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Bobcat 225 Excavator Service Manual (SN 508311001-508311999)

Format: PDF (Printable Document)

File Language: English

File Pages: 318

File Size: 10.81 MB (Speed Download Link)

Brand: Bobcat

Model: 225 Excavator

Book No: 6720347

Serial No: SN 508311001-508311999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 225 Excavator Service Manual (SN 508311001-508311999)

A Bobcat 225 is a small older excavator that spends its life trenching, loading trucks, and digging around utilities in tight spots. The people who reach for this service manual are the ones actually turning wrenches: field techs like me working out of a truck, shop mechanics doing teardowns, and owners trying to keep an old machine earning instead of waiting on parts runs. They want wiring info, hydraulic specs, and step-by-step repair procedures so they don't guess, break something expensive, or waste a day on callbacks.

What this manual helps you do

  • Diagnose hydraulic problems, check pressures with gauges, and trace weak or slow functions on the 225 excavator.
  • Follow step-by-step procedures to remove, disassemble, and reinstall components like cylinders, pumps, swing motors, and drive motors.
  • Trace and repair electrical and starting issues using wiring diagrams and connector callouts instead of chasing wires blindly.
  • Adjust linkages, controls, and track components after repairs so the machine digs straight and tracks correctly.
  • Verify reassembly with torque references and test procedures before you send the machine back into the dirt.

Who this is for

This manual is for anyone working on a Bobcat 225 Excavator with serial numbers in the 508311001-508311999 range: small contractors, owner-operators, rental fleets, and field or shop techs. If you just need operating instructions, daily checks, or safety info, 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 clearly?

A: These manuals are usually supplied as searchable PDFs and the wiring diagrams are readable when you zoom in on a laptop or tablet.

Q: My 225 has a different serial number. Will this still match my machine?

A: No, this one is written for 225 units in the 508311001-508311999 range. If your plate is outside that range, you should look for the correct serial group.

Q: I just want to do basic maintenance. Is this the right document?

A: For simple fluids and filters, the operator's manual or a maintenance manual is easier. This service manual is better if you're doing real repairs or diagnostics.

