Repair YCB gear pump drive shaft worn with bushing

1, repair YCB gear oil pump drive shaft and bushing after wear

Drive shaft and bushing wear clearance increases, is bound to affect the fuel pump gear pump after.

This condition can be used to repair the drive shaft or bushing method to restore its normal fit clearance.

If activity shaft wearing old bushings standard size only slight pressure bushing after replacement, with the gap can be restored to allow range, not only to replace the bushing if the drive shaft and bushing wear serious, and clearance exceeds bid badly, the drive shaft and also applying chrome or vibration welding method, in order to increase its diameter, then grinding to the standard size, recovery and bushing chimeric requirements.

2. Repair the oil pump shell cracks in the shell

Pump shell cracks can be welded with cast 508 nickel-copper electrode welding repair welding should be closed pores and oil pump and water pump surface roughness error less than 0.05mm of the combination of the front elements.

With driven shaft hole wear repair 3, gear oil pump drive shaft bushing hole

Tanker gear pump active shaft bushing hole wear can be used after reaming method eliminates signs of wear and is fitted with a corresponding increase in bush size.

Also driven shaft perforation reaming method reaming according to the driven shaft of the preparation after the actual size of the hole to eliminate signs of wear.

4, pump shell repair gear oil pump room gear oil pump shell screw pump is generally taken after wear cavity sleeve repair, the inner cavity is lined with lined gray cast iron or steel flat window cavity lining, after the repair of the seat: pressure limiting valve ball valve and piston valve two.

A ball after the ball seat wear can be placed on the seat, then gently hit with a metal bar, until the ball spool with the seat fit the seat wear can be severe hinge removal puncture mark, then close contact plunger type back seat wear can put a small valve grinding sand tight.

5. Repair the cover of the gear oil pump

Pump repair work plane: KCB gear pump, if the pump covers the machining surface with small wear, manual grinding method can be used to eliminate signs of wear, put a small valve sand on the platform or thick glass plate, and then placed on the top of the pump head for polishing until the wear eliminates the traces of the working surface is flat.

When the pump cover is machined and worn to a depth greater than 0.1mm the first turning point should be taken by way of grinding to repair.