Introduction to the steps of gear oil pump overhaul

1、 Dismantling of gear oil pump

Before disassembling the gear oil pump, sufficient preparation work should be done, familiar with the equipment structure, process flow, and operating status; Caution should be taken during disassembly to avoid damaging equipment components.

2、 Recheck data of gear oil pump

The clearance between the components of the gear oil pump should be checked.

3、 Gear oil pump inspection

Conduct a detailed inspection of the components removed from the gear oil pump, perform a color check on the gears, and ensure that there are no cracks present; The conicity of the shaft neck is qualified, and there should be no scratches on the surface. The maximum allowable roughness Ra is 1.6 μ m; The end cap, bracket, and pump body shall not have obvious defects.

4、 Or change

Parts that exceed the standard should be replaced, and parts that need to be replaced should meet the standard.

5、 Assembly and adjustment of gear oil pump

The axial clearance between the gear end face, end cover, and bracket is adjusted by changing the thickness of the sealing gasket between the end cover, bracket, and pump body; When tightening the end cap bolts, apply symmetrical and even force, and rotate the rotor while tightening. If the rotor cannot rotate, loosen the bolts and tighten them again; When adding packing or installing oil seals, it is still necessary to tighten and rotate the rotor while tightening the cover, and not tighten it too tightly.

6、 Gear oil pump test run

The water pressure test is conducted at 1.5 times the working pressure, and there is no leakage for 5 minutes. During the trial operation, there is no leakage, normal operating sound, and no abnormal vibration. If the outlet pressure meets the requirements, it is considered qualified.