When the universal joint is decomposed, different methods should be adopted according to the different structural characteristics. The most common universal joint decomposition method is to remove the cover bolt, take the lower cover plate and the cross axle roller bearing shell. These machines are available by hand. Some cardan shaft bearing shell by pushing out, should first remove the lock ring, hold the drive shaft or universal joint fork telescopic sleeve, percussion hammer edge, the impact of the cross shaft bearing shell, the impact bearing shell. In may not be struck, knocking hammer at the edge, the installation of the bearing shell in the drive shaft to avoid deformation, so that the bearing can not emerge; can not be hard hit at the bottom of the bearing shell, so as not to damage the shaft shell. After the universal joint is decomposed, it should be cleaned and checked, and the degree of damage should be checked item by item, and the proper repair should be carried out. The following points should be paid attention to in repair.

(1) the metal spalling, scratching, dents and shaft wear on the surface of the universal joint cross shaft can be repaired by chrome plating, overlaying, inlay and reduction.

(2) the cross axle bearing shell of the Mercedes Benz fittings in the north of Baotou and the bearing roller, such as wear, rupture, groove and so on, should be replaced.

(3) Baotou North Benz accessories bearing cover bolts to fasten, stop groove and the lock ring should be matched, should not be loose.

(4) the oil nozzle and safety valve of the cross shaft of the universal joint can be repaired if the screw hole thread is damaged more than 2 teeth. After repair, the oil channel should be unblocked.

(5) when there are cracks on the cross shaft of the Mercedes Benz fittings in the north of Baotou, they should be replaced.