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Bobcat 225 Excavator Service Manual (SN 508312001-508399999)

Format: PDF (Printable Document)

File Language: English

File Pages: 328

File Size: 12.72 MB (Speed Download Link)

Brand: Bobcat

Model: 225 Excavator

Book No: 6720874

Serial No: SN 508312001-508399999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat 225 Excavator Service Manual (SN 508312001-508399999)

On a real job, a Bobcat 225 is a small excavator doing trenching, footings, utility digs, and farm work where you'd maybe otherwise park a small Deere or Cat mini. People grab the service manual when the machine is out of warranty and they're chasing a hydraulic issue, electrical gremlin, or doing real teardown work, not just checking fluids. Around my shop, this is what you pull when you need specs, test procedures, and the right order to pull something apart and put it back together.

What this manual helps you do

  • Diagnose weak digging, slow functions, or drift by checking hydraulic pressures and doing flow and leakage tests
  • Trace and troubleshoot electrical problems using wiring diagrams and step-by-step checks
  • Follow teardown and reassembly procedures for pumps, control valves, cylinders, and swing or travel components
  • Replace and adjust engine-related components with correct sequences and spec references
  • Set and verify machine adjustments like control linkages and travel straightness after repairs

Who this is for

This is for anyone working on a Bobcat 225 excavator in the serial range 508312001 through 508399999: small contractors, owner-operators, shop mechanics, and rental fleets. If you just need basic operating instructions or daily maintenance points, you want the operator's handbook instead, not this manual.

FAQ

Q: Is this a searchable PDF and are the wiring diagrams readable?

A: These manuals are normally supplied as searchable PDFs, and the wiring diagrams are clear enough to zoom in and trace circuits on a laptop or tablet.

Q: How do I know if it matches my machine?

A: Check your serial plate. If your 225 falls between 508312001 and 508399999, this is the right service manual series for it.

Q: Is this what I need for full repair work, or do I need something else?

A: For real repair work and diagnostics, this is the correct document. For parts ordering, you'd also want the separate parts catalog.

Bottom line: If your Bobcat 225's serial number lands in that range and you're doing your own repairs, this is the right service manual. If your serial is outside that range, skip it.

