Basic theory, construction, and operation of engine valve train and cylinder head. Valve timing and adjustments of Deere engines. Design, construction, operation, and service methods for the following engine components: crankshafts, connecting rods, piston assemblies, cylinder liners, bearings, and related engine accessories. Crankshaft lubricants, lubrication systems, and oil filtration systems. Disassembly, inspection, measurements, reassembly, and adjustments performed on Deere diesel engines. Safety is included.