【fault book】Diesel engine water tank bubbles how to do?

Diesel engine water tank bubbles, generally is the cylinder of high-pressure gas into the cooling water channel caused by.

The reasons for the air fugitive and exclusion methods are as follows:

1. not according to the prescribed torque tighten the cylinder head nuts. If the torque is too small, the cylinder head is not tightened, the high pressure gas will escape into the waterway. Should be tightened according to the prescribed torque cylinder head nuts, and regular re-tightening.

2. cylinder gasket use too long, washed or burned, the seal becomes poor, resulting in gas leakage. To replace the new cylinder gasket.

3. Cylinder head plane processing is not flat or deformation, resulting in air leakage. Should grind the cylinder head plane or replace the cylinder head.

4. Improper assembly, resulting in cylinder liner shoulder fracture and air escape. Replace the cylinder liner with a new one according to the specified method. 

5. The cylinder liner shoulder height is not enough or the depth of the shoulder hole on the body is too large, causing the cylinder liner into the body, after the projection of the body plane height is not enough, or even sink, the gas will be from the shoulder into the waterway. Therefore, before assembly, you should test fit, check the amount of projection and ensure that it is within the allowable range.