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Bobcat B730 Backhoe Loader Service Manual (SN B45111001-B45199999)

Format: PDF (Printable Document)

File Language: English

File Pages: 1185

File Size: 42.39 MB (Speed Download Link)

Brand: Bobcat

Model: B730 Backhoe Loader

Book No: 7286757

Serial No: SN B45111001-B45199999

Type of Document: Service Manual

Categories: ,

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Bobcat B730 Backhoe Loader Service Manual (SN B45111001-B45199999)

A B730 backhoe loader is the kind of machine that digs footings, loads trucks, and does utility trench work all week on a small contractor's site or farm. When it quits moving, loses hydraulic power, or throws an electrical fault, the person who reaches for the service manual is the one with tools in the truck trying to get it earning again. They're looking for proper teardown steps, test ports, pressure specs, and wiring info so they don't waste time or parts.

What this manual helps you do

  • Trace hydraulic problems on the loader, backhoe, and steering circuits using test ports and pressure checks
  • Diagnose drivetrain and transmission issues, including no-move, slipping, or harsh engagement complaints
  • Follow step-by-step removal and installation of major components like pumps, cylinders, axles, and the Bobcat-spec engine
  • Troubleshoot electrical faults with wiring diagrams, connector pinouts, and harness routing for the B730
  • Rebuild and adjust mechanical systems such as brakes, stabilizers, and linkage so they work within spec

Who this is for

This is for anyone working on a Bobcat B730 backhoe loader in the serial range B45111001 to B45199999: small contractors, farm owners, rental fleets, and shop or field mechanics. If you only need basic controls, capacities, or daily checks, 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 on a laptop or tablet?

A: These manuals are usually supplied as searchable PDFs, and the wiring diagrams are laid out so you can zoom in on a screen in the truck or shop.

Q: My B730 serial number is outside B45111001-B45199999. Will this still work?

A: It may not match changes in hydraulics, wiring, or components. You want the service manual that lists your exact serial range.

Q: I just need parts numbers to order stuff. Is this the right manual?

A: No. This is the workshop service manual. For part numbers you need the Bobcat parts catalog for the B730.

Bottom line: If you're repairing or diagnosing a B730 within that serial range, this is the right yes/no answer: yes, this is the manual you want.

📘 Show Index

Table of Contents:

