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Bobcat 440, 443, 443B Skid-Steer Loader Repair Manual

Bobcat 440, 443, 443B Skid-Steer Loader Repair Manual - Image 2

Bobcat 440, 443, 443B Skid-Steer Loader Repair Manual

$15.00 – $31.00

🚜 Equipment
Brand	Bobcat
Type	Skid-Steer Loader
Model	440, 443, 443B
📄 Documents
Language	English
Format	PDF
Title	Publication No.	Pages
Repair Manual	6566694	346
Operation & Maintenance Manual (440)	6566475	86
Operation & Maintenance Manual (443)	6566477	86
Operation & Maintenance Manual (443B)	6722481	96

Manual

Foreword

The Bobcat 440, 443, and 443B Skid-Steer Loader Repair Manual is an essential guide for maintenance safety, preventive service, and reliable troubleshooting. It covers all core systems including hydraulic, hydrostatic, electrical, drive, and main frame components. Mechanics will find step-by-step instructions for scheduled maintenance, service procedures, engine repairs, and adjustments, along with detailed coverage of the loader’s hydraulic circuits and drive chains.

With dedicated sections for component removal, installation, and inspection, this manual also includes thorough technical data and full specifications for each loader model. Additional content provides guidance on lubrication, tire care, battery handling, control adjustments, and safety checks, making it a practical resource for both routine maintenance and more complex repairs.

Manual	Repair Manual, Operation & Maintenance Manual (440), Operation & Maintenance Manual (443), Operation & Maintenance Manual (443B)

Table of Content

📙 Table of Contents

Maintenance Safety

MAINTENANCE SAFETY

Contents

CONTENTS
- FOREWORD
- SAFETY INSTRUCTIONS

Preventive Maintenance

PREVENTIVE MAINTENANCE
- SERVICE SCHEDULE
- PREVENTIVE MAINTENANCE
  - Serial Number Identification
  - Loader Serial Number
  - Engine Serial Number
  - Delivery Report
- ENGINE SERVICE (General)
  - Air Cleaner Service – 440
  - Air Cleaner Service – 443
  - Fuel System
  - Fuel Filter – 440
  - Fuel Filter – 443, 443B
  - Engine Lubrication System
  - Engine Cooling System (440)
  - Engine Cooling System (443 & 443B)
  - Replacement Of The Engine Oil And Filter
- ELECTRICAL SYSTEM
  - Electrical System Service
  - Using An Extra Battery (Jump Starting)
  - Installing A New Battery
- SPARK ARRESTOR MUFFLER
- HYDRAULIC/HYDROSTATIC SYSTEM
  - Replacing The Hydraulic Filter Element
  - Checking & Adding Hydraulic Fluid
  - Removing The Hydraulic/Hydrostatic Fluid
- FINAL DRIVE TRANSMISSION (CHAINCASE)
  - Checking/Adding Chaincase Fluid
- TIRE MAINTENANCE
  - Tire Rotation
  - Wheel Nuts
- LUBRICATION OF THE LOADER
- ROLL OVER PROTECTIVE STRUCTURE (ROPS & FOPS)
  - Operator Cab
- TRANSPORTING THE BOBCAT LOADER
  - Loading The Bobcat Loader
  - Fastening The Loader To The Transport Vehicle
- LIFT ARM SUPPORT DEVICE
  - Installing The Lift Arm Support Device
- STOPPING THE BOBCAT LOADER

Hydraulic System

HYDRAULIC SYSTEM
- HYDRAULIC / HYDROSTATIC SCHEMATICS
- TROUBLESHOOTING
- HYDROSTATIC SYSTEM INFORMATION
  - 37° Flare Connections
  - Straight Thread O–Ring Fitting
  - Tubelines And Hoses
- HYDRAULIC CONTROL VALVE
  - Relief Valve
  - Removal Of The Hydraulic Control Valve
  - Disassembly Of The Control Valve
  - Inspection Of The Control Valve
  - Assembly Of The Control Valve
  - Installing The Control Valve
- HYDRAULIC PUMP
  - Checking Output Of The Hydraulic Pump
  - Removal Of The Hydraulic Pump
  - Disassembly Of The Hydraulic Pump
  - Inspection Of The Hydraulic Pump
  - Assembly Of The Hydraulic Pump
  - Installation Of The Hydraulic Pump
  - Start Up Procedure For The Hydraulic Pump
- LIFT CYLINDER
  - Checking The Lift Cylinders
  - Removing The Lift Cylinder
  - Installation Of The Lift Cylinder
- TILT CYLINDER
  - Checking The Tilt Cylinder
  - Removing The Tilt Cylinder
  - Installing The Tilt Cylinder
- HYDRAULIC CYLINDER REPAIR
  - Disassembly Of The Hydraulic Cylinder
  - Assembly Of The Hydraulic Cylinder
- HYDRAULIC/HYDROSTATIC RESERVOIR
  - Removing The Hydraulic/Hydrostatic Reservoir
- CONTROL PEDAL, LINKAGE & LOCKS
  - Removing The Control Pedal
  - Installing The Control Pedal
  - Pedal Lock Linkage
    - Removal
    - Installation
- SEAT BAR SYSTEM
  - Seat Bar Installation
  - Seat Bar Maintenance

