1. Check the pump casing and impeller
The pump casing should not have serious cracks, the crack length should not exceed 30mm, and it should not extend to the edge of the bearing seat hole. If the above conditions are met, brass alloy welding rods can be used for welding. The pump casing should also be preheated before welding to prevent deformation after welding. If the above conditions are not met, the pump casing should be replaced. Only one impeller is allowed to be damaged, and more than two impellers must be replaced.
2. Check the fit between the
water pump shaft and the impeller hole
The water pump shaft and the impeller hole are interference fit. If the impeller and the shaft are loose, they should be repaired. The repair process is generally to increase the size of the shaft by tinning. The specific technical requirements are: after the impeller is installed on the shaft, the end face of the impeller should be 0.1~0.5mm higher than the water pump shaft.
3. Check the bakelite ring seat in the water pump casing
Check whether there are spots or wear marks on the bakelite ring seat in the water pump casing. If there are, you can file it with a file or lathe it.
4. Check the bearing wear
The radial clearance cannot exceed 0.10mm, and the axial clearance cannot exceed 0.30mm, otherwise the bearing should be replaced.
5. Check the water seal
If the bakelite pad is worn and grooved, the spring elasticity is too soft, the rubber sleeve is swollen and damaged, etc., it should be replaced with a new part. If the bakelite pad is not seriously worn, it can be adjusted or smoothed before use.
The above is the diesel generator water pump maintenance method introduced by Huaquan Power. For more information, please visit:
http://www.zhaofdj.com/
