• Engine Mechanical (Overhaul, Rebuild)
• Fuel Injection System (Pumps, Injectors, Filters)
• Cooling System (Radiator, Thermostat, Water Pump)
• Lubrication System (Oil Pump, Filter, Galleries)
• Ignition System (if applicable, typically diesel glow plugs)
• Starting System (Starter Motor, Solenoids)
• Charging System (Alternator/Dynamo, Regulator)
• Electrical Components (Wiring Harness, Lights, Gauges)
• Clutch System (Operation, Adjustment, Replacement)
• Transmission (Gearbox internals, Shifting Mechanisms)
• Hydraulic System (Lift mechanism, Power steering if equipped)
• Brake System (Type, Adjustment, Repair)
• Steering System (Mechanism, Adjustment)
• Front Axle and Suspension
• Rear Axle and Drive System
• Wheel and Tire Specifications
• Chassis and Frame
• Bodywork and Sheet Metal
• Emission Control Systems (relevant for the era)