A 753 loader is a mid-size skid-steer that spends its days loading trucks, running augers, pushing snow, and cleaning up demo. The person who reaches for this manual is the one chasing down a hydraulic leak, sorting a no-drive issue, or trying to get charge pressure where it should be so the machine can get back on the job and make money. Around my shop, this is what I pull when I'm past guessing and need the actual factory procedure in front of me.
What this manual helps you do
- Diagnose drive and hydraulic issues, then check pressures and flows at the right test ports for this 753 series.
- Follow step-by-step removal and install procedures for pumps, drive motors, cylinders, and major loader components.
- Trace and repair electrical problems using wiring diagrams that match this serial range, including safety interlocks.
- Rebuild and adjust mechanical systems like the Bob-Tach, steering linkages, and brake components with the correct sequences.
- Verify adjustments after engine or hydrostatic work so the loader drives straight, lifts correctly, and safety systems work.
Who this is for
This is aimed at small contractors, owner-operators, rental fleets, and shop mechanics who actually turn wrenches on a Bobcat 753. If you just want to know how to run the machine or basic maintenance intervals, you want the operator's handbook instead, not this service manual.
FAQ
Q: Is this a searchable PDF, and can you read the wiring diagrams clearly?
A: Yes, it's a PDF, and in my experience these scan well enough that wiring diagrams and hydraulic schematics are readable when you zoom in.
Q: My 753 has a different serial number. Will this still match my machine?
A: This one is specific to SN 513911001-513911148. If your plate is outside that range, you should look for the manual that matches your serial.
Q: I'm only doing filters and fluid changes. Is this the right manual?
A: Probably not. This is a workshop manual for real repair and diagnostics, not routine greasing and basic service.
Bottom line: If your 753's serial tag falls between 513911001 and 513911148 and you're doing real repairs, this is the right manual. If the serial doesn't match, skip it.
📘 Show Index
Table of Contents:
- MAINTENANCE SAFETY
- ALPHABETICAL INDEX
- 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
- TRANSPORTING THE LOADER
- TOWING THE LOADER
- 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 (Foot Pedals)
- Description
- Seat Bar Inspection
- Seat Bar Maintenance
- SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)
- Description
- Seat Bar Inspection
- Seat Bar Maintenance
- SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)
- Description
- Seat Bar Inspection
- Seat Bar Maintenance
- AIR CLEANER SERVICE
- FUEL SYSTEM
- Fuel Specifications
- Filling The Fuel Tank
- Fuel Filter
- Removing Air From The Fuel System
- ENGINE LUBRICATION SYSTEM
- Checking Engine Oil
- Oil Chart
- Replacing Oil And Filter
- ENGINE COOLING SYSTEM
- Cleaning The Cooling System
- Checking The Coolant Level
- Replacing The Coolant
- ALTERNATOR BELT
- FAN GEARBOX
- HYDRAULIC/HYDROSTATIC SYSTEM
- Checking And Adding Fluid
- Replacing Hydraulic/Hydrostatic Filter
- Replacing Hydraulic Fluid
- Breather Cap
- SPARK ARRESTOR MUFFLER
- TIRE MAINTENANCE
- Wheel Nuts
- Tire Rotation
- Tire Mounting
