Komatsu D21A-7T Bulldozer Workshop Repair Service Manual

This workshop repair service manual is for the Komatsu D21A-7T Bulldozer with serial number 75001 and up. It is designed for mechanical technicians familiar with service procedures for BRP products. The manual covers repair and overhaul of the bulldozer, assuming the technician is well-versed in general automobile practices. It includes instructions on components manufactured for the bulldozer, as well as repairs of proprietary components with instructions from respective manufacturers. The manual provides reliable information and emphasizes particular information denoted by the wording and symbols: WARNING, CAUTION, NOTE.

It offers diagnostic and repair procedures, making it useful for both professional mechanics and DIY enthusiasts. For simpler jobs, doing it yourself may be quicker and cost-effective. However, safety equipment and precautions must be observed. Special tools recommended or required for adjustments or repairs are identified by their special tool number and illustrated.

The manual contains specifications and procedures available in an authorized Komatsu D21A-7T Bulldozer dealer service department. It aims to help users get the best value from their bulldozer and make informed repairs like a professional automotive technician. The content depicts parts and/or procedures applicable to the particular product at the time of writing.

It includes information and procedures for routine maintenance and servicing, such as tune-ups, maintenance, removal & install procedures, assemblies & disassemblies, fuel system, ignition, lubrication system, exhaust, electrical system, and more extensive repairs involving engine and transmission disassembly. The manual is in English and is printable. It is available in .OVA file format for electronic delivery via email.

• General Information for Komatsu D21A-7T Bulldozer
• Maintenance for Komatsu D21A-7T Bulldozer
• Lubrication for Komatsu D21A-7T Bulldozer
• Heating for Komatsu D21A-7T Bulldozer
• Ventilation for Komatsu D21A-7T Bulldozer
• Air Conditioning for Komatsu D21A-7T Bulldozer
• Suspension for Komatsu D21A-7T Bulldozer
• Front Suspension for Komatsu D21A-7T Bulldozer
• Rear Suspension for Komatsu D21A-7T Bulldozer
• Wheel for Komatsu D21A-7T Bulldozer
• Tire System for Komatsu D21A-7T Bulldozer
• Differential for Komatsu D21A-7T Bulldozer
• Driveline for Komatsu D21A-7T Bulldozer
• Drive Shaft for Komatsu D21A-7T Bulldozer
• Transfer Case for Komatsu D21A-7T Bulldozer
• Brakes for Komatsu D21A-7T Bulldozer
• Engine for Komatsu D21A-7T Bulldozer
• Engine Mechanical for Komatsu D21A-7T Bulldozer
• Engine Cooling for Komatsu D21A-7T Bulldozer
• Engine Fuel for Komatsu D21A-7T Bulldozer
• Engine Electrical for Komatsu D21A-7T Bulldozer
• Ignition System for Komatsu D21A-7T Bulldozer
• Starting for Komatsu D21A-7T Bulldozer
• Charging System for Komatsu D21A-7T Bulldozer
• Emissions for Komatsu D21A-7T Bulldozer
• Engine Exhaust for Komatsu D21A-7T Bulldozer
• Engine Lubrication for Komatsu D21A-7T Bulldozer
• Engine Speed Control System for Komatsu D21A-7T Bulldozer
• Clutch for Komatsu D21A-7T Bulldozer
• Cooling for Komatsu D21A-7T Bulldozer
• Electronic Control Modules for Komatsu D21A-7T Bulldozer
• Engine Systems for Komatsu D21A-7T Bulldozer
• Heated Systems for Komatsu D21A-7T Bulldozer
• Horn for Komatsu D21A-7T Bulldozer
• Ignition Control for Komatsu D21A-7T Bulldozer
• Instrument Cluster for Komatsu D21A-7T Bulldozer
• Lamps for Komatsu D21A-7T Bulldozer
• Power Systems for Komatsu D21A-7T Bulldozer
• Restraints for Komatsu D21A-7T Bulldozer
• Speed Control for Komatsu D21A-7T Bulldozer
• Transmission for Komatsu D21A-7T Bulldozer
• Exhaust System for Komatsu D21A-7T Bulldozer
• Body Structure for Komatsu D21A-7T Bulldozer
• Seats for Komatsu D21A-7T Bulldozer
• Security and Locks for Komatsu D21A-7T Bulldozer
• Air Bag System for Komatsu D21A-7T Bulldozer
• Exterior Trim for Komatsu D21A-7T Bulldozer
• Interior Trim for Komatsu D21A-7T Bulldozer
• Frame for Komatsu D21A-7T Bulldozer
• Bumpers for Komatsu D21A-7T Bulldozer
• Fuel System for Komatsu D21A-7T Bulldozer
• Steering for Komatsu D21A-7T Bulldozer
• Transmission and Transfer Case for Komatsu D21A-7T Bulldozer
• Tires for Komatsu D21A-7T Bulldozer
• Wheels for Komatsu D21A-7T Bulldozer
• Body for Komatsu D21A-7T Bulldozer
• Heating for Komatsu D21A-7T Bulldozer
• Air Conditioning for Komatsu D21A-7T Bulldozer
• Emissions Control for Komatsu D21A-7T Bulldozer
• Engine Removal for Komatsu D21A-7T Bulldozer
• Engine Installation for Komatsu D21A-7T Bulldozer
• Final Drive for Komatsu D21A-7T Bulldozer
• Electrical System for Komatsu D21A-7T Bulldozer