Hydrostatic System

HYDROSTATIC SYSTEM
- TROUBLESHOOTING
- HYDROSTATIC SYSTEM INFORMATION
  - Replenishing Valves Function
- STEERING LEVERS
  - Removing The Steering Levers
  - Repairing The Steering Levers
  - Installing The Steering Levers
- STEERING LINKAGE
  - Adjusting The Steering Linkage
  - Removing The Pintle Arms
  - Installing The Pintle Arms
- PORT BLOCK
  - Checking Charge Pressure
  - Charge Pressure Relief Valve
  - Cold Weather By–Pass Valve
  - Removing The Port Block
  - Installing The Port Block
- HYDROSTATIC MOTOR
  - Removing The Hydrostatic Motor
  - Disassembly Of The Hydrostatic Motor
  - Hydrostatic Motor Inspection
  - Assembly Of The Hydrostatic Motor
  - Start Up Procedure For The Hydrostatic Motor
- HYDROSTATIC PUMP
  - Removing The Hydrostatic Pumps
  - Disassembly Of The Hydrostatic Pump
  - Inspection Of The Hydrostatic Pumps
  - Assembly Of The Hydrostatic Pumps
  - Installing The Hydrostatic Pumps
  - Hydrostatic Pump Start Up Procedure
- DRIVE BELT AND TENSION PULLEY
  - Removing Tension Pulley
  - Installing Tension Pulley
  - Drive Belt Removal–In The Loader
- TOWING THE BOBCAT LOADER

Drive System

DRIVE SYSTEM
- PARKING BRAKE
  - Parking Brake Adjustment
  - Removing Parking Brake
  - Inspecting The Parking Brake
  - Installing The Parking Brake
- DRIVE CHAINS
  - Removing The Drive Chain(s)
  - Installing The Drive Chain(s)
- AXLES AND BEARINGS
  - Removing The Axle(s) And Bearings
  - Assembly Of The Axle
  - Installing The Axle(s) And Bearings
- CHAINCASE FLUID
  - Replacing Chaincase Fluid

Main Frame

MAIN FRAME
- OPERATOR CAB
  - Raising The Operator Cab
  - Lowering The Operator Cab
  - Jumper Start Switch
  - Removing The Operator Cab
  - Installing The Operator Cab
- LIFT ARMS
  - Removing The Lift Arms
  - Installing The Lift Arms
- BOB–TACH
  - Removing The Bob–Tach
  - Disassembly Of The Bob–Tach
  - Assembly Of The Bob–Tach
  - Installing The Bob–Tach
- REAR DOOR
  - Removing The Rear Door
- FUEL TANK
  - Removing The Fuel Tank
  - Installing The Fuel Tank
- REAR WINDOW
  - Installing Rear Window

