亚洲爆乳成人无码AAA片漫画,老师强奷女同学BD高清,国内精品久久久一区二区,亞洲中文字幕av

What you will do when water pump overhaul of wheel and axis ?


A: the waterwheel check, you should inspect the following items:


(1) flow channel and the former, HouGaiBan should be clean;


(2) check the turbine blade for flushing, crack, cavitation and deformation;


(3) the water wheel inner hole wear, elliptic, cooperate with axial clearance should comply with the standards, burr should repair smooth;


(4) the mouth ring and wheel hub for wear and excessive pumping, such as the serious wear and tear, should be turning, to compound sealing ring, impeller for static balance when necessary;


(5) for multi-stage pump, each wheel should also measure the impeller wheel hub of two end face of the parallelism and perpendicularity of shaft centerline, whether smooth.


For shaft should inspect the following items:


(1) the shaft surface clean;


(2) check the keyway, shoulder relief groove and R Angle and the surface crack, when it is necessary for metal detection;


(3) the shaft bending value should comply with the standards;


(4) the diameter of axle should be smooth without wear, scratch, cooperate with rotating parts of the surface should be no serious rust, wear and ellipse, fit clearance up to the standard.All the parts of the shaft thread is in good condition, and the mother with flexible, elastic moderate.