  • MAINTENANCE SAFETY
  • CONTENTS
  • GENERAL INFORMATION
    • MACHINE INFORMATION
      • B730 Specification
      • B750 Specification
      • B780 Specification
    • TECHNICAL PROPERTIES
      • B730 Specifications
      • Engine
      • Electrical System
      • Hydraulic System
      • Transmission
      • Axle / Brakes
      • Tires
      • Loader
      • Backhoe
      • Cab / Canopy
      • Steering
      • Capacities
      • Weights
      • B750 Specifications
      • Engine
      • Electrical System
      • Hydraulic System
      • Transmission
      • Axle / Brakes
      • Tires
      • Loader
      • Backhoe
      • Cab / Canopy
      • Steering
      • Capacities
      • Weights
      • B780 Specifications
      • Engine
      • Electrical System
      • Hydraulic System
      • Transmission
      • Axle / Brakes
      • Tires
      • Loader
      • Backhoe
      • Cab / Canopy
      • Steering
      • Capacities
      • Weights
    • POSITION OF MACHINE
      • Loader Attachment Position
      • Backhoe Attachment Position
    • SAFETY INSTRUCTION
      • General Safety Information
      • Crushing And Burning Prevention
      • Fire And Explosion Prevention
      • Hydraulic Lines And Hoses
    • STORAGE
      • Preparing The Machine For Storage
      • Preparing The Machine For Work After A Long Period Of Storage
  • LUBRICATION AND MAINTENANCE
    • LIFTING AND BLOCKING THE BACKHOE LOADER
      • Procedure
    • APPROVED LIFT ARM SUPPORT DEVICE
      • Description
    • TOWING THE BACKHOE LOADER
      • Procedure
    • AXLE TOE-IN ADJUSTMENT
      • Procedure
    • LUBRICATION
      • General Safety Information
      • Fluids, Lubricants And Fuel
      • Lubricant And Operating Materials Specifications
      • Diesel Fuel
      • Engine Coolant
      • Hydraulic / Hydrostatic Fluid Chart
      • Brake Oil (For B730 S/N B45111001 – B45111554, B750 S/N B45211001 – B45211079 And B780 S/N B45311001 – B45311061)
      • Transmission Fluid
      • Front Axle Oil
      • Rear Axle Oil
      • Lubrication Chart (B730 And B750)
      • Lubrication Chart (B780)
      • Diesel Engine
      • Checking The Engine Oil Level
      • Draining The Engine Oil
      • Replace The Oil Filter Element
      • Adding Engine Oil
      • Cooling System
      • Checking The Coolant Level
      • Checking The Coolant Level (Cont’d)
      • Changing The Coolant
      • Draining Coolant
      • Clean The Radiator And Adding Coolant
      • Clean The Oil Cooler And The Radiator
      • Hydraulic System
      • Check Hydraulic Oil Level
      • To Drain Oil
      • To Replace The Return Filter
      • Replacing The Internal Hydraulic Filter
      • To Clean The Suction Strainer
      • Adding Hydraulic Oil
      • The Fuel System
      • Fuel Specifications
      • Biodiesel Blend Fuel
      • Drain The Contaminant From The Fuel Filter
      • Drain The Contaminant From The Fuel Tank
      • Replace The Fuel Filter Elements
      • Adding Fuel
      • Transmission System
      • Checking Transmission Oil Level
      • Draining Transmission Oil
      • Replace The Transmission Filter Elements
      • Add Transmission Oil
      • Front Drive Axle And Reduction Gears
      • To Drain Oil
      • To Add Oil
      • Reduction Gears
      • To Check Reduction Gear Oil Level
      • To Drain Reduction Gear Oil
      • Adding Reduction Gear Oil
      • Rear Axle
      • Checking Rear Axle Oil Level
      • Cleaning The Rear Axle Breather
      • Draining Rear Axle Oil
      • Adding Rear Axle Oil
      • Brake Fluid
      • Checking Brake Fluid Reservoir Level
      • Adding Brake Fluid
      • Bleeding The Brake System
    • MAINTENANCE AND ADJUSTMENTS
      • Service Schedule (B730 & B750)
      • Service Schedule (B780)
    • AIR CLEANER SERVICE
      • Engine Air Intake System
      • Cleaning The Primary Element
      • Replacing The Air Filter Elements
      • Cab Air Intake Filter
    • BACKHOE BOOM / SWING LOCK
      • Engaging And Disengaging
    • ENGINE ALTERNATOR / FAN BELT AND AIR CONDITIONER BELT (IF EQUIPPED)
      • Maintenance Instruction
      • Replacing Fan And Alternator Belt
    • TIRE MAINTENANCE
      • Type Of Tires
      • To Replace A Wheel
      • Wheel Nut Torque Settings
    • LUBRICATING THE BACKHOE LOADER
      • Lubrication Locations
  • HYDRAULIC SYSTEM
    • HYDRAULIC / HYDROSTATIC SCHEMATICS
    • HYDRAULIC SYSTEM
      • Glossary Of Hydraulic / Hydrostatic Symbols
