Additional information about engine repair is provided for the valve service and repair section. If there is no special procedure for servicing an internal engine part, it demonstrates that the manufacturer did not include one. Typically, in unit repair, procedures are carried out for both engine and unit inspection and machining, along with cleaning and assembly, not forgetting work on cylinders such as boring and honing, fitting of components such as bearings and connecting rods, other
Crankshaft fitting, changing the camshaft bearings, disassembling head and rod, seeking for and fixing errors in threads and grinding of valves and their seats (valve job). The job includes servicing the timing chain, belt and gears.