Manual hydraulic jack with the electric pump and the organic combination, both the fast oil pump, but also a manual pump of micro feed, manual and electric between the use of flexible, can be used in the process of making use of the process will always encounter the phenomenon of hydraulic jack lifting speed is slow, so should be how to solve it?

Appear this kind of phenomenon is generally pump oil content caused by too little, according to the model of pump to add the need for hydraulic oil pump relief pressure valve without tightening ring hydraulic connector loosening is not tightened. Again is the need to carefully check each interface is oil ring joint loosening. Manual hydraulic jack is unable to return to shrink or slow the need to check the pressure relief valve did not open, the amount of oil in the tank is not too much, according to the fuel tank size to store the retraction of the hydraulic oil were observed hydraulic connector has not been tightened.