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Bobcat B250 Backhoe Loader Service Manual (SN 572911001-572999999)

Format: PDF (Printable Document)

File Language: English

File Pages: 782

File Size: 30.37 MB (Speed Download Link)

Brand: Bobcat

Model: B250 Backhoe Loader

Book No: 6903864

Serial No: SN 572911001-572999999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat B250 Backhoe Loader Service Manual (SN 572911001-572999999)

The B250 is a small backhoe loader you'll see trenching for utilities, loading trucks, or doing farm and acreage work. When one of these goes down, the service manual is what you grab if you're actually tearing into the engine, hydraulics, or electrical, not just checking fluids. Around my shop, I reach for this kind of book when I'm chasing a hydraulic issue, sorting wiring, or putting something back together and I don't want to guess. If that's the kind of work you're doing, this is the right level of detail.

What this manual helps you do

  • Trace and diagnose hydraulic problems in the loader and backhoe circuits
  • Check and set pressures in the hydrostatic and implement systems using the correct ports and sequences
  • Follow teardown and reassembly steps for major components like cylinders, axles, and drivetrain parts
  • Diagnose electrical faults using wiring diagrams, connector callouts, and test procedures
  • Replace and adjust linkages, brakes, steering, and other mechanical systems with the right specs and sequences

Who this is for

This is for anyone running or fixing a Bobcat B250 backhoe loader in the serial range 572911001 to 572999999, whether you're a small contractor, rental yard, or owner-operator who turns your own wrenches. If you just need operating tips, safety info, or basic maintenance intervals, you want the operator's handbook instead, not this service manual.

FAQ

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

A: Yes, it's a PDF, and you can zoom in on the wiring diagrams so you can read wire colors and pin labels.

Q: How do I know if it covers my exact machine?

A: If your B250 serial number falls between 572911001 and 572999999, this is the correct manual. If it's outside that range, it may not match.

Q: Is this the right document if I'm doing real repairs, not just checking fluids?

A: Yes, this is the workshop service manual, meant for diagnostics, teardown, and reassembly work.

