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Bobcat B900 Backhoe Loader Service Manual (SN B4UB11001-B4UB99999)

Format: PDF (Printable Document)

File Language: English

File Pages: 451

File Size: 13.87 MB (Speed Download Link)

Brand: Bobcat

Model: B900 Backhoe Loader

Book No: 7371580

Serial No: SN B4UB11001-B4UB99999

Type of Document: Service Manual

Categories: ,

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Bobcat B900 Backhoe Loader Service Manual (SN B4UB11001-B4UB99999)

A B900 backhoe loader is the kind of machine you park by the barn and use for everything from cleaning corrals to trenching water lines and loading gravel. When something quits moving, starts leaking, or an electrical gremlin shows up on a Saturday, this is the manual you reach for. It's written for people who actually turn wrenches and need the right sequence, test points, and specs in front of them. You're not trying to learn how to drive it, you're trying to get it back to work before Monday.

What this manual helps you do

  • Diagnose hydraulic problems in the loader and backhoe circuits, then trace them to valves, pumps, or cylinders
  • Check and set adjustments on linkages, brakes, and steering so the machine runs straight and digs clean
  • Follow teardown and reassembly steps on major components like the front axle, boom, and swing system
  • Troubleshoot electrical faults with wiring diagrams when lights, starters, or safety switches act up
  • Replace seals, hoses, and wear parts with the right order of disassembly so you don't create extra work

Who this is for

This manual is for owners and mechanics working on a Bobcat B900 Backhoe Loader with serial numbers in the B4UB11001 to B4UB99999 range. If you just want basic controls, fluid types, or daily checks, you want the operator's handbook instead, not this shop manual.

FAQ

Q: Is this a searchable PDF with clear wiring diagrams?

A: Yes, these manuals are usually searchable PDFs and the wiring diagrams are made to be zoomed in so you can read wire colors and pin labels.

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

A: Check your B900 serial number plate. If it falls between B4UB11001 and B4UB99999, this is the right service manual series.

Q: I'm just doing routine maintenance. Is this overkill?

A: For simple oil and filter changes, it's more than you need. For real repairs, diagnostics, and rebuild work, this is the right document.

