What parts are there in the engine overhaul package?

One set of valve oil bag, one set of valve intake and exhaust, one set of plug ring, one set of cylinder liner with four rows of pushers (if it is a four-cylinder engine), four large and small tiles and four plugs, and the cooling system: water pump (the water pump blades are corroded or the water seal shows no signs of water seepage), engine water pipes, large-circulation iron pipes, small-circulation rubber hoses and bone valve water pipes (which must be replaced without aging and shrinkage). Fuel part: the upper and lower oil rings of the nozzle. Ignition part: high-voltage line can be replaced without shrinkage and leakage, spark plug, air intake part: air filter, other accessories: antifreeze, engine oil; Whether the cylinder head can be corroded or uneven, crankshaft, camshaft, anti-timing belt tensioner, anti-timing belt zeroing wheel, anti-timing belt, external engine belt and zeroing wheel, rocker arm or rocker arm shaft, if it is a hydraulic tappet, overhaul package includes cylinder gasket and various oil seals, valve cover gasket, valve oil seal and gasket, etc. Projects include: engine overhaul, external machining of cylinder head plane, cleaning of water tank and grinding of valves. The motor and generator are the maintenance parts of the engine. When disassembling the engine, the air conditioning system must be disassembled. Refrigerant can be added. Others like lighting system, pressure plate, separating bearing and battery. It needs to be checked separately to determine whether it can be replaced.