- FINAL DRIVE TRANSMISSION (CHAINCASE)
- Checking and Adding Oil
- Removing Oil From The Chaincase
- DRIVE BELT
- Adjusting The Drive Belt Equipped With The Fixed Drive Idler
- Adjusting the Drive Belt Equipped With The Spring Loaded Drive Idler
- Replacing The Drive Belt
- LUBRICATION OF THE BOBCAT LOADER
- PIVOT PINS
- BOB–TACH
- Inspection and Maintenance
- REMOTE START SWITCH
- HYDRAULIC SYSTEM
- HYDRAULIC/ HYDROSTATIC SCHEMATICS
- TROUBLESHOOTING
- HYDRAULIC SYSTEM INFORMATION
- LIFT CYLINDER(S)
- Checking The Lift Cylinder(s) For Internal Leakage
- Removal And Installation
- TILT CYLINDER
- Checking The Tilt Cylinder For Internal Leakage
- Removal And Installation
- Rod End Seal Replacement
- HYDRAULIC CYLINDER IDENTIFICATION
- Lift Cylinder Components
- Tilt Cylinder Components
- HYDRAULIC CYLINDERS
- BICS™ VALVE (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)
- Removal
- Lift Arm By–Pass Orifice Disassembly
- Check Valve Disassembly
- Lock Valve Disassembly
- BICS™ Valve Solenoid Disassembly
- BICS™ Valve Solenoid Assembly
- Lock Valve Assembly
- Check Valve Assembly
- Lift Arm By–Pass Orifice Assembly
- Installation
- CONTROL VALVE (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)
- Removal And Installation
- Identification Chart
- Disassembly
- Lift Base End Restrictor Disassembly
- Load Check Valve Disassembly
- Main Relief Valve Disassembly
- Port Relief Valve Disassembly
- Anti–Cavitation Valve Disassembly
- Rubber Boot Disassembly
- Lift Spool And Detent Disassembly
- Tilt Spool And Centering Spring Disassembly
- Auxiliary Spool Disassembly
- Auxiliary Electric Solenoid Disassembly
- Port–Auxiliary Section Disassembly
- Port–Auxiliary Section Assembly
- Auxiliary Electric Solenoid Assembly
- Auxiliary Spool Assembly
- Tilt Spool And Centering Spring Assembly
- Lift Spool And Detent Assembly
- Rubber Boot Assembly
- Anti–Cavitation Valve Assembly
- Port Relief Valve Assembly
- Main Relief Valve Assembly
- Load Check Valve Assembly
- Spool Seal Installation
- Cleaning And Inspection
- CONTROL VALVE (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 5086300001 & Above & S/N 513911001 & Above)
- Removal And Installation
- Identification Chart
- Disassembly And Assembly
- Load Check Valve
- Main Relief Valve
- Port Relief Valve
- Anti–Cavitation Valve
- Rubber Boot
- Lift Spool Detent
- Tilt Centering Spring
- Auxiliary Spool
- Auxiliary Electric Solenoid
- Inspection
- Identification And Installation Of Spool Seal
- MAIN RELIEF VALVE
- Checking
- Adjustment
- Removal And Installation
- MAIN RELIEF VALVE (753H)
- Checking The Dual Pressure (Low Setting)
- Checking The Dual Pressure (High Setting)
- Adjusting The Dual Pressure (Low Setting)
- Adjusting The Dual Pressure (High Setting)
- HYDRAULIC PUMP
- Removal And Installation
- Checking The Output Of The Hydraulic Pump
- Checking The Output Of The HIgh Flow Hydraulic Pump (753H)
- Disassembly And Assembly
- Inspection
- Identification
- Removal And Installation (753H)
- Identification (753H)
- Disassembly And Assembly (753H)
- HYDRAULIC FILTER HOUSING
- HYDRAULIC FLUID RESERVOIR
- CONTROL PEDALS
- Removal And Installation
- Pedal Adjustment
- SELECT VALVE (753H)
- Checking the Main Relief Valve in High Horsepower Select Valve
- Removal and Installation
- Disassembly and Assembly (New Style Valve)