Electrical System

ELECTRICAL SYSTEM
- ELECTRICAL SCHEMATICS
- TROUBLESHOOTING
- ELECTRICAL SYSTEM
  - Electrical Circuitry
  - Safety Procedures For The Batteries
  - Precautions For The Alternator
- BATTERY
  - Removing The Battery
  - Checking The Battery
  - Installing The Battery
- OPERATOR CAB WIRE HARNESS
  - Removing The Wire Harness
  - Installing The Wire Harness
- ENGINE WIRE HARNESS
- ALTERNATOR SYSTEM (440)
  - Replacing The Stator
- ALTERNATOR SYSTEM (443)
  - Adjusting The Alternator
  - Checking The Alternator (443) (Early Models)
  - Removing The Alternator
  - Repairing The Alternator (Early Models)
  - Install The Alternator
- ALTERNATOR (Melroe)
  - Alternator Output Test (New Style)
  - Rectifier (Diode) Test (New Style)
  - Alternator Regulator Test (New Style)
  - Disassembly And Inspection (New Style)
  - Stator Continuity Test (New Style)
  - Stator Ground Test (New Style)
  - Rotor Continuity Test (New Style)
  - Rotor Ground Test (New Style)
  - Rectifier Continuity (Diode) Test (New Style)
  - Assembly (New Style)
- STARTER (440)
  - Checking The Starter (440)
  - Removing The Starter
  - Repairing The Starter
  - Installing The Starter
- STARTER (443)
  - Checking The Starter (443)
  - Removing The Starter
  - Repairing The Starter
  - Installing The Starter
- ALTERNATOR (Motorola)
  - Belt Tension
  - Troubleshooting The Alternator
  - Checking The Alternator Output
  - Removal And Installation
  - Disassembly And Assembly

Engine Service

ENGINE SERVICE
- ENGINE SERVICE – KOHLER (440)
  - TROUBLESHOOTING
  - ENGINE & ATTACHING PARTS
    - Removing The Engine (Early Model)
    - Installing The Engine
    - Removing The Engine (Later Model)
    - Oil Cooler Removal
    - Engine Muffler Removal
    - Engine Muffler Installation
  - IGNITION SYSTEM
    - Spark Plugs
    - Breaker Points
    - Condenser
    - Ignition Coil
    - Static Ignition Timing
    - Timing Light
    - Valve & Tappet Clearance
    - Compression Test
  - CARBURETOR AND GOVERNOR
    - Carburetor Adjustment On The Engine
      - Main Fuel Adjustment
      - Idle Fuel Adjustment
      - Idle Speed Setting
      - Shutdown Control Solenoid
    - Reconditioning the Carburetor
      - Disassembly
      - Assembly
    - Governor and Adjustment
      - Adjustments
    - Carburetor
    - Adjusting the Carburetor
    - Throttle Shaft
    - Choke Shaft
    - Float Level
  - RECONDITIONING THE ENGINE
    - Engine Disassembly
    - Cylinder Head
    - Cylinder Barrels
    - Cylinder Bore
    - Valves
    - Valve Guide
    - Valve Seat Inserts
    - Valve Springs
    - Piston And Piston Rings
    - Crankshaft And Connecting Rods
    - Connecting Rods
    - Governor Inspection
    - Oil Pump Inspection
    - Assembling The Engine
- ENGINE SERVICE – KOHLER (443)
  - TROUBLESHOOTING
  - FUEL SYSTEM
    - Replacing The Fuel Filter
    - Removing The Air From The Fuel System
    - Fuel Injection Pump
    - Checking The Injection Pump
    - Removing Injection Pump
      - Installation
    - Timing The Fuel Injection Pump
    - Fuel Injector Nozzles
    - Nozzle Removal
    - Checking Fuel Injector Nozzles
    - Nozzle Installation
    - Checking Glow Plugs
    - Engine Compression Test
  - ENGINE & ATTACHING PARTS
    - Removing The Engine
    - Installing The Engine
    - Oil Cooler & Shrouding
      - Removal
      - Installation
    - Engine Radiator Removal
    - Engine Radiator Installation
    - Engine Blower Fan & Shrouding
      - Installation
    - Fan Blower & Water Pump Belt
      - Adjustment
    - Engine Flywheel Removal
    - Engine Flywheel Installation
  - CYLINDER HEAD
    - Removing The Cylinder Head
    - Disassembly Of The Cylinder Head
    - Servicing The Cylinder Head
    - Assembly Of The Cylinder Head
    - Installing The Cylinder Head
  - REPAIRING THE ENGINE
    - Removing The Gear Case
    - Removing The Timing Gear, Camshaft & Oil Pump
    - Removing Pistons & Crankshaft
    - Servicing The Timing Gear And Camshaft
    - Servicing The Connecting Rods And Pistons
    - Servicing The Crankshaft
    - Servicing The Cylinder Liners
    - Servicing The Oil Pump
    - Servicing The Water Pump
  - ASSEMBLY OF THE ENGINE
    - Installing The Crankshaft
    - Installing The Pistons
    - Installing The Camshaft And Timing Gears
    - Installing The Gearcase Cover

