The bolts of Baotou Bei Ben heavy truck fittings cylinder head are the connection parts of the tight cylinder head and the cylinder body. Its distribution position has a direct influence on the stress condition of the cylinder head and cylinder body, the reliability of the seal, and the deformation of the cylinder sleeve. So there are more than four cylinder head bolts around each cylinder cover, which are almost equal to the ISO polygon around the centerline of the cylinder.

Baotou North running heavy truck fittings cylinder head bolts are severely stressed, usually made of high quality alloy steel. In order to ensure a good seal of the surface, the cylinder head bolts have a certain pretightening force. But the preload is too large, so that the bolts are fatigue damage. Baotou Bei Ben heavy truck accessories will also cause the cylinder head warping deformation, resulting in air leakage, water leakage, or even destroy the cylinder cushion and other accidents.

All types of internal combustion engines are required to tighten the torque value of the cylinder head bolt when they are out of the factory, and also have certain requirements for the tightening sequence of the bolts. Generally speaking, it is carried out from the middle to the ends symmetrical and intersecting, and it is tightened 2-3 times to make the cylinder head uniformly stressed without warpage and prevent the cylinder from leaking.