Baotou North Benz parts engine cylinder block, cylinder head crack or plug in the water seepage, leakage phenomenon, will seriously affect the service life of the engine, so the inspection of the leakage water must be carefully carefully.
The reason
Improper use of water leakage, leakage. If the engine under the condition of high temperature sudden cold, in the winter season starting when the sudden high water, or did not require the use of antifreeze fluid, resulting in Baotou North Benz parts of the cylinder body and the cylinder cover is cracked, water blocking cover or bulge extrusion cracks caused by corrosion, cavitation water blocking cover is a.
Improper disassembly and assembly. Not according to the provisions of the order, method and torque fastening bolts, the Baotou Benz parts cylinder body and the cylinder cover uneven force or impact crack; or replace the water blocking cover is installed in place, deflection deformation.
Manufacturing defects. Such as centralized or casting residual stress is trachoma, aging treatment improper, thermal stress caused by the cylinder block, cylinder head, infiltration Water Leakage.
The processing method
Inspection of the cylinder block, cylinder head is a crack, or a water leak location of the cover, the use of 290~390kPa water pressure, the cooling system to carry out the pressure test, to detect the location of the crack. Different repair methods are adopted for different parts.
When the crack is in the high temperature and the stress of the larger part, such as the combustion chamber and the valve seat, the welding repair can be used.
When the crack is in the temperature is not high, the stress is not part of, can use the epoxy resin adhesive bonding repair.
4 for less force parts, if there are many small cracks together, or the emergence of small holes, the patch repair method.
The discovery of a water blocking cover all the best Water Leakage corrosion, water blocking cover replacement. When the replacement should pay attention to check the angle of the water plugging cover stamping cracks, if there are cracks should not be installed. Any kind of repair after the above, should be tested again, to confirm the non leaking party can be installed. If you do not have the conditions of repair and technical level, should be replaced with new parts.