- Solenoid Testing (New Style Valve)
- Disassembly and Assembly (Old Style Valve)
- Solenoid Testing (Old Style Valve)
- CONTROL INTERLOCK LINKAGE (Pedal or Mechanical Hand)
- Removal And Installation
- Adjustment
- LIFT LOCK BY–PASS VALVE
- Removal And Installation (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 & Above)
- Disassembly and Assembly (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & 513911001 & Above)
- Removal And Installation (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)
- Disassembly And Assembly (S/N 508694509 & Above, S/N 512727421 & Above, S/N 515811001 & Above & S/N 516211001 & Above)
- TILT LOCK VALVE
- Removal And Installation (S/N 508694508 & Below,S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 & Above)
- Disassembly And Assembly (S/N 508694508 & Below, S/N 512727420 & Below, S/N 511476001 & Above, S/N 508630001 & Above & S/N 513911001 &Above)
- HYDROSTATIC SYSTEM
- TROUBLESHOOTING
- HYDROSTATIC SYSTEM INFORMATION
- Replenishing Valve Function
- Checking Charge Pressure
- CONTROL PANEL
- Removal And Installation
- Steering Shock Removal And Installation
- Steering Shaft Removal And Installation
- Steering Shaft Disassembly And Assembly
- Steering Lever Removal And Installation
- Rubber Boot Replacement
- STEERING LINKAGE
- Removal And Installation
- Steering Linkage Adjustment
- Steering Neutral Adjustment
- HYDROSTATIC DRIVE MOTOR
- Removal And Installation
- Identification (S/N 512716001 & Above, 508695347 & Below, 511476001 & Above, 508630001 & Above & 513911001 & Above)
- Disassembly And Assembly (S/N 512716001 & Above, 508695347 & Below, 511476001 & Above, 508630149 & Above & 513911001 & Above)
- Inspection
- HYDROSTATIC MOTOR
- Parts Identification – (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)
- Disassembly (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)
- Assembly (S/N 515811001 & Above, 508695348 & Above & 516211001 & Above)
- HYDROSTATIC PUMP
- Removal And Installation
- Identification
- Disassembly And Assembly
- Inspection
- Swashplate Pre–Load (Earlier Models Only)
- DRIVE BELT HOUSING
- SPRING LOADED DRIVE BELT TENSIONER PULLEY
- Removal And Installation
- Identification
- Disassembly
- Assembly
- FIXED DRIVE BELT TENSIONER PULLEY
- Removal And Installation
- Identification
- Disassembly
- Assembly
- Checking Pulley End Play
- OIL COOLER
- DRIVE SYSTEM
- PARKING BRAKE
- Removal And Installation
- Disassembly And Assembly
- PARKING BRAKE DISC
- TRACTION LOCK GUIDES
- CHAINCASE FLUID
- Removing Oil From The Chaincase
- CHAINCASE COVERS
- Center Chaincase Cover Removal And Installation
- Front Chaincase Cover Removal And Installation
- Rear Chaincase Cover Removal And Installation
- MOTOR CARRIER
- Shaft Seal Replacement
- Removal And Installation
- Disassembly
- Assembly
- AXLE SEAL
- AXLE, SPROCKET AND BEARINGS
- DRIVE CHAIN
- MAIN FRAME
- SEAT BAR (W/GAS CYLINDER)
- Removal And Installation
- Assembly
- Compressing The Gas Cylinder
- SEAT BAR (W/COMPRESSION SPRING)
- Removal And Installation
- Assembling Components
- Compression Spring Disassembly And Assembly
- OPERATOR CAB GAS CYLINDER
- Removal And Installation
- Disassembly And Assembly
- OPERATOR CAB
- OPERATOR SEAT
- BOB–TACH
- Removal And Installation
- Bob–Tach Lever And Wedge
- Bob–Tach Stops
- LIFT ARMS