    • HYDRAULIC SYSTEM
      • Tests And Hydraulic Pressure Test (B730)
      • Tests And Hydraulic Pressure Test (B750)
      • Tests And Hydraulic Pressure Test (B780)
      • Test Ports
      • Hydraulic Tank And Return Filter
      • Fixed Displacement Tandem Pump
      • Blocks
      • ON-OFF Solenoid Valve
      • ON-OFF Pressure Reducing Valve
      • Loader Control Valve
      • Unloading Valve Test
      • Steering Priority Valve
      • Backhoe Control Valve
      • Steering Pressure Test
      • Pilot Pressure Test (B750) And (B780)
      • Pilot Pressure Regulation Block (B780)
      • Pilot Pressure Regulation Block (B750)
      • Priority Valve (B730 And B750)
      • Priority Valve (B780)
    • RETURN LINE CHECK VALVE
      • Removal And Installation
    • HYDRAULIC CYLINDERS
      • Basic Type Cylinder Assembly
      • Nut Type Cylinder Montage
      • Loader Lift Cylinder
      • Loader Bucket (Tilt) Cylinder
      • Clampshell Cylinder
      • Backhoe Boom Cylinder
      • Backhoe Arm Cylinder
      • Backhoe Bucket Cylinder
      • Backhoe Extendible Arm Cylinder
      • Backhoe Swing Cylinder
      • Backhoe Stabilizer Cylinder
    • HYDRAULIC PUMP
      • Removal And Installation (B780)
      • Removal And Installation (B730 AND B750)
    • BACKHOE CONTROL VALVE (B750 AND B780)
      • Removal And Installation
    • BACKHOE CONTROL VALVE (B730)
      • Removal And Installation
    • BOOM CYLINDER
      • Removal And Installation
    • BUCKET CYLINDER
      • Removal And Installation
    • CLAMP CYLINDERS
      • Removal And Installation
    • CLAMSHELL CYLINDER
      • Removal And Installation
    • LIFT CYLINDERS
      • Removal And Installation
    • STABILIZER CYLINDERS
      • Removal And Installation
    • STICK CYLINDER
      • Removal And Installation
    • SWING CYLINDERS
      • Removal And Installation
    • TILT CYLINDERS (b750 AND b780)
      • Removal And Installation
    • TILT CYLINDERS (b730)
      • Removal And Installation
    • BRAKE PEDAL AND BOOSTER
      • Removal And Installation (B730 S/N B4511155 & Above) (B750 S/N B45211080 & Above) (B780 S/N B45311062 & Above)
    • HYDRAULIC RESERVOIR
      • Removal And Installation
    • LOADER CONTROL VALVE (B750 AND B780)
      • Removal And Installation
    • LOADER CONTROL VALVE (B730)
      • Removal And Installation
    • STEERING COLUMN AND UNIT
      • Removal And Installation
  • ELECTRICAL SYSTEM
    • ELECTRICAL SCHEMATICS
    • ELECTRICAL SYSTEM
      • Fuses – B730 And B750
      • Relays – B730 And B750
      • Fuses – B780
      • Relays – B780
      • Relays – B780
    • ELECTRICAL SYSTEM
      • Component Location
      • Component Location – ZF In B730 And B750
      • Component Location – Carraro In B780
    • BATTERY
      • Removal And Installation
    • FUSE
      • Fuse Location
    • RELAY
      • Relay Location
    • INSTRUMENT CLUSTERS
      • Removal And Installation
  • AXLES
    • SAFTEY INSTRUCTIONS
      • General Safety Recommendations
    • FRONT AXLE – B730 AND B750
      • Description
      • Removal And Installation
      • Disassembly
      • Reassembly
    • FRONT AXLE – B780
      • Description
      • Removal And Installation
      • Tightening Torque
      • Steering Cylinder Group Disassembly
      • Steering Cylinder Group Assembly
      • Epicyclic Reduction Gear Group Disassembly
      • Epicyclic Reduction Gear Group Assembly
      • Wheel Hub Group Disassembly
      • Wheel Hub Group Assembly
      • Axle Beam Group Disassembly
      • Axle Beam Group Assembly
      • Flange Group Disassembly
      • Flange Group Assembly
      • Differential Support Group Disassembly
      • Differential Support Group Assembly
      • Differential Group Disassembly
      • Differential Group Assembly
      • Pinion Group Disassembly
      • Pinion Group Assembly
      • Toe-in / Steering Angle
      • Steering Angle Adjustment
      • Testing After Assembly
    • FRONT SHAFT – B780
      • Removal And Installation
    • REAR SHAFT – B780
      • Removal And Installation
    • FRONT SHAFT B730 AND B750
      • Removal And Installation
    • REAR SHAFT – B730 AND B750
      • Removal And Installation
    • SAFETY INSTRUCTIONS
      • General Safety Recommendations
    • REAR AXLE – B730 AND B750
      • Preface
      • Lubrication And Maintenance Instructions
      • Service Brake – Brake Wear Measurement On The ZF- Axle MT-B 3070
      • Instructions For The Displacement Resp. Emergency Towing Of The Vehicle