Bottom line: If you own a Bobcat B250 in that serial range and you're doing your own repairs, this is the manual you want. If you only need how-to-drive info, skip it.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • ALPHABETICAL INDEX
  • CONTENTS
    • FOREWORD
    • SAFETY INSTRUCTIONS
      • Fire Prevention
    • SERIAL NUMBER LOCATION
      • Loader Backhoe Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • BOBCAT LOADER IDENTIFICATION
  • SAFETY & MAINTENANCE
    • LIFTING AND BLOCKING THE LOADER BACKHOE
      • Procedure
    • APPROVED LIFT ARM SUPPORT DEVICE
      • Installing The Approved Lift Arm Support Device
      • Removing The Approved Lift Arm Support Device
    • ENGINE COVER
    • TRANSPORTING THE LOADER BACKHOE
      • Procedure
    • TOWING THE LOADER BACKHOE
      • Procedure
    • AXLE TOE-IN
      • Adjustment
    • SERVICE SCHEDULE
      • Chart
    • AIR CLEANER SERVICE
      • Daily Check
      • Replacing The Air Filter Element
    • ENGINE COOLING SYSTEM
      • Cleaning The Cooling System
      • Checking Coolant Level
      • Coolant Replacement
    • 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 The Oil And Filter
    • HYDRAULIC/HYDROSTATIC SYSTEM
      • Checking And Adding Fluid
      • Cleaning The Cooler
      • Replacing Hydraulic/Hydrostatic Filter
      • Replacing Hydraulic Fluid
    • REAR AXLE
      • Checking Oil Level
      • Draining Oil
    • FRONT AXLE
      • Checking Oil Level
      • Draining Oil
    • BOOM LOCK PIN
      • Engaging And Disengaging The Pin
    • BOB-TACH
      • Inspection And Maintenance
    • ALTERNATOR BELT
      • Adjusting The Alternator Belt
    • LUBRICATING THE LOADER BACKHOE
    • TIRE MAINTENANCE
      • Wheel Nuts
      • Tire Mounting
      • Tire Pressure
    • SWING LOCK PIN
      • Engaging The Swing Lock Pin
  • HYDRAULIC SYSTEM
    • HYDRAULIC/HYDROSTATIC SCHEMATICS
    • HYDRAULIC SYSTEM INFORMATION
      • Glossary Of Hydraulic / Hydrostatic Symbols
      • Troubleshooting
      • Description
    • ARM CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • BOOM CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SWING CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
      • Bushing Removal And Installation
    • BUCKET CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • STABILIZER CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SIDE SHIFT LOCK CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • TILT CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • LIFT CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • STEERING CYLINDER (FRONT)
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • STEERING CYLINDER (REAR)
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • MAIN RELIEF VALVE
      • Description
      • Testing
      • Adjustment
    • PORT RELIEF VALVE (BACKHOE CONTROL VALVE)
      • Testing And Adjusting (Arm Control)
      • Testing And Adjusting (Bucket Control)
      • Testing And Adjusting (Boom Control)
      • Testing And Adjusting (Boom Swing Control)
    • PORT RELIEF VALVE (LOADER CONTROL VALVE)
      • Testing And Adjusting (Bucket Tilt)
      • Testing And Adjusting (Front Auxiliary)
    • LOADER CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inlet/Outlet Valve Section
      • Lift Arm Valve Section
      • Tilt Valve Section
      • Auxiliary Valve Section
    • BACKHOE CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inlet/Outlet Valve Section
      • Arm Valve Section
      • Bucket Valve Section
      • Right Stabilizer Valve Section
      • Left Stabilizer Valve Section
      • Boom Valve Section
      • Boom Swing Valve Section
      • Outlet Valve Section
    • HYDRAULIC FLUID RESERVOIR
      • Removal And Installation
      • Strainer Removal And Installation
    • HYDRAULIC FILTER HOUSING
      • Removal And Installation
      • Disassembly
      • Assembly
    • GEAR PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • STEERING PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • TRAVEL PEDAL
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Neutral Adjustment
    • STEERING VALVE
      • Removal And Installation
      • Description
      • Wheel Alignment Procedure
    • SAPR BRAKE CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • SAPR BRAKE CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • AUXILIARY CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
  • HYDROSTATIC SYSTEM
    • HYDROSTATIC SYSTEM INFORMATION
      • Troubleshooting Chart
      • Replenishing Valve Function
    • OIL COOLER
      • Removal And Installation
      • Parts Identification
    • HYDROSTATIC DRIVE MOTOR
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC PUMP