Technical Data

TECHNICAL DATA
- 440 LOADER SPECIFICATIONS
  - LOADER DIMENSIONS
  - OPERATIONS & PERFORMANCE
  - ENGINE
  - HYDRAULIC SYSTEM
  - ELECTRICAL
  - DRIVE SYSTEM
  - CAPACITIES
  - TIRES
- ENGINE SPECIFICATIONS – 440 (KOHLER)
  - Engine (General)
  - Cylinder Bore
  - Crankshaft
  - Camshaft
  - Connecting Rod
  - Piston, Pin & Rings
  - Valves, Guides & Tappet
  - Oil Pump
  - Engine Torque
- 443 LOADER SPECIFICATIONS
  - LOADER DIMENSIONS
  - OPERATIONS & PERFORMANCE
  - ENGINE
  - HYDRAULIC SYSTEM
  - ELECTRICAL
  - DRIVE SYSTEM
  - CAPACITIES
  - TIRES
- ENGINE SPECIFICATIONS – 443 (KUBOTA)
  - Fuel Injector Nozzles
  - Fuel Injection Pump
  - Cylinder Head
  - Valves
  - Valve Springs
  - Rocker Arms
  - Camshaft
  - Cylinders
  - Piston Rings
  - Pistons
  - Crankshaft
  - Oil Pump
  - Thermostat
  - Engine Torque
  - Crankshaft Re–Grind Data

Specifications

SPECIFICATIONS
- TORQUE SPECIFICATIONS
  - Engine Group – 440 Loader
  - Engine Group – 443 Loader
  - Fuel System Group
  - Steering Controls & Panel Group
  - Bob–Tach & Lift Arm Group
  - Seat Bar & Pedal Group
  - Brake, Chaincase & Axle Group
  - Hydraulic Group (Auxiliary Hydraulic–Optional)
  - Operator Cab, Main Frame & Rear Door Group
  - Hydrostatic Group – 440 Loader
  - Hydrostatic Group – 443 Loader
- HYDRAULIC/HYDROSTATIC FLUID SPECIFICATIONS
- DECIMAL AND MILLIMETER EQUIVALENTS
- U.S. TO METRIC CONVERSION
- STANDARD TORQUE SPECIFICATIONS FOR BOLTS

Service Manual Revisions

SERVICE MANUAL REVISIONS
- 440-1
- 440-2

Specification

Specification	Bobcat 440	Bobcat 443	Bobcat 443B
Years Produced	1975 – 1981	1981 – 1991	1991 – 1993
Model Type	Skid-Steer Loader	Skid-Steer Loader	Skid-Steer Loader
Engine Model	Kohler K662	Kubota D722	Kubota D722
Engine Type	Gasoline, 2-cylinder, air-cooled	Diesel, 3-cylinder, liquid-cooled	Diesel, 3-cylinder, liquid-cooled
Displacement	41.2 cu in (0.675 L)	43.9 cu in (0.719 L)	43.9 cu in (0.719 L)
Gross Power	16 hp (11.9 kW)	17.5 hp (13 kW)	17.5 hp (13 kW)
Rated Operating Capacity	600 lbs (272 kg)	700 lbs (318 kg)	700 lbs (318 kg)
Operating Weight	2,350 lbs (1,066 kg)	2,800 lbs (1,270 kg)	2,850 lbs (1,293 kg)
Lift Height to Pin	90 in (2,286 mm)	94.5 in (2,400 mm)	94.5 in (2,400 mm)
Wheelbase	26 in (660 mm)	27 in (686 mm)	27 in (686 mm)
Transmission	Mechanical chain drive	Hydrostatic	Hydrostatic
Hydraulic Flow	6.5 GPM (24.6 L/min)	7.0 GPM (26.5 L/min)	7.0 GPM (26.5 L/min)
Fuel Capacity	7.5 gal (28.4 L)	7.5 gal (28.4 L)	7.5 gal (28.4 L)
Tires	7.00×15	7.00×15	7.00×15
Length w/ Bucket	104 in (2,642 mm)	104 in (2,642 mm)	104 in (2,642 mm)
Width	48 in (1,219 mm)	48 in (1,219 mm)	48 in (1,219 mm)
Height	72 in (1,829 mm)	72 in (1,829 mm)	72 in (1,829 mm)

Buyer Questions & Answers

Frequently Asked Questions❔

Are the manuals OEM (Original Equipment Manufacturer)?

Yes, we only provide manuals that are sourced from the machine manufacturer or authorized dealers.

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Printed versions are available for select manuals — check the product page or contact us for availability.

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Yes, all pages are printable.

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