2. On the pump body on the left side of the handle, there is a hexagon socket head bolt about10 mm.. Open the bolt with 10mm Allen key, which contains 5.5mm and 8mm steel balls. Take out the steel ball and check whether it is in good condition. In case of damage, replace two steel balls, tap them with a flat steel column to completely seal the steel balls and the oil circuit, and then install the hexagon socket head bolts.
3. Remove the oil drain valve bolt, take out the 5.5mm sealed steel ball inside, and check whether the steel ball is in good condition. If it is damaged, replace the steel ball, tap the steel ball with a flat steel column to make it completely sealed, and then install the oil drain valve bolt.
Extended data:
Precautions for using jack:
Jack is a safe and reliable lifting equipment, and there will be no problems under normal circumstances, but there are also the following precautions when using it:
1. The working medium of jack is generally YB-N32 hydraulic oil. When the ambient temperature is lower than 10℃, YB-N22 hydraulic oil can be used instead. When the ambient temperature is higher than 40℃, YB-N46 hydraulic oil can be used instead.
2. When working, the liquid level of the oil tank should always be kept at the center line of the oil mark to prevent the oil pump from sucking air. When refueling, use 120 mesh oil filter to filter out impurities in new oil. When frequently used, clean the oil filter once every two months, clean the oil tank once every six months, and replace it with new oil.
3. The normal working temperature of jack oil pump is 10 ~ 50℃. If the oil temperature is too high, cooling measures must be taken or the pump must be stopped; The oil temperature is too low, so heating measures or low-pressure operation are needed to improve the oil temperature.
4. Before starting the motor, change the reversing valve to the middle position. Inch several times to prevent the high-pressure pump from inhaling air, and use it only after air is removed.
5. The working pressure set by the water pump at the factory shall not be arbitrarily increased.
6. The high-pressure hoses all passed the pressure test of 1.25 times the rated pressure when leaving the factory. Due to the aging of colloid, users should pay attention to check it regularly every six months when using it for a long time. In case of leakage, bulging or explosion, it must be replaced during the pressure test. When using, you should avoid discounts and sharp bends, and at the same time, you should not be too close to the hose to prevent people from being injured by blasting.
7, water pump maintenance once a year. Clean all parts with kerosene, pay attention to protect the mating surface of the jack, and don't bump at will. After assembly, all moving parts should be flexible and free from local jamming.