- REAR GRILL
- FUEL TANK
- Removal And Installation
- Fuel Level Sender
- REAR DOOR
- Removal And Installation (Two Piece Door)
- Removal And Installation (One Piece Door)
- Hood Removal And Installation (Two Piece Door)
- Bumper Removal And Installation (Two Piece Door)
- Door Latch Removal And Installation
- Door Latch And Catch Adjustment
- REAR LIGHTS
- Removal and Installation (One Piece Door)
- ELECTRICAL SYSTEM
- ELECTRICAL SCHEMATICS
- TROUBLESHOOTING
- ELECTRICAL SYSTEM INFORMATION
- BATTERY
- Removal And Installation
- Servicing The Battery
- Using A Booster Battery (Jump Starting)
- ALTERNATOR
- Alternator Output Test
- Rectifier (Diode) Test
- Alternator Regulator Test
- Removal And Installation
- Adjusting The Alternator Belt
- Disassembly And Inspection
- Stator Continuity Test
- Stator Ground Test
- Rotor Continuity Test
- Rotor Ground Test
- Rectifier Continuity (Diode) Test
- Assembly
- STARTER (DELCO REMY)
- Checking The Starter
- Parts Identification
- Disassembly And Assembly
- Cleaning And Inspection
- STARTER (DENSO)
- Removal And Installation
- Parts Identification
- Disassembly
- Inspection And Repair
- No Load Test
- Assembly
- STANDARD INSTRUMENT PANEL
- FRONT LIGHTS
- RELAY SWITCHES
- ENGINE SERVICE
- TROUBLESHOOTING
- ENGINE SPEED CONTROL
- Removal And Installation
- Disassembly
- RADIATOR
- ENGINE MUFFLER
- BLOWER HOUSING/FAN GEARBOX
- Removal And Installation
- Tension Pulley Removal And Installation
- Blower Fan Disassembly And Assembly
- FAN GEARBOX
- Identification
- Disassembly
- Assembly
- Checking Backlash
- AIR CLEANER
- ENGINE
- Removal And Installation
- Engine Mount Replacement
- FLYWHEEL
- Removal And Installation
- Flywheel Ring Gear
- ENGINE COMPRESSION
- GLOW PLUGS
- Checking The Glow Plugs
- Removal And Installation
- FUEL INJECTION PUMP
- Checking The Injection Pump
- Adjusting Shut–Off Linkage
- FUEL INJECTION PUMP
- Removal And Installation
- Timing The Injection Pump
- FUEL INJECTOR 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
- Valve Spring
- VALVE CLEARANCE
- ROCKER ARM AND SHAFT
- TIMING GEARCASE COVER
- IDLER GEAR AND CAMSHAFT
- Removal And Installation
- Servicing The Camshaft
- Servicing The Idler Gear And Shaft
- TIMING GEARS
- FUEL CAMSHAFT
- Removal And Installation
- Governor
- CRANKSHAFT GEAR
- 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
- SYSTEMS ANALYSIS
- BICS™ (WITH PRESS TO OPERATE BUTTON)
- Inspecting The BICS™ Controller (Engine STOPPED – Key ON)
- Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED – Key ON)
- Inspecting The Seat Bar Sensor (Engine RUNNING)
- Inspecting The Traction Lock (Engine RUNNING)
- Inspecting The Lift Arm By-Pass Control
- Additional Inspection For Loaders With Advanced Hand Controls
- Troubleshooting Chart
- BICS™ (Without Press To Operate Button)
- Inspecting The BICS Controller (Engine STOPPED –Key ON)
- Inspecting Deactivation Of The Auxiliary Hydraulics System (Engine STOPPED–Key ON)
- Inspecting The Seat And Seat Bar Sensors (EngineRUNNING)
- Inspecting The Traction Lock (Engine RUNNING)
- Inspecting The Lift Arm By–Pass Control
- Maintenance
- Troubleshooting Chart
- BICS™ SYSTEM CONTROLLER
- Troubleshooting Guide
- Removal And Installation
- SEAT BAR SENSOR
- Troubleshooting Guide
- Seat Bar Sensor Test
- Removal And Installation
