Misassembly: The machining reference surface of the two pin holes of the gear oil pump is not the assembly reference surface. If the pin is driven in first, then the screw is tightened and the pump will not move. The correct way is to turn the screw while tightening, and finally the drill pin hole and the pin pinion oil pump are not smooth.
1. Misassembly: The machining reference surface of the two pin holes of the gear oil pump is not the assembly reference surface. If the pin is driven in first, then the screw is tightened and the pump will not move. The correct way is to turn the screw while tightening, and finally drill the pin hole and drive the pin.
2. The parts inside the gear oil pump are not demagnetized: all parts must be demagnetized before assembly.
3. There is dirt in the gear oil pump: Botaibang disintegrates to remove foreign matter.
4. The working oil outlet is blocked: remove foreign matter.
5. The coaxiality difference between the pump and the engine coupling: the coaxiality should be within 0.1mm.
6. The axial clearance or radial clearance is too small: re-adjust and adjust.
7. The quality of the needle roller sleeve is unqualified or the needle roller is broken: repair or replacement.
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