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC PUMP TESTING AND ADJUSTMENT
      • Hydrostatic Pump Work Sheet
      • Pump Testing
  • DRIVE SYSTEM
    • PARKING BRAKE
      • Lever Removal And Installation
      • Cable Removal And Installation
      • Adjustment
    • BRAKE CALIPER
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Adjustment
    • REAR AXLE
      • Removal
      • Installation
    • AXLE AND DIFFERENTIAL (REAR)
      • Troubleshooting Chart
      • General Information
      • Wheel Hub/Spindle Parts Identification
      • Wheel Hub/Spindle Disassembly
      • Drive Axle Parts identification
      • Drive Axle Disassembly
      • Steering Knuckle Parts identification
      • Steering Knuckle Disassembly
      • Differential Parts identification
      • Differential Disassembly
      • Differential Inspection
      • Pinion Group Parts identification
      • Pinion Group Disassembly
      • Pinion Group Inspection
      • Pinion Group Assembly
      • Differential Assembly
      • Steering Knuckle Assembly
      • Drive Axle Assembly
      • Wheel Hub/Spindle Assembly
    • STEERING ANGLE ADJUSTMENT (REAR AXLE)
      • Adjustment
    • FRONT AXLE
      • Removal
      • Installation
    • AXLE AND DIFFERENTIAL (FRONT)
      • Troubleshooting Chart
      • General Information
      • Wheel Hub/Spindle Parts Identification
      • Wheel Hub/Spindle Disassembly
      • Drive Axle Parts identification
      • Drive Axle Disassembly
      • Steering Knuckle Parts identification
      • Steering Knuckle Disassembly
      • Differential Parts Identification
      • Differential Disassembly
      • Differential Inspection
      • Pinion Group Parts identification
      • Pinion Group Disassembly
      • Pinion Group Inspection
      • Pinion Group Assembly
      • Differential Assembly
      • Steering Knuckle Assembly
      • Drive Axle Assembly
      • Wheel Hub/Spindle Assembly
    • STEERING ANGLE ADJUSTMENT (FRONT AXLE)
      • Adjustment
    • DRIVESHAFT
      • Removal And Installation
    • DROP BOX
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
  • MAIN FRAME
    • OPERATOR CAB
      • Removal And Installation
      • Cab Mount Removal And Installation
    • ENCLOSED CAB
      • Removal And Installation
      • Cab Mount Removal And Installation
    • OPERATOR SEAT
      • Removal And Installation
    • FLOOR PANELS
      • Left Front Panel Removal And Installation
      • Right Front Panel Removal And Installation
      • Rear Panel Removal And Installation
    • GRILL
      • Removal And Installation
    • GRILL FRAME
      • Removal And Installation
    • ENGINE SIDE COVERS
      • Removal And Installation
    • FENDER
      • Removal And Installation
    • ENGINE COVER
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
      • Fuel Fill Screen Removal And Installation
    • LIFT ARMS
      • Removal And Installation
    • BOB-TACH
      • Removal And Installation
      • Bob-Tach Lever And Wedge
      • Pivot Pin Bushing Removal And Installation
    • ARM
      • Removal And Installation
      • Arm Pivot Bushing Removal And Installation
    • BOOM
      • Removal And Installation
      • Boom Pivot Bushing Removal And Installation
    • SWING FRAME
      • Removal And Installation
      • Bushing Removal And Installation
    • X-CHANGE®
      • Removal And Installation
    • BUCKET
      • Backhoe Bucket Teeth Removal And Installation
      • Loader Bucket Teeth Removal And Installation
    • STABILIZER FRAME
      • Removal And Installation
    • FRONT AXLE PIVOT FRAME
      • Removal
      • Installation
      • Bushing Removal And Installation
    • REAR WINDOW
      • Removal And Installation
    • CAB DOOR
      • Removal And Installation
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATIC
    • ELECTRICAL SYSTEM INFORMATION
      • Troubleshooting Chart
      • Description
      • Fuse And Relay Location
    • BATTERY
      • Removal And Installation
      • Servicing The Electrical System
      • Using A Booster Battery (Jump Starting)
    • ALTERNATOR
      • Adjusting The Alternator Belt
      • Description
      • Tests
      • Alternator Output Test
      • Full Field Test
      • Alternator Regulator Test
      • Alternator Regulator Test With Voltmeter
      • Removal And Installation
      • Parts Identification
      • Pulley Removal And Installation
      • Disassembly And Assembly
      • Rotor Continuity Test
      • Stator Continuity Test
      • Rectifier Continuity (Diode) Test
      • Brush Length
    • STARTER
      • Removal And Installation
      • Checking The Starter In The Loader
      • Parts Identification
      • Disassembly
      • Inspection And Repair
      • No Load Test