Bottom line, if your B900's serial number is in that B4UB11001-B4UB99999 range and you plan to fix or rebuild anything, this is the manual you want.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • CONTENTS
  • FOREWORD
    • FOREWORD
    • SAFETY INSTRUCTIONS
      • Before Operation
      • Safe Operation Is The Operator’s Responsibility
      • Safe Operation Needs A Qualified Operator
      • Fire Prevention
    • PUBLICATIONS AND TRAINING RESOURCES
    • SERIAL NUMBER LOCATION
      • Backhoe Loader Serial Number
      • Engine Serial Number
    • DELIVERY REPORT
    • BOBCAT BACKHOE LOADER IDENTIFICATION
  • SAFETY AND MAINTENANCE
    • SERVICE SCHEDULE
      • Maintenance Intervals
      • Inspection Checkbook
    • SECURING THE STABILIZERS IN THE RAISED POSITION
      • Installing The Stabilizer Supports
    • TOWING THE BACKHOE LOADER
      • Procedure
    • TRANSPORTING THE BACKHOE LOADER ON A TRAILER
      • Loading And Unloading
      • Fastening
    • STOPPING THE ENGINE AND LEAVING THE BACKHOE LOADER
      • Procedure
    • BACKHOE LOADER STORAGE AND RETURN TO SERVICE
      • Storage
      • Return To Service
    • OPERATOR CAB
      • Description
      • Cab Doors
      • Windshield Wiper
      • Side Windows
      • Rear Window
    • EMERGENCY EXIT
      • Side Windows
      • Rear Window
    • BACKHOE SWING / BOOM LOCK
      • Locking And Unlocking The Backhoe Boom / Swing Lock
    • APPROVED LIFT ARM SUPPORT DEVICE
      • Description
      • Installing The Approved Lift Arm Support Device
      • Removing The Approved Lift Arm Support Device
    • TIRE MAINTENANCE
      • Wheel Nuts
      • Rotating The Tires
      • Wheel Replacement
      • Mounting The Tires
      • Tire Pressure
    • ENGINE COVER
      • Opening And Closing The Engine Cover
    • GRILL
      • Removal And Installation
    • ENGINE AIR CLEANER
      • Description
      • Cleaning The Outer Air Filter
      • Replacing The Air Filters
      • Cleaning The Air Pre-Cleaner
    • FUEL SYSTEM
      • Fuel Specifications
      • Filling The Fuel Tank
      • Draining The Fuel Tank
      • Fuel Filters
    • ENGINE LUBRICATION SYSTEM
      • Engine Oil Chart
      • Checking And Adding Engine Oil
      • Removing And Replacing Oil And Filter
    • ENGINE COOLING SYSTEM
      • Cleaning The Cooling System
      • Checking The Coolant Level
      • Removing And Replacing Coolant
    • HYDRAULIC SYSTEM
      • Hydraulic Fluid Chart
      • Checking And Adding Hydraulic Fluid
      • Removing And Replacing The Hydraulic Filters
      • Removing And Replacing The Hydraulic Fluid
    • REAR DRIVE AXLE
      • Cleaning The Rear Axle Breather
      • Differential
      • Reduction Gear
    • TRANSMISSION
      • Checking And Adding Oil
      • Removing And Replacing Oil
      • Replacing The Filter Element
    • ALTERNATOR AND FAN BELT
      • Belt Checking
      • Belt Adjustment
      • Belt Replacement
    • ATTACHMENT COUPLING SYSTEMS
      • Loader Attachment Coupling Inspection And Maintenance
      • Backhoe Attachment Coupling Inspection And Maintenance
    • BUCKET TEETH
      • Removal And Installation
    • LUBRICATING THE BACKHOE LOADER
      • Lubrication Locations
      • Lubricating The Stabilizer Wear Pads
  • HYDRAULIC SYSTEM
    • HYDRAULIC / HYDROSTATIC SCHEMATICS
    • HYDRAULIC SYSTEM INFORMATION
      • Glossary Of Hydraulic / Hydrostatic Symbols
      • Troubleshooting Chart
      • Tightening Procedures
      • Test Point Location
      • General Maintenance Guidelines
    • SERVICE BRAKE SYSTEM
      • Description
      • Checking And Adding Brake Oil
      • Air Bleeding Procedure
      • Brake Pedal And Cylinders Removal And Installation
    • STEERING WHEEL AND CONSOLE
      • Removal And Installation
    • LOADER CONTROLS
      • Removal And Installation
    • BACKHOE AND STABILIZER CONTROLS
      • Removal And Installation
    • HYDRAULIC TANK
      • Removal And Installation
    • HYDRAULIC PUMP
      • Description
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Testing
    • STEERING VALVE
      • Removal And Installation
      • Parts Identification
    • LOADER CONTROL VALVE
      • Testing And Adjusting
      • Removal And Installation
      • Parts Identification
    • BACKHOE CONTROL VALVE
      • Testing And Adjusting
      • Removal And Installation
      • Parts Identification
    • RETURN LINE CHECK VALVE
      • Removal And Installation
      • Parts Identification
    • MAIN RELIEF VALVE
      • Testing
    • BACKHOE DISTRIBUTOR BLOCK
      • Removal And Installation
    • STEERING CYLINDER
      • Removal And Installation
      • Parts Identification
    • LOADER LIFT CYLINDERS
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • LOADER TILT CYLINDERS
