The overhaul package includes cylinder gasket and all kinds of oil seals, valve cover gasket, valve oil seal and gasket, etc.; the
items generally include engine overhaul, external processing of cylinder head plane, cleaning water tank, grinding valve,
inserting cylinder liner, pressing piston, cleaning oil circuit, maintaining motor and generator.
It includes cylinder gasket, valve oil seal, crankshaft front and rear oil seal, cooling system rubber ring, valve cover gasket,
oil pan gasket and other commonly used seals and consumable parts. Some of them are also divided into upper repair package and
lower repair package.