      • Technical Data
      • Removal And Installation
      • Disassembly – Output Unit
      • Service Brake (Multi-Disc Brake)
      • Differential
      • Disassembly – Input
      • Disassembly – Parking Brake (Multi-Disc Brake)
      • Disassembly – Parking Brake (Disc Brake)
      • Reassembly – Input
      • Reassembly – Differential
      • Assembly Service Brake (Multi-Disc Brake)
      • Reassembly – Output Unit
      • Parking Brake Version (Multi-Disc Brake)
      • Reassembly of Parking Brake version (Disc Brake)
      • Completion Of Axle
    • REAR AXLE – B780
      • Description
      • Removal And Installation
      • Tightening Torque
      • Steering Cylinder Group Disassembly
      • Steering Cylinder Group Assembly
      • Epicyclic Reduction Gear Group Disassembly
      • Epicyclic Reduction Gear Group Assembly
      • Wheel Hub Group Disassembly
      • Wheel Hub Group Assembly
      • Parking Brake Group Disassembly
      • Parking Brake Group Assembly
      • Parking Brake Caliper
      • Axle Beam Trumpet Group Disassembly
      • Axle Beam Trumpet Group Assembly
      • Brake Group
      • Brake Group Disassembly
      • Brake Group Assembly
      • Differential Support Group Disassembly
      • Differential Support Group Assembly
      • Differential Group Disassembly
      • Differential Group Assembly
      • Differential Lock
      • Differential Locking Group Disassembly
      • Differential Locking Group Assembly
      • Pinion Group Disassembly
      • Pinion Group Assembly
      • Toe-In / Steering Angle
      • Steering Angle Adjustment
      • Testing After Assembly
    • SERVICE BRAKE
      • Description
      • Bleeding The Brake Circuitry
      • Test Procedure
      • Brake System Troubleshooting
  • TRANSMISSION
    • MANUAL USE
      • Maintenance
      • Repair
      • Agreements And Definitions
      • Typographic Agreements
      • Measurements
      • General Description
      • Recommendations For Repair Operations
      • Transmission Installation On The Machine
    • SAFETY INSTRUCTIONS
      • General Safety Recommendations
    • TRANSMISSION – B730 AND B750
      • Serial Number Plate Location
      • Preface
      • General
      • Schematics
      • Measuring Points For Pressure Oil And Temperature
      • Solenoid / Gear Activation
      • Hydraulic Schematic
      • Removal And Installation
      • Disassembly
      • Reassembly
    • TRANSMISSION – B780
      • Component Location
      • Tightening Torque
      • Hydraulic Schematic
      • Main Hydraulic Components
      • Kinematic Scheme
      • Plugs And Filters Disassembly
      • Removal And Installation
      • Plugs And Filters Assembly
      • Torque Converter And Oil Pump Disassembly
      • Torque Converter And Oil Pump Assembly
      • Hydraulic Control Valve Disassembly
      • Hydraulic Control Valve Assembly
      • Hydraulic System Pipes Disassembly
      • Hydraulic System Pipes Assembly
      • Transmission Housing Disassembly
      • Transmission Housing Assembly
      • Shafts A – D Disassembly
      • Shafts A – D Assembly
      • Axis B Disassembly
      • Axis B Assembly
      • Axis C Disassembly
      • Axis C Assembly
      • Axis E Disassembly
      • Axis E Assembly
  • ENGINE SERVICE
    • GENERAL INFORMATION
      • Introduction
      • Engine Views
      • Engine Identification
      • Safety Precautions
      • Engine Lift Equipment
      • Viton Seals
      • POWERPART Recommended Consumable Products
    • SPECIFICATIONS
      • Basic Engine Data
      • Data And Dimensions
      • Thread Sealant
      • Standard Torque Values
      • Specific Torque Values
      • Compression Test Data
    • CYLINDER HEAD
      • General Description
      • Atomiser Cover
      • Rocker Cover
      • Rocker Arm
      • Valve Tip Clearances
      • Valve Springs
      • Removal
      • Installation
      • Valve And Valve Springs
      • Valve Guides
      • Inspection And To Correct
    • PISTON AND CONNECTING ROD ASSEMBLIES
      • General Description
      • Big End Bearing
      • Piston And Connecting Rod
      • Piston Rings
      • Piston And Connecting Rod Assembly
      • Piston And Piston Rings
      • Connecting Rod
      • Partially Finished Small End Bush
      • Piston Cooling Jets
    • CRANKSHAFT ASSEMBLY
      • General Description
      • Crankshaft Pulley
      • Rear End Oil Seal Assembly
      • To Remove And To Fit A Wear Sleeve