• Air cleaner element renewal for Komatsu D21A-7T Bulldozer
• Air cleaner temperature control check for Komatsu D21A-7T Bulldozer
• Auxiliary drivebelt check for Komatsu D21A-7T Bulldozer
• Battery electrolyte level check for Komatsu D21A-7T Bulldozer
• Battery terminal check for Komatsu D21A-7T Bulldozer
• Brake hydraulic fluid renewal for Komatsu D21A-7T Bulldozer
• Brake hydraulic system seal and hose renewal for Komatsu D21A-7T Bulldozer
• Brake pipe and hose check for Komatsu D21A-7T Bulldozer
• Choke adjustment check for Komatsu D21A-7T Bulldozer
• Contact breaker point renewal and distributor lubrication for Komatsu D21A-7T Bulldozer
• Crankcase ventilation system check for Komatsu D21A-7T Bulldozer
• Emission control filter element renewal for Komatsu D21A-7T Bulldozer
• Engine coolant renewal for Komatsu D21A-7T Bulldozer
• Engine idle speed check for Komatsu D21A-7T Bulldozer
• Engine oil and filter renewal for Komatsu D21A-7T Bulldozer
• Engine valve clearance check - OHV engines for Komatsu D21A-7T Bulldozer
• Exhaust system check for Komatsu D21A-7T Bulldozer
• Fluid leak check for Komatsu D21A-7T Bulldozer
• Fluid level checks for Komatsu D21A-7T Bulldozer
• Front and rear brake pad/shoe check for Komatsu D21A-7T Bulldozer
• Front wheel alignment check for Komatsu D21A-7T Bulldozer
• Gearbox oil level check for Komatsu D21A-7T Bulldozer
• Handbrake check for Komatsu D21A-7T Bulldozer
• Hinge and lock check and lubrication for Komatsu D21A-7T Bulldozer
• HT lead, distributor cap for Komatsu D21A-7T Bulldozer
• Ignition circuit check for Komatsu D21A-7T Bulldozer
• Ignition timing for Komatsu D21A-7T Bulldozer
• Contact breaker gap (dwell angle) check for Komatsu D21A-7T Bulldozer
• Intensive maintenance for Komatsu D21A-7T Bulldozer
• Mixture adjustment check for Komatsu D21A-7T Bulldozer
• Road test for Komatsu D21A-7T Bulldozer
• Roadwheel security check for Komatsu D21A-7T Bulldozer
• Seat belt check for Komatsu D21A-7T Bulldozer
• Spark plug check for Komatsu D21A-7T Bulldozer
• Spark plug renewal for Komatsu D21A-7T Bulldozer
• Steering and suspension security check for Komatsu D21A-7T Bulldozer
• Throttle damper operation check for Komatsu D21A-7T Bulldozer
• Timing belt renewal for Komatsu D21A-7T Bulldozer
• Tyre checks for Komatsu D21A-7T Bulldozer
• Underbody inspection for Komatsu D21A-7T Bulldozer
• Wiper blade check for Komatsu D21A-7T Bulldozer

This workshop service manual is a comprehensive guide for maintaining and repairing the Komatsu D21A-7T Bulldozer, suitable for both professional mechanics and DIY enthusiasts.