Checking the wear of the pump journal is determined by measuring what it is
4. in the pump body has the following: allow welding repair length within 3Omm, does not extend to crack the bearing seat hole; a breaking part and a flange joint of the cylinder cover; oil seal seat hole damage. Water pump shaft bending shall not exceed 0.05mm, otherwise it should be replaced. Impeller blade damage should be replaced. Pump shaft bore wear seriously, should be replaced or inserted repair.5. check whether the water pump bearings are flexible or abnormal sound, if it shows that the bearings have problems, should be replaced.6., pump assembly, hand rotation, the pump shaft should be stuck, impeller and pump shell should be no rub. Then check the water pump displacement, if there is a problem, should check the reasons and ruled out.
2. after the pump is removed, it can be decomposed in sequence. After decomposition, parts should be cleaned and checked one by one to see if there are cracks, damage and wear. If there is a serious defect, they should be replaced.3. repair water seal and seat seal: such as wear groove, available emery cloth grinding, such as too much wear should be replaced; seal seat as coarse scratches, available plane or repair in the lathe reamer. New water seal components should be replaced during overhaul.
When the car is in use, if the water pump fails or damages, you can do the following inspection and repair.1. check the pump body and pulley for wear and damage, and replace them when necessary. Check whether the water pump shaft bending, shaft wear degree, shaft end thread damage. Check whether the blade on the impeller is broken and whether the shaft bore is worn seriously. Check the degree of wear of seal and bakelite washer, such as more than the use of limit should be replaced with new parts. Check the wear of the bearings. Measure the gap of the bearings. If more than 0.10mm, the new bearings should be replaced.