      • Thrust Washers
      • Main Bearings
      • Crankshaft
      • Balancer Unit
    • TIMING CASE AND DRIVE ASSEMBLY
      • General Description
      • Timing Cover
      • Mechanical Fuel Pump Gear
      • Electronic Fuel Pump Gear
      • Idler Gear and Hub
      • Heavy Duty Idler Gear
      • Camshaft Gear
      • Front Oil Seal
      • Timing Case
      • Crankshaft Gear
      • Camshaft and Tappets
    • CYLINDER BLOCK ASSEMBLY
      • General Description
      • Cylinder Block
      • Cylinder Bore
    • ENGINE TIMING
      • General Description
      • To Set Number 1 Piston To TDC On The Compression Stroke
      • To Check The Timing Of The Bosch VP30 Fuel Injection Pump
      • To Check The Timing Of The Bosch EPVE Fuel Injection Pump
      • To Adjust The Timing Of The Bosch EPVE Fuel Injection Pump
      • To Check The Timing Of The Delphi DP210 Fuel Injection Pump
      • To Check The Valve Timing
    • ASPERATION SYSTEM
      • General Description
      • Exhaust Elbow
      • Turbocharger Side Mount
      • Turbocharger Faults
      • Open Engine Breather
      • Natural Aspirated Engine Breather
      • Closed Engine Breather
    • LUBRICATION SYSTEM
      • General Description
      • Lubrication System Flow Diagram
      • Canister Type Oil Filter
      • Element Type Oil Filter
      • Filter Head
      • Sump
      • Dipstick Tube
      • Oil Strainer And Suction Pipe
      • Lubricating Oil Pump Assembly
      • Relief Valve
    • FUEL SYSTEM
      • General Description
      • Cold Start Advance Unit (KSB)
      • Typical Fuel System
      • Fuel Filter Assembly
      • Atomizers
      • Fuel Lift Pump And Filter Assembly
      • Removing Air From The Fuel System
      • Bosch VP30 Fuel Injection Pump
      • Bosch EVPE Fuel Injection Pump
      • Delphi DP210 Fuel Injection Pump
    • COOLING SYSTEM
      • General Description
      • Coolant Flow Diagram
      • Thermostat
      • Coolant Pump
      • Fan
      • Fan Drive
      • Lubricating Oil Cooler
      • Coolant Bypass Pipe
      • Oil Cooler / Radiator Removal And Installation B780
      • Oil Cooler / Radiator Removal And Installation B730 And B750
    • FLYWHEEL AND HOUSING
      • General Description
      • Flywheel
      • Ring Gear
      • Flywheel Housing
    • ELECTRICAL SYSTEM
      • General Description
      • Alternator
      • Starting Aid (Glow Plug)
      • Electrical Components
      • Engine Control Module (ECM)
      • Voltage Load Protection Module
      • Programming A New ECM
      • Speed And Timing Sensor
      • Pressure Sensor
      • Temperature Sensor
      • Wiring Harness
    • AUXILIARY EQUIPMENT
      • Power Steering Pump
      • Adaptor For A Hydraulic Pump Or A Steering Pump
      • Exhauster
    • SPECIAL TOOLS
      • List Of Special Tools
    • REAR HAND THROTTLE LEVER
      • Cable Adjustment Procedure
    • ACCELERATOR PEDAL
      • Removal And Installation
      • Cable Adjustment Procedure
    • EXHAUST
      • Removal And Installation
    • AIR FILTER
      • Housing Removal And Installation
    • ENGINE B780
      • Removal And Installation
    • ENGINE B730 AND B750
      • Removal And Installation
  • HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
    • HVAC UNIT
      • Removal
      • Installation
  • MAIN FRAME
    • BACKHOE BOOM / SWING LOCK
      • Removal And Installation
    • BACKHOE BUCKET TEETH
      • Removal And Installation
    • LOADER BUCKET TEETH
      • Removal And Installation
    • BOOM
      • Removal And Installation
    • CAB (B750 AND B780)
      • Removal And Installation
    • CAB (B730)
      • Removal And Installation
    • COUNTERWEIGHT
      • Removal And Installation
    • ENGINE COVER
      • Removal And Installation
    • ENGINE SIDE COVERS
      • Removal And Installation
    • FRONT MUDGUARD (B780)
      • Removal And Installation
    • FRONT MUDGUARD (B730 AND B750)
      • Removal And Installation
    • PARKING LEVER
      • Removal And Installation
    • FUEL TANK
      • Removal And Installation
    • GRILL FRAME
      • Removal And Installation
    • GRILLE
      • Removal And Installation
    • KINGPOST
      • Removal And Installation
    • SIDE SHIFT
      • Removal And Installation
    • STICK
      • Removal And Installation
    • FRONT CONSOLE
      • Removal And Installation
    • STABILIZER WEAR PADS
      • Adjustment
  • ALPHABETICAL INDEX

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