      • Assembly
    • FRONT LIGHTS
      • Bulb Removal And Installation
      • Housing Removal And Installation
    • TURN INDICATOR LIGHTS (FRONT)
      • Bulb Removal And Installation
    • TURN INDICATOR LIGHTS (REAR)
      • Bulb Removal And Installation
    • CAB LIGHTS
      • Bulb Removal And Installation
      • Housing Removal And Installation
    • FUEL LEVEL SENDER
      • Removal And Installation
      • Testing
    • INSTRUMENT PANEL
      • Removal And Installation
    • FRONT WIPER
      • Removal And Installation
    • REAR WIPER
      • Removal And Installation
  • ENGINE SERVICE
    • TROUBLESHOOTING
      • Chart
    • ENGINE SPEED CONTROL
      • Removal And Installation
      • Cable Removal And Installation
    • MUFFLER
      • Removal And Installation
    • AIR CLEANER
      • Removal And Installation
    • RADIATOR
      • Removal And Installation
    • ENGINE COMPONENTS AND TESTING
      • Checking Engine Compression
      • Checking Glow Plugs
      • Glow Plug Removal And Installation
      • Fuel Shut-Off Solenoid Removal And Installation
      • Checking Fuel Injection Pump
      • Fuel Injection Pump Removal And Installation
      • Fuel Injection Pump Timing
      • Fuel Injector Nozzles Removal And Installation
      • Checking Fuel Injector, Nozzles
      • Thermostat Removal And Installation
      • Water Pump Removal And Installation
    • ENGINE
      • Removal And Installation
      • Mount Replacement
    • RECONDITIONING THE ENGINE
      • Timing Gear Case Cover Removal And Installation
      • Oil Pump Removal And Installation
      • Crankshaft Front Seal Removal And Installation
      • Engine Speed Control Plate Removal And Installation
      • Idle Limit And Fuel Limit Adjustment
      • Exhaust Manifold Removal And Installation
      • Valve Cover Removal And Installation
      • Rocker Arm Removal And Installation
      • Push Rod Removal And Installation
      • Tappet Removal And Installation
      • Water Flange Removal And Installation
      • Cylinder Head Removal And Installation
      • Checking Piston Top Clearance
      • Cylinder Head Disassembly And Assembly
      • Servicing The Cylinder Head
      • Combustion Chamber Removal And Installation
      • Idler Gear Removal And Installation
      • Camshaft Removal And Installation
      • Fuel Camshaft Removal And Installation
      • Oil Pan Removal And Installation
      • Governor Shaft Removal And Installation
      • Governor Fork Lever Removal And Installation
      • Piston Removal And Installation
      • Checking The Piston And Connecting Rod
      • Connecting Rod Alignment
      • Piston Ring Gap
      • Piston Ring Installation
      • Connecting Rod Installation
      • Checking Engine Cylinder Bore
      • Crankshaft Removal And Installation
      • Checking Crankshaft Journal And Block Bearing
      • Checking Crankshaft Journal And Main Bearing
      • Connecting Rod Journal
      • Checking The End Play Of The Crankshaft
      • Crankshaft Alignment
      • Engine Timing Installation
      • Timing Gear Backlash, Idler Gear And Crankshaft
      • Idler Gear And Camshaft Gear
      • Idler Gear And Fuel Camshaft Gear
      • Fuel Camshaft Gear And Governor Shaft Gear
    • FLYWHEEL HOUSING
      • Removal And Installation
    • FLYWHEEL
      • Removal And Installation
      • Ring Gear Removal And Installation
    • RUBBER DRIVE COUPLER
      • Removal And Installation
      • Disassembly
    • TURBOCHARGER
      • Checking
      • Description
      • Removal And Installation
  • HEATER
    • COMPONENTS
      • Identification
    • HEATER FAN
      • Removal And Installation
    • HEATER UNIT
      • Removal And Installation
      • Disassembly And Assembly
  • SPECIFICATIONS
    • LOADER BACKHOE SPECIFICATIONS
      • Loader Backhoe Dimensions
      • Backhoe Rated Load Capacity (Per SAE J31)
      • Loader Performance
      • Backhoe Performance
      • Controls
      • Drive System
      • Engine
      • Electrical
      • Capacities
      • Tires
    • ENGINE SPECIFICATIONS
      • Engine Compression
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Rocker Arms
      • Camshaft
      • Cylinders
      • Piston Rings
      • Pistons
      • Crankshaft
      • Oil Pump
      • Thermostat
      • Grinding Specifications for the Crankshaft
    • LOADER BACKHOE TORQUE
      • Specifications
    • TORQUE SPECIFICATIONS FOR BOLTS
      • Torque For General Metric Bolts
    • HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
      • Specifications
    • CONVERSIONS
      • Decimal And Millimeter Equivalents
      • U.S. To Metric Conversion
  • SMR
    • B250-1
    • B250-2

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