Mechanical engineering recommended A6VTG071 Rexroth hydraulic pump

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Secondary analysis of A6VTG071 Rexroth hydraulic pump hydraulic pump fault reasons and suppliers:

Failure reason: inner leakage of oil pump and aging of sealing ring;

Troubleshooting: change the sealing ring

Fault reason: oil pump end face or main and driven gear sleeve end face wear or scratch, two sleeve end roughness is over;

Elimination method: replace the worn gear oil pump or oil pump shaft sleeve, and wear the end face of the flat plate when the wear is slight.

The roughness allowed error 0.03mm; the upper sleeve end surface is lower than the pump body, the upper plane (normal value is less than 2.5~2.6mm), such as ultra poor, should be under the axle sleeve and 0.1~0.2mm copper to compensate, installation should be installed on the sleeve after loading.

Two level technical maintenance of piston pump maintenance:

1. Cleaning piston, piston pin, cylinder sleeve, piston ring, connecting rod bearing and checking its wear condition.

2, check the rolling main bearing internal and external ring is not loose phenomenon.

3. Remove scale and sediment in the channel of cooling water system.

4. Removal of carbon deposits in cylinder combustion chamber and intake and exhaust ducts.

5, check the valve, valve seat, push rod and rocker and other wear conditions, and grinding adjustment.

6, cleaning the turbocharger rotor coke, check the bearing and impeller wear, if necessary, should be repaired.

7, check the generator and diesel engine coupling bolt is loose, so, found the problem should be repaired.