During the use of manual pumps, there may be some malfunction problems if used for a long time. So, how can we prevent these problems during application?
1. Add or replace engine oil of the required grade according to the season to the specified oil level. Remove foreign objects from the oil pipe and tighten the bolts or nuts at the joint.
2. Replace the worn gear oil pump or oil pump shaft sleeve with a manual pump. If the wear is slight, grind the end face flat on a flat plate. The allowable unevenness error is 0.03mm; The end face of the upper shaft sleeve is lower than the upper plane of the manual hydraulic pump body (normal value is less than 2.5-2.6mm). If it exceeds the tolerance, a 10.1-0.2mm copper plate should be added to the lower shaft sleeve to compensate. During installation, it should be installed on the rear shaft sleeve.
3. The unloading plate and sealing ring of the manual pump must be installed in the oil inlet chamber to maintain balance between the two shaft sleeves. The unloading plate sealing ring should have a preload of 0.5mm.
