Manual pump oil pump failure and troubleshooting

The phenomenon of failure

main reason

Elimination method

1, lack of pressure or no pressure. When the lever is shaken, the cylinder does not work or the rated pressure cannot be output. 1, the high pressure valve pressure adjustment is too low Check the pressure of the hydraulic system with a pressure gauge, if the pressure is less than 63MPa can tighten the pressure valve screw, so that the pressure reaches the specified value. 2. High-pressure valve spring is damaged or loses elasticity. Replace high-pressure valve spring. 3. High-pressure valve is worn with slight wear. Revise the method: Correct the method: Tap the steel ball with precision one time 1-2 times, such as wear Seriously, it can be re-drilled with a drill bit, if serious pump body scrapped again. 4, the unloading valve Ver port has a slight wear repair Versailles, the revised method: hand tapping the first precision ball 1-2 times, such as serious wear, can be re-drilled with a bit, such as a serious pump Retired. 5. Replace the plunger hole of the oil pump and replace the plunger to correct the plunger hole. 2. The oil pump suddenly drops in volume and pressure during use. 1. The high pressure spring is permanently deformed or broken. Replace the high pressure valve spring 2. The low pressure valve spring is permanently deformed or broken. Replace the low pressure valve spring 3. The low pressure valve contains impurities that damage the check valve, check valve and low pressure valve. Hermetically dissociated oil pump, cleaned with gasoline or light oil, reassembled and inject clean fluid 3, the oil pump reduces the amount of oil, the pressure at low pressure is insufficient or there is no pressure. 1. The low pressure valve spring is damaged or the spring force is replaced to replace the low pressure valve spring 2. The low pressure valve has a slight wear correcting valve, and the oil supply is interrupted and weak noise occurs. 1, the oil level is too low, absorb air to fill the oil, increase the oil level 2, the suction inlet is blocked to remove impurities from the suction inlet, 3, the air release valve is closed, the air pressure in the oil storage tube is reduced, the air release valve is opened, and the plunger and the pressure rod are automatically returned bomb. 1, one-way valve Ver port has a slight wear correction Ver Port 2, check valve spring loses elasticity or damage replace one-way valve spring 3, one-way valve valve er mouth particle impurity cleaning check valve 6, static pressure When used, the pressure drops slowly. Failure of each seal to check the seals, tighten the screws or replace the apron 7, there is pressure phenomenon. Insufficient exhaust air pressure pump several times to rule out the stomach