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Bobcat 7753 Loader Service Manual (SN 509611001-509615999)

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 509611001-509615999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 7753 Loader Service Manual (SN 509611001-509615999)

A Bobcat 7753 is a mid-size skid-steer loader that spends its life loading trucks, running forks, and feeding attachments all day. The service manual is what I grab in the yard when a 7753 shows up with weak drive, a dead hydraulic function, or an electrical ghost I can't chase by memory. Buyers reach for this when they're past warranty and want the same teardown and diagnostic info the dealer shop uses. If your serial number falls in the listed range, this is the book you'd use to keep that machine ready to rent or work.

What this manual helps you do

  • Diagnose hydraulic issues, check pressures, and trace leaks in the loader and auxiliary circuits
  • Troubleshoot drive and steering problems in the hydrostatic system before you start throwing parts at it
  • Follow step-by-step disassembly and reassembly for major components like pumps, motors, cylinders, and axles
  • Check electrical schematics to track down no-starts, dead lights, sensor faults, and safety interlock problems
  • Verify adjustment procedures during 50/250/500-hour services so linkages, chains, and controls stay in spec

Who this is for

This fits a shop mechanic, field tech, rental fleet, or owner-operator who wants to actually repair and adjust a 7753, not just run it. If you only need basic operating instructions or daily checks, you want the operator's handbook instead, not this service manual.

FAQ

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

A: These manuals are usually supplied as searchable PDFs, and the wiring diagrams are laid out so you can zoom in and read pin labels on-screen.

Q: Will this cover my exact 7753 machine?

A: It matches 7753 loaders in the serial number range 509611001 through 509615999. If your plate is outside that range, you need a different manual.

Q: Is this the right document if I'm planning engine or hydraulic rebuild work?

A: Yes. This is the workshop service manual that shops use for teardown, specs, and diagnostic procedures.

Bottom line: If you own or maintain a Bobcat 7753 in that serial range and you're doing your own repairs or scheduled services, this is the manual you want.

📘 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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