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • BACKHOE SWING CYLINDERS
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • BACKHOE BOOM CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • BACKHOE ARM CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • BACKHOE BUCKET CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • STABILIZER CYLINDERS
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • SIDE SHIFT LOCK CYLINDERS
      • Removal And Installation
  • DRIVE SYSTEM
    • DRIVE SYSTEM INFORMATION
      • Troubleshooting Chart
    • GEAR SHIFT LEVER
      • Removal And Installation
    • PARKING BRAKE
      • Removal And Installation
    • ACCELERATOR PEDAL AND ENGINE SPEED CONTROL LEVER
      • Removal And Installation
    • DRIVE SHAFT
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • TRANSMISSION
      • Testing
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • FRONT AXLE
      • Removal And Installation
      • Parts Identification
    • REAR DRIVE AXLE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Disassembly And Assembly
  • MAIN FRAME
    • FLOOR MAT
      • Removal And Installation
    • OPERATOR SEAT
      • Removal And Installation
    • FRONT INSTRUMENT PANEL
      • Removal And Installation
    • SIDE INSTRUMENT PANEL
      • Removal And Installation
    • FENDERS
      • Removal And Installation
    • REAR WINDOW
      • Removal And Installation
    • OPERATOR CAB
      • Removal And Installation
      • Cab Mount Removal And Installation
    • COUNTERWEIGHT
      • Removal And Installation
    • GRILL FRAME
      • Removal And Installation
    • ENGINE COVER
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
    • LOADER
      • Removal And Installation
    • BACKHOE
      • Removal And Installation
    • SWING FRAME
      • Removal And Installation
    • STABILIZERS
      • Removal And Installation
      • Stabilizer Wear Pads Removal And Installation
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATICS
    • ELECTRICAL SYSTEM INFORMATION
      • Glossary Of Electrical Symbols
      • Troubleshooting Chart
      • Description
      • Fuses And Relays Location / Identification
      • Fuse And Relay Harness Connectors
      • Cab Upper Harness Connectors
      • Cab Lower Harness Connectors
      • Engine Harness Connectors
      • Rear Harness Connectors
      • Battery Harness Connectors
    • BATTERY
      • Battery Maintenance
      • Maintaining Battery Charge Level
      • Battery Service During Machine Storage
      • Battery Testing
      • Battery Charging
      • Using A Booster Battery (Jump Starting)
      • Removal And Installation
      • Adding Water To The Battery
      • Battery Disconnect Switch
    • ALTERNATOR
      • Belt Checking
      • Belt Adjustment
      • Belt Replacement
    • FUEL LEVEL SENDER
      • Testing
      • Removal And Installation
    • WINDSHIELD WIPER MOTOR
      • Removal And Installation
    • HORN
      • Removal And Installation
    • BACK-UP ALARM
      • Removal And Installation
    • LIGHTS
      • Removal And Installation
    • FRONT INSTRUMENTATION
      • Removal And Installation
    • SIDE INSTRUMENTATION
      • Removal And Installation
    • CAB FAN
      • Removal And Installation
    • RADIO
      • Removal And Installation
    • SPEAKERS
      • Removal And Installation
  • ENGINE SERVICE
    • ENGINE INFORMATION
      • Description
      • Servicing The Engine
      • Troubleshooting Chart
    • AIR CLEANER
      • Removal And Installation
    • EXHAUST PIPE
      • Removal And Installation
    • EXHAUST MUFFLER
      • Removal And Installation
    • RADIATOR
      • Removal And Installation
    • FAN
      • Removal And Installation
    • ENGINE
      • Removal And Installation
  • SPECIFICATIONS
    • BACKHOE LOADER SPECIFICATIONS
      • Machine Dimensions
      • Backhoe Rated Lift Capacity (Per SAE J31)
      • Capacities
      • Loader Performance
      • Backhoe Performance
      • Controls
      • Engine
      • Hydraulic System
      • Electrical System
      • Drive System
      • Axles
      • Tires
      • Cab
      • Instrument Panel
      • Temperature Range
    • MACHINE TORQUE SPECIFICATIONS
      • Drive Line
      • Cab
      • Wheels
    • TORQUE SPECIFICATIONS FOR BOLTS
      • Torque For General SAE Bolts
      • 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
    • REGULAR MAINTENANCE ITEMS
      • Parts
      • Fluids, Lubricants And Fuel
    • CONVERSIONS
      • Decimal And Millimeter Equivalent Chart
      • U.S. To Metric Conversion Chart
    • SERVICE TOOLS REQUIRED
      • Mechanical Tools
      • Hydraulic Tools
      • Electrical Tools
  • ALPHABETICAL INDEX

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