1, check the pump body and belt wheel wear and damage, if necessary, should be replaced. Check the northern part of Baotou water pump shaft with no bending, shaft neck wear, shaft end thread with no damage. Check the blade on the impeller there is no broken, shaft hole wear is serious. 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 bearing wear, the available table measurement of the clearance of the bearing, such as more than 0.10mm, you should replace the new bearing.
2, after the Baotou North rush to pump out the accessories, can be decomposed in order. After the decomposition of parts should be cleaned, and then one by one check to see if there are cracks, damage and wear and other defects, such as serious defects should be replaced.
3, in the pump body has the following injury to 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. Beiben heavy truck pump shaft shall not be bent over 0.05mm, otherwise it should be replaced. Impeller blade damage should be replaced. Water pump shaft aperture serious wear should be replaced or set to repair.
4, check the Baotou North rush parts water pump bearings are flexible or abnormal sound, if there are problems, should be replaced.
5, 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. In the overhaul should be replaced with new seal assembly.
6, after the pump assembly is good, with the hand rotation, pump shaft no card lag, impeller and pump shell without rubbing. Then check the pump displacement beiben heavy truck, if there is a problem, should check the reasons and exclude. If the North Pennines heavy truck pump failure, the coolant will arrive at the corresponding place to, its performance is not effectively play, thus affecting the working condition of the engine. Therefore, it is necessary to strengthen the inspection of the pump.