📘 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
      • Fuel Filters (S/N 12648 & Above)
    • 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 Filter
      • Hydraulic Reservoir
    • USING A BOOSTER BATTERY (Jump Starting)
      • Procedure
    • LUBRICATION OF THE HYDRAULIC EXCAVATOR
      • Procedure
    • FINAL DRIVE CASE
      • Checking Oil Level
      • Draining Final Drive Case
      • Untitled
  • HYDRAULIC SECTION
    • HYDRAULIC SCHEMATICS
    • HYDRAULIC SERVICE INFORMATION
      • Description
      • Checking the Relief Valves
    • HYDRAULIC PUMP
      • Disassembly & Assembly
      • Parts Identification
    • HYDRAULIC CONTROL VALVE (6 Spool)
      • Removal and Installation
      • Parts Identification
      • Disassembly and Assembly
        • Disassembly
        • Inlet Section (R.H. and L.H. Travel) Disassembly
        • Inlet Section (R.H. and L.H. Travel) Assembly
        • Valve Sections (Boom, Bucket & Arm) Disassembly
        • Valve Sections (Boom, Bucket & Arm) Assembly
        • Valve Sections (Auxiliary) Disassembly
        • Valve Sections (Auxiliary) Assembly
      • Port Relief Valve
        • Disassembly
        • Assembly
        • Adjustment Procedure
      • Main Relief Valve
        • Disassembly
        • Assembly
        • Adjustment Procedure
    • HYDRAULIC CONTROL VALVE (3 Spool)
      • Removal and Installation
      • Parts Identification
      • Disassembly
      • Inlet Section (Housing Swing)
        • Disassembly
        • Assembly
      • End Cover (Boom Swing) and Valve Section (Blade) Disassembly
      • End Cover (Boom Swing) and Valve Section (Blade) Assembly
      • Load Check Block
        • Disassembly
        • Assembly
      • Build–Up Valve
        • Assembly
      • Main Relief Valve
        • Disassembly
        • Assembly
      • Main Relief Valve Adjustment Procedure
    • PRESSURE REDUCING VALVE WITHACCUMULATOR
      • Removal and Installation
      • Parts Identification
    • ACCUMULATOR / VALVE
      • Disassembly
      • Assembly
      • Setting the Safety Relief Valve
    • ACCUMULATOR
      • Charging
    • PORT BLOCK
      • Removal and Installation
    • OIL COOLER
      • Removal and Installation
    • HYDRAULIC RESERVOIR
      • Removal and Installation
    • HYDRAULIC FILTER ASSEMBLY
      • Removal and Installation
    • BOOM CYLINDER
      • Removal and Installation
    • BOOM DROP VALVE (NORDIC–OPTION)
      • Removal and Installation
    • ARM CYLINDER
      • Removal and Installation
    • BUCKET CYLINDER
      • Removal and Installation
    • BLADE CYLINDER
      • Removal and Installation
    • BOOM SWING CYLINDER
      • Removal and Installation
    • HYDRAULIC CYLINDER
      • Disassembly
      • Assembly
    • JOYSTICK CONTROL CHANGE
  • DRIVE SYSTEM
    • LEFT CONSOLE
      • Lockout Valve Removal and Installation
      • Cylinder Removal and Installation
      • Removal and Installation
    • LEFT JOYSTICK
      • Removal and Installation
      • Parts Identification
    • JOYSTICK
      • Disassembly and Assembly
    • CONTROL LEVERS
      • Removal and Installation
      • Throttle Lever
      • Blade Lever
    • RIGHT CONSOLE
      • Removal and Installation
      • Parts Identification
    • FOOT PEDAL AND STEERING LEVERS
      • Removal and Installation
      • Bushing Removal and Installation
    • FINAL DRIVE
      • Removal and Installation
      • Parts Identification
    • DRIVE MOTOR
      • Disassembly
      • Assembly
    • FINAL DRIVE CASE
      • Check Oil Level
      • Draining Final Drive Case
  • UPPER WORKS AND SWING SYSTEM
    • SWING MOTOR
      • Removal and Installation
      • Parts Identification
    • SWING GEAR BOX ASSEMBLY(WITH OR WITHOUT BRAKES)
      • Disassembly
      • Assembly
    • SWING GEAR BRAKE (NORDIC OPTION)
      • Solenoid Removal and Installation
    • UPPER WORKS AND SWING CIRCLE GEAR
      • Removal and Installation
      • Swing Bearing Removal
      • Swing Bearing Installation
      • Alignment Pins (Not Threaded)
    • CENTER SWIVEL JOINT
      • Removal and Installation (through upper access removal)
      • Parts Identification
  • MAIN FRAME AND TRACKS
    • ENGINE COVER
      • Removal and Installation
    • SEAT AND MOUNTING FRAME
      • Removal and Installation
    • NORDIC SEAT AND MOUNTING FRAME (OPTIONAL)
      • Removal and Installation
    • CENTER FLOOR PANEL
      • Removal and Installation
    • SWING MOTOR COVER
      • Removal and Installation
    • REAR FLOOR PANEL
      • Removal and Installation
    • INSPECTION COVER
      • Removal and Installation
    • TOOL BOX
      • Removal and Installation
    • FUEL TANK
      • Removal and Installation
    • BUCKET
      • Removal and Installation
    • ARM
      • Removal and Installation
    • BOOM
      • Removal and Installation
    • BOOM SWING BRACKET
      • Removal and Installation
    • BLADE
      • Removal and Installation
    • TRACK
      • Track Tension Adjustment
      • Removal and Installation
    • TRACK FRAME
      • Disassembly and Assembly
    • TRACK IDLER
      • Parts Identification
      • Disassembly
      • Assembly
    • TRACK IDLER
      • Parts Identification
      • Disassembly
      • Assembly
    • TRACK ROLLER
      • Parts Identification
      • Disassembly
      • Assembly
      • Parts Identification
      • Disassembly
      • Assembly
      • ROPS
      • Removal and Installation
    • NORDIC CAB (OPTIONAL)
      • Removal and Installation
    • ROPS WINDOW
      • Front Window Removal
      • Side Window Removal
      • Installation
    • ELECTRICAL SYSTEM
    • ELECTRICAL SCHEMATICS
    • TROUBLESHOOTING
    • 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
    • INSTRUMENT PANEL
      • Removal and Installation
    • DOME LIGHT
      • Removal and Installation
    • CAB CONTROL PANEL
      • Removal and Installation
    • FRONT LIGHTS
      • Removal and Installation
      • Lamp Replacement
    • CONSOLE SWITCHES
      • Removal and Installation
    • WINDSHIELD WIPER
      • Removal and Installation
    • WINDSHIELD WASHER (NORDIC OPTION)
      • Removal and Installation
      • Hose Removal
    • ENGINE COVER LIGHT (NORDIC OPTION)
      • Removal and Installation
  • ENGINE SERVICE
    • TROUBLESHOOTING
    • VALVE CLEARANCE
      • Adjustment
    • ENGINE COMPRESSION
      • Checking
    • ELECTRIC FUEL PUMP
      • Removal and Installation
      • In–Line Filter (Used on Early Model Excavators Only)
    • FUEL FILTER
      • Final Filter (S/N 12001–12647)
      • Fuel Filter (S/N 12648 & Above) (With Water Drain Valve)
    • FUEL INJECTION PUMP
      • Checking the Injection Pump
      • Removal and Installation
      • Timing the Injection Pump
    • FUEL INJECTION NOZZLES
      • Removal and Installation
    • GLOW PLUGS
      • Removal and Installation
      • Checking the Glow Plug
    • RADIATOR
      • Removal and Installation
    • FAN SHIELD (NORDIC OPTION)
      • 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
      • Removing the Cylinder Head
      • Disassembly of the Cylinder Head
      • Servicing the Cylinder Head and Valves
      • Checking Valve Springs
      • Checking Rocker Arm and Shaft
      • Assembling the Cylinder Head
      • Installing the Cylinder Head
    • 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
  • SPECIFICATIONS
    • HYDRAULIC EXCAVATOR SPECIFICATIONS
      • Machine Dimensions
      • Lifting Capacity With Blade Off Ground
      • OPERATION & PERFORMANCE
      • ENGINE
      • HYDRAULIC SYSTEM
      • SWING SYSTEM
      • HYDRAULIC CYLINDERS
      • DRIVE SYSTEM
      • UNDERCARRIAGE
      • TRACK
      • CAPACITIES
      • DIGGING FORCE
    • ENGINE SPECIFICATIONS
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Rocker Arms
      • Camshaft
      • Cylinders
      • Piston Rings
      • Pistons
      • Crankshaft
      • Oil Pump
      • Engine Oil
      • Specifications
      • ENGINE TORQUE
      • Re–Grinding The Crankshaft
    • FUEL, COOLANT AND LUBRICANTS
    • OIL SPECIFICATIONS
      • Description
  • SERVICE MANUAL REVISION
    • 225-1
    • 225-2
    • 225-3
    • 225-4
    • 225-5
    • 225-6
    • 225-7
    • 225-8
    • 225-9
    • 225-10
    • 225-11

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