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Bobcat B300 Backhoe Loader Service Manual (SN 572311001-572399999)

Format: PDF (Printable Document)

File Language: English

File Pages: 752

File Size: 22.64 MB (Speed Download Link)

Brand: Bobcat

Model: B300 Backhoe Loader

Book No: 6902773

Serial No: SN 572311001-572399999

Type of Document: Service Manual

Categories: ,

$ 45

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Bobcat B300 Backhoe Loader Service Manual (SN 572311001-572399999)

Out on a rural place, a B300 backhoe loader is the do-everything machine. You're loading gravel, trenching water lines, cleaning corrals, and fixing driveways, usually on a tight weekend window. The service manual is what you reach for when something's leaking, slipping, or throwing a code and you can't afford to guess. You want the right specs and step-by-step so you only tear it apart once.

What this manual helps you do

  • Diagnose hydraulic issues in the loader and backhoe circuits, like weak boom lift or jerky bucket movement
  • Trace and repair electrical and wiring problems using proper diagrams, from dead starts to light and switch faults
  • Follow teardown and reassembly steps on major components, like cylinders, axles, and driveline parts
  • Check and set system pressures on the hydrostatic and hydraulic systems with the right test ports and sequences
  • Replace wear parts correctly, then verify adjustments so pins, bushings, brakes, and steering last

Who this is for

This is for anyone running or fixing a Bobcat B300 backhoe loader in the serial range 572311001 to 572399999: owner-operators, farm shops, small contractors, or field techs. If you only need how to run the controls 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, these manuals are usually searchable PDFs and the wiring diagrams are laid out so you can zoom in and trace circuits.

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

A: Check your B300 serial number; if it falls between 572311001 and 572399999, this is the right one.

Q: I'm just changing fluids and filters. Is this overkill?

A: For basic service, the operator's manual is enough. This service manual is for real repair and diagnostic work.

If your B300's serial number is in that range and you plan to wrench on it yourself, this is the manual you want. If it's outside that range, skip this one.

