How to disassemble the engine water pump impeller?
(4) use two ball bearings to support the structure of the water pump shaft. The outer diameter of the bearing locating ring shall be measured in advance. If the diameter is less than the seal seat hole on the pump casing, impeller and magnetic water can be together from the pump cover side pressure; ring seal seat hole diameter greater than the pump casing, the impeller is available to pull from the pump shaft removed. The integral structure of pump shaft and bearing, if the bearing is provided with a clamping ring, the middle from the bearing seat at the cutting groove supporting a ring after extrusion pump shaft.(5) the graphite sealing ring is used to seal the water on one side of the pump cover. Some domestic automobile engine pumps adopt combined water seals, and the water seal parts are installed in the impeller. The snap rings can be removed to remove the parts.(6) the assembly of pumps shall be reversed in reverse order. After the assembly, rotating pulley by hand, should be flexible card hysteresis phenomenon; shake the pulley, the pump shaft should not have obvious Songkuang; check the drainage hole Yingtong Yang; finally from the grease nozzle into the specified amount of grease. If there is a condition, the water pump should be checked on the experimental platform after the repair.
(1) remove the drive belt, remove the fan pulley, fastening nuts and gaskets, remove the fan pulley and wheel with the puller, and pay attention to the semicircle key.(2) remove the pump cover retaining bolts, remove the pump cover and gasket.(3) the impeller is detached from the pump shaft for the structure of the impeller which is attached to the pump shaft. For fastening the impeller to the water pump shaft with bolts, unscrew the bolt first, and then remove the impeller with the puller.
The structure of water pump is relatively simple, but it should pay attention to the difference of structure and the requirement of process when disassembling and repair. The general procedure of disassembly and assembly and the following points for attention are as follows:
