What is the disassembly and assembly sequence of engine cylinder head bolts?

1 Answers
Viola
07/29/25 10:23pm
Engine cylinder head bolt disassembly and assembly sequence: The disassembly sequence of cylinder head bolts is to remove them in a cross-symmetrical order from both sides to the center of the cylinder head in two to three steps; The installation sequence of cylinder head bolts is to tighten them in a cross pattern from the center to both sides in three to four steps according to the specified torque. The function of the cylinder head is to seal the cylinder, form the combustion chamber together with the piston, and withstand the effects of high-temperature and high-pressure gas. The cylinder head bears the mechanical load caused by gas force and the tightening of cylinder bolts, as well as high thermal load due to contact with high-temperature gas. To ensure good sealing of the cylinder, the cylinder head must neither be damaged nor deformed, so it should have sufficient strength and stiffness.
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