Oil pump nozzles and troubleshooting methods

 
The fault of the oil pump nozzle and the troubleshooting method, the oil pump nozzle accessories factory to introduce it for you:

What are the faults of the oil pump nozzles?

1. The oil level of the hydraulic oil tank is too low; Not using hydraulic oil seasonally; 2. The inlet pipe is seriously blocked by dirt; 3. The oil seal of the driving gear of the oil pump is damaged and air enters the hydraulic system; 4, oil pump inlet and outlet joint or bend joint "O" seal ring damage, bend joint fastening bolts or inlet and outlet pipe nut is not tightened, air into the hydraulic system; 5. The end faces of the oil pump or the shaft bushing of the main and driven gears are worn or scratched, and the end faces of the two shaft bushing are out of tolerance; Oil pump internal parts assembly error caused by internal leakage.

Troubleshooting methods for oil pump nozzles:

1. Add or replace the required brand oil to the specified oil level according to the season. Remove the foreign body in the oil pipe and tighten the bolt or nut at the joint;

2. Replace the worn gear oil pump or oil pump shaft sleeve, and smooth the end face on the flat plate when the wear is slight. The allowable error of its roughness is 0.03mm; The end face of the upper shaft sleeve is lower than the upper plane of the pump body (the normal value is lower than 2.5-2.6mm). If the error is exceeded, 0.1 ~ 0.2mm copper sheet should be added to the lower shaft sleeve to compensate.

3, the guide wire elastic force should be able to be at the same time, the upper and lower shaft sleeve toward the driven gear rotation direction to twist a small Angle, so that the main and driven gear two shaft sleeve processing plane closely fit;

4. The unloading groove on the axle sleeve must be installed on the side of the low-pressure chamber to eliminate the harmful dead volume caused by gear meshing; Before pressing into the self-tightening oil seal, a layer of lubricating oil should be coated on its surface, and pay attention to cover the oil resistance edge towards the front, not the reverse;

5. Before installing the oil pump cover and tightening the bolts, check whether the clearance between the pump cover and the pump body is between 0.3 ~ 0.6mm. If the clearance is too small, replace the large sealing ring and pressure relief parts. After the installation of the hydraulic pump, should be flexible rotation without stuck phenomenon.