      • (Standard)
      • (Optional)
      • Replacing 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
      • Replacing of Oil and Filter
    • COOLING SYSTEM
      • Cleaning the Cooling System
      • Checking the Coolant Level
      • Removing Coolant from the Cooling System
    • ALTERNATOR BELT
      • Adjusting the Alternator Belt
    • USING A BOOSTER BATTERY (JUMP STARTING)
      • Procedure
    • BATTERY
      • Removal and Installation
    • HYDRAULIC/HYDROSTATIC SYSTEM
      • Checking and Adding Fluid
      • Replacing the Hydraulic/Hydrostatic Filter
      • Checking the Hydraulic Reservoir Breather Cap
      • Replacing the Hydraulic Fluid
    • 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 Grease Level
    • DRIVE BELT
      • Adjustment
      • Drive Belt Replacement
      • Adjusting the Drive Belt With The Spring Loaded Drive Idler
      • Replacing The Drive Belt With The Spring Loaded Drive Idler
    • LUBRICATION OF THE BOBCAT LOADER
      • Procedure
    • PIVOT PINS
    • 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
      • Checking the Main Relief Valve
      • Main Relief Valve Removal and Installation
      • Removal and Installation
    • HYDRAULIC PUMP
      • Checking the Output of the Pump
      • Removal and Installation (Early Models)
      • Removal and Installation (Later Models)
    • HYDRAULIC FILTER HOUSING
      • Removal and Installation
    • HYDRAULIC FLUID RESERVOIR
      • Removal and Installation
    • CONTROL PEDALS
      • Removal and Installation
      • Adjustment
    • PEDAL INTERLOCK SHIELD AND LINKAGE
      • Removal and Installation
      • Adjustment
  • HYDROSTATIC SYSTEM
    • TROUBLESHOOTING
    • HYDROSTATIC SYSTEM INFORMATION
      • Replenishing Valve Function
    • FRONT PANEL
      • Removal and Installation
    • STEERING LEVERS
      • Disassembly and Assembly
    • STEERING LINKAGE (S/N 30758 & Below)
      • Steering Linkage Adjustment
      • Removal & Installation
      • Centering Plate
      • Pintle Arm Removal and Installation
      • Pintle Arm Lobe Removal and Installation
    • STEERING LINKAGE (S/N 30759 & Above)
      • Removal and Installation
      • Steering Linkage Adjustment
      • Steering Neutral Adjustment
    • 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
    • SPRING LOADED DRIVE BELT IDLER
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
  • DRIVE SYSTEM
    • PARKING BRAKE
      • Adjustment
      • Removal and Installation
      • Brake Block and Pads
      • Brake Discs
    • CENTER TRANSMISSION COVER
      • Installation
    • FRONT CHAINCASE COVER
      • Removal and Installation
    • MOTOR CARRIER (Later Models)
      • Shaft Seal Replacement
      • Early Models
      • Removal and Installation
      • Disassembly and Assembly
    • AXLE HUB AND SEAL
      • Removal and Installation
    • AXLE, SPROCKET AND BEARINGS
      • Removal and Installation
    • 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
    • REAR GRILL
      • Removal and Installation
    • SEAT BAR
      • Removal
      • Installation
    • BOB–TACH
      • Removal and Installation
      • Bob–Tach Lever and Wedge
    • LIFT ARM LINK
      • Removal and Installation
    • 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 (New Style)
      • Stator Continuity Test (New Style)
      • Stator Ground Test (New Style)
      • Disassembly (New Style)
      • Rotor Ground Test (New Style)
      • Rectifier Continuity (Diode) Test (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
      • Removal and Installation
  • ENGINE SERVICE
    • TROUBLESHOOTING
    • RADIATOR
      • Removal and Installation
    • ENGINE MUFFLER
      • Removal and Installation
    • BLOWER HOUSING/FAN GEARBOX
      • Removal and Installation
    • FAN GEAR BOX
      • Disassembly
        • Long Housing
        • Short Housing
      • Assembly
        • Long Housing
        • Short Housing
      • Checking Backlash
      • Parts Identification
    • TENSION PULLEY
      • Removal and Installation
    • AIR CLEANER
      • Removal And Installation
    • ENGINE
      • Removal and 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
    • LOADER DIMENSIONS
    • OPERATIONS & PERFORMANCE
    • ENGINE
    • HYDRAULIC SYSTEM
    • ELECTRICAL
    • DRIVE SYSTEM
    • CAPACITIES
    • TIRES
    • ENGINE SPECIFICATIONS
      • Fuel Injector Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Valve Timing
      • Rocker Arms
      • Camshaft
      • Tappet
      • Cylinders
      • Piston Rings
      • Pistons
      • 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
    • 7753–001
    • 7753–002
    • 7753–003
    • 7753–004
    • 7753–005
    • 7753–006
    • 7753–007
    • 7753–008
    • 7753–009
    • 7753–010
    • 7753–011
    • 7753-012

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