Bottom line: If you own or service a Bobcat 225 Excavator in that exact serial range and you're doing your own repairs, this is the yes answer. If your serial tag doesn't match, it's a no.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • CONTENTS
  • FOREWORD
    • SAFETY INSTRUCTIONS
    • SERIAL NUMBER LOCATIONS
    • HYDRAULIC EXCAVATOR SERIAL NUMBER
    • ENGINE SERIAL NUMBER
    • DELIVERY REPORT
    • HYDRAULIC EXCAVATOR IDENTIFICATION
  • PREVENTIVE MAINTENANCE
    • SERVICE SCHEDULE
    • ENGINE COVER
      • Procedure
    • AIR CLEANER SERVICE
      • Replacing The Filter Element
    • FUEL SYSTEM
      • Fuel Specifications
      • Fuel System Service
    • ENGINE LUBRICATION SYSTEM
      • Checking The Engine Oil
      • Engine Oil And Filter Replacement
    • COOLING SYSTEM
      • Coolant Level
      • Coolant Replacement
    • HYDRAULIC SYSTEM
      • Checking And Adding Fluid
      • Replacement Of The Hydraulic Filters
      • Hydraulic Reservoir
    • USING A BOOSTER BATTERY (JUMP STARTING)
      • Procedure
    • LUBRICATION OF THE HYDRAULIC EXCAVATOR
      • Procedure
    • FINAL DRIVE CASE
      • Checking Oil Level
  • HYDRAULIC SECTION
    • HYDRAULIC SCHEMATICS
    • HYDRAULIC SERVICE INFORMATION
      • Description
      • Checking The Control Valve Relief Valves
      • Checking The Locking Lever Relief Valve
      • With Locking Lever Up (By–Passing Relief Valve)
      • Checking The Auxiliary Relief Valve
    • HYDRAULIC PUMP
      • Removal And Installation
      • Disassembly
      • Assembly
    • HYDRAULIC CONTROL VALVE
      • Removal And Installation
    • CONTROL VALVE
      • Disassembly And Assembly
      • Relief Valve Pressure Setting Adjustment
      • Main Relief Valve
      • Work Port Relief Valves
    • HYDRAULIC RESERVOIR
      • Removal And Installation
      • Suction Filter
    • BOOM CYLINDER
      • Removal And Installation
    • DIPPERSTICK CYLINDER
      • Removal And Installation
    • BUCKET CYLINDER
      • Removal And Installation
    • BLADE CYLINDER
      • Removal And Installation
    • BOOM SWING CYLINDER
      • Removal And Installation
    • HYDRAULIC CYLINDER
      • Disassembly
      • Assembly
    • SWING CYLINDER LOCK VALVE
      • Parts Identification
      • Disassembly
      • Assembly
    • SOLENOID VALVE
      • Parts Identification
      • Disassembly
      • Assembly
    • HYDRAULIC FILTER
      • Removal And Installation
      • Untitled
  • DRIVE SECTION
    • HYDRAULIC CONTROL LEVERS
      • Swing/Dipperstick Control Lever
      • Boom/Bucket Control Lever
      • Disassembly And Assembly
    • THROTTLE LEVER
      • Removal And Installation
    • BLADE CONTROL LEVER
      • Removal And Installation
    • CONTROL LOCKING ARM
      • Removal And Installation
    • PANEL LIFT CYLINDER
      • Removal And Installation
    • LOCKING LEVER VALVE
      • Removal And Installation
    • LOCKING LEVER CABLE
      • Removal And Installation
    • CONTROL PANEL BASE
      • Removal And Installation
    • FOOT PEDAL AND STEERING LEVER LINKAGE
      • Removal And Installation
    • STEERING LEVERS
      • Removal And Installation
    • FINAL DRIVE
      • Removal And Installation
    • DRIVE MOTOR
      • Disassembly
      • Assembly
    • FINAL DRIVE CASE
      • Check Oil Level
      • Draining Final Drive Case
  • UPPER WORKS AND SWING SECTION
    • SWING MOTOR
      • Removal And Installation
    • SWING MOTOR ASSEMBLY
      • Brake Valve
        • Parts Identification
        • Disassembly
        • Assembly
      • Relief Valve
        • Disassembly
        • Assembly
        • Adjustment for Model 225
      • Piston Housing
        • Parts Identification
        • Disassembly
        • Assembly
      • Reduction Gear
        • Parts Identification
        • Disassembly
        • Assembly
    • UPPER WORKS
      • Removal And Installation
    • SWING CIRCLE GEAR
      • Removal And Installation
    • CENTER SWIVEL JOINT
      • Removal And Installation
      • Disassembly And Assembly
  • MAIN FRAME AND TRACKS
    • ENGINE COVER
      • Removal And Installation
    • FLOOR PANELS
      • Removal And Installation
    • SEAT AND MOUNTING FRAME
      • Removal And Installation
    • SWING MOTOR COVER
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
    • BUCKET
      • Removal And Installation
    • DIPPERSTICK
      • Removal And Installation
    • BOOM
      • Removal And Installation
    • BOOM SWING BRACKET
      • Removal And Installation
    • BLADE
      • Removal And Installation