📘 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
    • LOADER BACKHOE IDENTIFICATION
  • SAFETY AND 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
      • Procedure
    • SERVICE SCHEDULE
      • Chart
    • AIR CLEANER SERVICE
      • Replacing The Filter
    • ENGINE COOLING SYSTEM
      • 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 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 HAND LEVER
      • Inspection And Maintenance
    • ALTERNATOR BELT
      • Adjusting The Alternator Belt
    • LUBRICATING THE LOADER BACKHOE
    • TIRE MAINTENANCE
      • Wheel Nuts
      • Mounting
      • Tire Pressure
  • HYDRAULIC SYSTEM
    • HYDRAULIC/HYDROSTATIC SCHEMATIC
    • HYDRAULIC SYSTEM INFORMATION
      • 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
    • BUCKET CYLINDER
      • Checking
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Assembly
    • STABILIZER CYLINDER
      • Checking
      • 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
      • Testing The Main Relief Valve
      • Adjustment
    • PORT RELIEF VALVE (BACKHOE CONTROL VALVE)
      • Testing And Adjusting (Arm Control)
      • Testing And Adjusting (Boom Control)
      • Testing And Adjusting (Boom Swing Control)
    • 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 (Front)
    • BACKHOE CONTROL VALVE
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inlet/Outlet Valve Section
      • Arm Valve Section
      • Tilt 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
    • HYDRAULIC FILTER
      • Removal And Installation
    • GEAR PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
      • Inspection
    • STEERING PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • STEERING VALVE
      • Removal And Installation
      • Adjustment
    • MASTER CYLINDER
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
  • HYDROSTATIC SYSTEM
    • HYDROSTATIC SYSTEM INFORMATION
      • Troubleshooting Chart
      • Replenishing Valve Function
    • OIL COOLER
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC DRIVE MOTOR
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC PUMP
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
    • HYDROSTATIC PUMP TESTING
      • Hydrostatic Pump Work Sheet
      • Pump Testing
  • DRIVE SYSTEM
    • PARKING BRAKE
      • Lever Removal And Installation
      • Cable Removal And Installation
      • Adjustment
    • PARKING BRAKE HOUSING
      • Removal And Installation
      • Parts Identification
      • Disassembly And Assembly
    • SERVICE BRAKE
      • Description
      • Bleeding The Brake Circuit
    • REAR AXLE
      • Removal
      • Installation
    • AXLE AND DIFFERENTIAL (REAR)
      • Troubleshooting Chart
      • General Information
      • Planetary Carrier Parts Identification
      • Planetary Carrier Disassembly
      • Planetary Carrier Inspection
      • Wheel Hub/Brake Group Parts Identification
      • Wheel Hub/Brake Group Disassembly
      • Steering Knuckle Parts Identification
      • Steering Knuckle Disassembly
      • Axle Housing/Drive Axle Parts Identification
      • Axle Housing/Drive Axle Disassembly
      • Differential Carrier Removal
      • Differential Carrier Disassembly
      • Pinion Group Parts Identification
      • Pinion Group Disassembly
      • Inspection
      • Pinion Group Inspection
      • Differential Parts Identification
      • Differential Disassembly
      • Differential Inspection
      • Differential Assembly
      • Pinion Group Assembly
      • Differential Carrier Assembly
      • Differential Carrier Installation
      • Axle Housing/Drive Axle Assembly
      • Steering Knuckle Assembly
      • Wheel Hub/Brake Group Assembly
      • Planetary Carrier Assembly
    • STEERING ANGLE ADJUSTMENT (REAR AXLE)
      • Adjustment
    • FRONT AXLE
      • Removal
      • Installation
      • Axle Pivot Bushing Removal And Installation
    • AXLE AND DIFFERENTIAL (FRONT)
      • Troubleshooting Chart
      • General Information
      • Planetary Carrier Parts Identification
      • Planetary Carrier Disassembly
      • Planetary Carrier Inspection
      • Wheel Hub Parts Identification
      • Wheel Hub Disassembly
      • Wheel Hub Inspection
      • Steering Knuckle Parts Identification
      • Steering Knuckle Disassembly
      • Axle Housing/Drive Axle Parts Identification
      • Axle Housing/Drive Axle Disassembly
      • Differential Carrier Removal
      • Differential Carrier Disassembly
      • Pinion Group Parts Identification
      • Pinion Group Disassembly
      • Pinion Group Inspection
      • Differential Parts Identification
      • Differential Disassembly
      • Differential Inspection
      • Differential Assembly
      • Pinion Group Assembly
      • Differential Carrier Assembly
      • Axle Housing/Drive Axle Assembly
      • Steering Knuckle Assembly
      • Wheel Hub Assembly
      • Planetary Carrier Assembly
    • STEERING ANGLE ADJUSTMENT (FRONT AXLE)
      • Adjustment
    • DRIVESHAFT
      • Removal And Installation
    • DROP BOX
      • Removal And Installation
      • Parts Identification
      • Disassembly
      • Inspection
      • Assembly
  • MAIN FRAME
    • OPERATOR CANOPY
      • Removal And Installation
    • ENCLOSED CAB
      • Not Available At Time Of Print
    • OPERATOR SEAT
      • Removal And Installation
    • FLOOR PANELS
      • Front Panel Removal And Installation
      • Rear Panel Removal And Installation
      • Front Right Panel Removal And Installation
      • Front Left 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
      • 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
    • X-CHANGE™
      • Removal And Installation
    • BUCKET
      • Backhoe Bucket Teeth Removal And Installation
      • Loader Bucket Teeth Removal And Installation
    • BUCKET POSITIONING LINK
      • Removal And Installation
    • CENTER FLOOR PANEL
      • Removal And Installation
    • STABILIZER
      • Removal And Installation
  • ELECTRICAL SYSTEM AND ANALYSIS
    • ELECTRICAL SCHEMATIC
    • ELECTRICAL SYSTEM INFORMATION
      • Troubleshooting Chart
      • Description
      • Fuse Location
      • 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
    • INSTRUMENT PANEL
      • Removal And Installation
  • ENGINE SERVICE
    • TROUBLESHOOTING
      • Chart
    • ENGINE SPEED CONTROL
      • Removal And Installation
      • Cable And Rod Removal And Installation
    • TRAVEL PEDAL
      • Removal And Installation
    • MUFFLER
      • Removal And Installation
    • AIR CLEANER
      • Removal And Installation
    • RADIATOR
      • Removal And Installation
    • ENGINE COMPONENTS AND TESTING
      • Valve Clearance Adjustment
      • Engine Compression Checking
      • Fuel Shut-Off Solenoid Removal And Installation
      • Checking Fuel Injection Pump
      • Fuel Injection Pump Removal And Installation
      • Fuel Injection Pump Timing
      • Fuel Injector Nozzles
      • Fuel Injector Nozzles Removal And Installation
      • Fuel Injector Nozzles Check
    • ENGINE
      • Removal And Installation
      • Mount Replacement
    • RECONDITIONING THE ENGINE
      • Cylinder Head Removal And Installation
      • Cylinder Head Disassembly And Assembly
      • Cylinder Head Servicing
      • Cylinder Head Top Clearance
      • Valve Guide Checking
      • Reconditioning The Valve And Valve Seat
      • Valve Spring
      • Rocker Arm And Shaft Checking
      • Timing Gearcase Cover Removal And Installation
      • Idler Gear And Camshaft Removal And Installation
      • Camshaft Servicing
      • Idler Gear And Shaft Servicing
      • Timing Gears Checking Backlash
      • Fuel Camshaft Removal And Installation
      • Fuel Camshaft Governor
      • Crankshaft Gear Removal And Installation
      • Oil Pump Removal And Installation
      • Oil Pump Service
      • Checking Engine Oil Pressure
      • Oil Pump Relief Valve
      • Piston And Connecting Rod Removal And Installation
      • Piston And Connecting Rod Servicing
      • Connecting Rod Alignment
      • Crankshaft And Bearings Removal And Installation
      • Crankshaft And Bearings, Servicing
      • Cylinder Bore, Checking
      • Water Pump Removal And Installation
      • Water Pump Disassembly And Assembly
    • FLYWHEEL HOUSING
      • Removal And Installation
    • FLYWHEEL
      • Removal And Installation
      • Ring Gear Removal And Installation
    • DRIVE COUPLER
      • Removal And Installation
    • TURBO
      • Not Available At Time Of Print
  • SPECIFICATIONS
    • LOADER SPECIFICATIONS
      • Loader Backhoe Dimensions
      • Performance
      • Controls
      • Engine
      • Hydraulic System
      • Electrical
      • Drive System
      • Capacities
      • Tires
    • ENGINE SPECIFICATIONS
      • Fuel Injection Nozzles
      • Fuel Injection Pump
      • Cylinder Head
      • Valves
      • Valve Springs
      • Valve Timing
      • Rocker Arms
      • Camshaft
      • Cylinders
      • Tappet
      • Piston Rings
      • Pistons
      • Crankshaft
      • Oil Pump
      • Thermostat
      • Connecting Rods
      • Timing Gear
      • Engine Bolt Torque
      • 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
    • B300-1
    • B300-2
    • B300-3
    • B300-4

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