ZF Hydraulic & Pneumatic parts Co., Ltd

ZF Hydraulic & Pneumatic parts Co., Ltd

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How to deal with the circular arc gear pump used in failure

Author : Mr William Date : 8/21/2014 9:11:02 PM
How to deal with the circular arc gear pump used in failure
If some problem with one of the circular arc gear pump in use, you should be how to deal with?ZF Hydraulic for you to analysis and solve the problem of some daily to.
Circular arc gear pump drive shaft and bushing wear, increase the tolerance clearance, will affect oil pump. In case, methods of drive shaft and bushing can be used to restore the normal fit clearance. If the drive shaft wear light, simply press out the old bushings with standard size liner, fit clearance can be restored to allow range. If the circular arc gear pump drive shaft and bushing wear serious and fit clearance exceeds bid badly, not only to replace the bushing, and drive shaft and chrome plated or vibration welding method was applied to be diameter increase, and then grinding to the standard size, recovery and bushing with requirements. Circular arc gear pump shaft bushing hole after wear, ream method to eliminate the wear marks are available, and then with increasing to the corresponding size of the bushing. The driven shaft hole wear also to ream method to eliminate wear trace, and then press ream holes after the actual size of configuration driven shaft. Circular arc gear pump pump shell lumen after wear, generally adopt the inner cavity set of method to repair, the inner cavity lining lined with iron or steel sleeves. Big set set, will repair technicians to inner cavity 5, seat: pressure limiting valve with ball valve and the plunger valve two kinds.Spherical valve seat wear, can put a ball seat, and then gently tap on a steel ball with metal rods, until a ball valve and valve seat seal.Such as seat wear serious, can ream first remove the grinding crack, using method of closed again.Plunger valve seat wear, can put a few valve sand grinding, until it is closed.Shell crack can be cast 508 nickel copper electrode welding repair.Weld shall be closely and yuan pores, combined with the pump cover surface flatness error is not more.
The above:How to deal with the circular arc gear pump used in failure