    • TRACK
      • Track Tension Adjustment
    • TRACK FRAME
      • Disassembly And Assembly
    • TRACK IDLER
      • Parts Identification
      • Disassembly
      • Assembly
    • RUBBER TRACK IDLER
      • Parts Identification
      • Disassembly
      • Assembly
    • TOOL BOX
      • Removal And Installation
    • TRACK ROLLER
      • Parts Identification
      • Disassembly
      • Assembly
    • RUBBER TRACK ROLLER
      • Parts Identification
      • Disassembly
      • Assembly
    • ROPS WINDOWS
      • Front Window Removal
      • Side Window Removal
  • ELECTRICAL SYSTEM
    • ELECTRICAL SCHEMATICS
    • TROUBLESHOOTING
      • Chart
    • ELECTRICAL SYSTEM
      • Description
      • Fuses
      • Electrical System Service
    • BATTERY
      • Checking The Battery
      • Removal And Installation
    • ALTERNATOR
      • Belt Adjustment
      • Removal And Installation
    • STARTER
      • Removal And Installation
      • Disassembly And Assembly
      • Cleaning And Inspection
    • FUEL LEVEL SENDER
      • Removal And Installation
      • Checking
    • DISPLAY MODULE
      • Removal And Installation
    • INSTRUMENT PANEL
      • Removal And Installation
      • Testing And Troubleshooting
      • Engine Temperature Circuit Test (display module installed)
      • Testing The Display Panel
      • Fuel Level Circuit Test (display module installed)
      • Testing The Display Panel
      • Fuel Level Sender
      • Engine Oil Pressure Circuit Test (display module installed)
      • Testing The Display Panel
      • Battery Charge Circuit Test (display module installed)
      • Glow Plug Circuit Test (display module installed)
      • Engine Temperature Circuit Test (display module removed)
      • Fuel Level Circuit Test (display module removed)
      • Engine Oil Pressure Circuit Test (display module removed)
      • Battery Charge Circuit Test (display module removed)
      • Glow Plug Circuit Test (display module removed)
    • VOLTAGE REGULATOR/GLOW PLUG TIMER
      • Removal And Installation
    • WIPER MOTOR AND SWITCH
  • ENGINE SERVICE
    • TROUBLESHOOTING
      • Chart
    • VALVE CLEARANCE
      • Adjustment
    • ENGINE COMPRESSION
      • Checking
    • FUEL FILTER
      • Final Filter
      • In–Line Filter
    • ELECTRIC FUEL PUMP
      • Removal And Installation
    • FUEL INJECTION PUMP
      • Checking The Injection Pump
      • Removal And Installation
      • Timing The Injection Pump
    • FUEL INJECTOR NOZZLES
      • Removal And Installation
      • Checking The Injector Nozzle
    • GLOW PLUGS
      • Removal And Installation
      • Checking The Glow Plug
    • RADIATOR
      • Removal And Installation
    • MUFFLER
      • Removal And Installation
    • AIR CLEANER
      • Removal And Installation
    • ENGINE
      • Removal And Installation
    • ENGINE FLYWHEEL
      • Removal And Installation
      • Flywheel Ring Gear
    • CYLINDER HEAD
      • Removal
      • Disassembly
      • Servicing The Cylinder Head And Valves
      • Checking Valve Springs
      • Checking Rocker Arm And Shaft
      • Assembling The Cylinder Head
      • Installation
    • TIMING GEAR COVER
      • Removal And Installation
    • TIMING GEAR, CAMSHAFT AND OIL PUMP
      • Removal And Installation
      • Oil Pump Service
      • Servicing The Camshaft
    • CRANKSHAFT AND PISTONS
      • Removal And Installation
      • Crankshaft Service
      • Servicing The Connecting Rods And Pistons
    • CYLINDER LINERS
      • Checking The Cylinder Liners
      • Cylinder Liner Installation
    • WATER PUMP
      • Removal And Installation
      • Disassembly And Assembly
  • TECHNICAL DATA
    • EXCAVATOR SPECIFICATIONS
      • Machine Dimensions
      • Performance And Operation
      • Engine
      • Hydraulic System
      • Swing System
      • Hydraulic Cylinders
      • Drive System
      • Brakes
      • Track Shoes
      • Capacities
      • Digging Force
    • ENGINE SPECIFICATIONS
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Rocker Arms
      • Camshaft
      • Cylinder
      • Piston Rings
      • Pistons
      • Crankshaft
      • Oil Pump
      • Engine Oil Specifications
      • Engine Bolt Torque
      • Re–Grinding The Crankshaft
    • FUEL, COOLANT AND LUBRICANTS
      • Chart
    • OIL SPECIFICATIONS
      • Description
  • SERVICE MANUAL REVISION
    • 225-1
    • 225-2
    • 225-3
    • 225-4
    • 225-5
    • 225-6
    • 225-7
    • 225-8

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