This volume (No. 280) contains information on the operation of tractors, including basic information on participation in road traffic, composition of trains, labeling requirements, brakes, accessories, tires, and attachments. It covers maintenance work such as adjusting the clutch, electrical system, chassis and body, braking system, inspection and maintenance plan, lubrication plan, lubrication service, care of the cockpit and hood, and polishing out small scratches in the paintwork. It also includes engine and transmission inspection and repairs, measuring compression pressure, pressure loss tests, disassembly of the cylinder, engine block and connecting rod, changing valve stem seals, cylinder wear, leak tests in the cooling system, adjusting the injection pump, (pre-)annealing system, ignition system for petrol and petroleum engines, transmission, differential, clutch, making seals yourself, starter, and generator, as well as the chassis and brake system.