Which are main faults and causes of the radiator? The main fault of the radiator is water leakage. The main causes of water leakage are that broken or tilted blades of the fan, during operation, cause the radiator to be injured, or the radiator is not fixed, which cause the diesel engine to crack the joint of the radiator during operation. Or the cooling water contains impurities and excessive salt and the pipe wall is seriously corroded and damaged, etc.
How to find the cracks or breakages of the radiator? When the radiator leaks, the outside of the radiator should be cleaned, and then the water leakage inspection should be carried out. During inspection, except for leaving one water inlet or outlet, block all the other ports, put the radiator into the water, and then use an air pump or high-pressure air cylinder to inject about 0.5kg/cm2 of compressed air from the water inlet or outlet , If bubbles are found, it means that there are cracks or breakages.
How to repair the radiator? Before repairing, clean the leaking parts, and then use a metal brush or scraper to completely remove the metal paint and rust, and then repair it with solder. If there is a large area of water leakage at the fixing screws of the upper and lower water chambers, the upper and lower water chambers can be removed, and then two water chambers of appropriate size can be remade. Before assembling, apply adhesive or sealant on the top and bottom of the gasket, and then fix it with screws.
If the outer water pipe of the radiator is slightly damaged, soldering can generally be used to repair it. If the damage is large, needle-nose pliers can be used to clamp the pipe heads on both sides of the damaged pipe to prevent water leakage. However, the number of blocked water pipes should not be too large. Otherwise, it will affect the heat dissipation effect of the radiator. If the internal water pipe of the radiator is damaged, the upper and lower water chambers should be removed, and the water supply pipes should be replaced or welded. After the assembly is completed, the radiator must be re-checked for water leakage.
Post time: Dec-28-2021