- BICS™ Controller Seat Bar Sensor Circuit Test
- SEAT SENSOR
- Troubleshooting Guide
- Seat Sensor Test
- Removal And Installation
- BICS™ Controller Seat Sensor Circuit Test
- TRACTION LOCK
- Troubleshooting Guide
- Removal And Installation
- BOSS® DIAGNOSTIC TOOL
- SENDER AND SENSOR
- RPM SENSOR
- MONITOR SERVICE CODES
- TROUBLESHOOTING THE BOSS® & LCD DISPLAY
- BOSS® UNIT
- BOSS® INSTRUMENT PANEL
- ELECTRICAL/HYDRAULIC CONTROLS REFERENCE
- Controls Identification Chart
- SPECIFICATIONS
- SKID STEER LOADER SPECIFICATIONS
- 753 – S/N 515811001 & Above, S/N 516211001 & Above
- PERFORMANCE
- CONTROLS
- ENGINE
- HYDRAULIC SYSTEM
- ELECTRICAL
- DRIVE SYSTEM
- CAPACITIES
- TIRES
- FLOOR PRESSURE
- 753, 753H – S/N 508693001 & Above, S/N 508630001 & Above, S/N 511476001 & Above, S/N 512716001 & Above, S/N 513911001 & Above
- PERFORMANCE
- CONTROLS
- ENGINE
- HYDRAULIC SYSTEM
- ELECTRICAL
- DRIVE SYSTEM
- CAPACITIES
- TIRES
- FLOOR PRESSURE
- ENGINE SPECIFICATIONS
- Fuel Injection 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
- HYDRAULIC CONNECTION SPECIFICATIONS
- O–Ring Face Seal Connection
- Straight Thread O–Ring Fitting
- Tubelines And Hoses
- Flare Fitting
- O–Ring Flare Fitting
- Port Seal Fitting
- TORQUE SPECIFICATIONS FOR LOADER
- HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
- STANDARD TORQUE SPECIFICATIONS FOR BOLTS
- DECIMAL AND MILLIMETER EQUIVALENTS
- U.S. TO METRIC CONVERSION
- ADVANCED HAND CONTROL SYSTEM (AHC)
- WIRING SCHEMATICS W/ADVANCED HAND CONTROL OPTIONS
- AHC COMPONENTS
- TROUBLESHOOTING (AHC)
- ACTUATOR VOLTAGE TEST
- HANDLE CONTROL UNIT TEST
- BOBCAT INTERLOCK CONTROL SYSTEM (BICS™)
- ADVANCED HAND CONTROLS (AHC)
- AHC/PWM CONTROLLER
- Removal And Installation
- Description
- Conditions
- Troubleshooting Chart
- Handle Testing
- Solenoid Coil Testing
- CONTROL HANDLE (ADVANCED HAND CONTROL) (AHC)
- Control Handle Unit Removal And Installation
- Control Unit Connector
- Switch Handle Removal And Installation
- AHC Handle Removal And Installation
- AHC Handle Disassembly And Assembly
- AHC Steering Lever Removal And Installation
- AHC Steering Lever Boot
- Actuators Removal And Installation
- Actuators Disassembly And Assembly
- Components Identification
- Controller Connector And Wire Identification
- AHC/PWM Controller Removal And Installation
- Handle Sensor Removal And Installation
- Handle Sensor Connector
- Switch Handle Removal And Installation
- Control Handle Removal And Installation
- Control Handle Disassembly And Assembly
- Control Lever Removal And Installation
- Control Lever Boot
- Actuators Disassembly And Assembly
- BICS™ VALVE
- Lift Arm By–Pass Orifice
- Check Valve
- Lock Valve
- BICS™ Valve Solenoid
- Removal And Installation
- HYDRAULIC CONTROL VALVE
- Removal And Installation
- Identification Chart
- Disassembly And Assembly
- Load Check Valve
- Lift Base End Restrictor
- Main Relief Valve
- Port Relief Valve (Lift)
- Anti–Cavitation/Port Relief Valve
- Port Relief Valve (Tilt)
- Anti–Cavitation Valve
- Rubber Boot
- Lift And Tilt Spool
- Inspection
- Auxiliary Spool
- Auxiliary Electrical Solenoid
- Spool Seal Installation
- H–Port Auxiliary Section
- SERVICE MANUAL REVISIONS
- 753, 753H–1
- 753/753H–2
- 753/753H–3
- 753/753H–4
- 753/753H–5
- 753/753H-6
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