How to Use a Hydraulic Jack?
2 Answers
Insert the grooved end of the handle into the release valve and rotate it clockwise to tighten the valve. Estimate the weight, determine the center of gravity of the object to be lifted, select the focal point, and correctly position the lifting point. Remove the handle from the handle sleeve, insert it into the release valve, and slowly turn the handle counterclockwise to loosen the release valve. Lower the jack slowly.
I often use a hydraulic jack to change tires, and experience tells me safety comes first. First, find a flat and hard surface to park, pull the handbrake and turn off the engine to ensure the vehicle is stable and immobile. The jack must be placed at the correct lifting point of the vehicle, usually under the door where there is a reinforced metal area—align it properly to avoid damaging the chassis. Then, use the handle to pump the hydraulic part up and down repeatedly, and it will gradually lift the car, relying on the hydraulic principle of internal piston operation. After lifting, don’t rush to crawl under the car for repairs, as the jack may be unstable or leak oil—immediately use stable blocks or stands to support the frame for added safety. Operate slowly; pumping too fast can cause the car to shake. Once done, open the pressure release valve to let the oil flow back slowly, allowing the car to descend smoothly—don’t let it drop freely. I also recommend regularly checking the hydraulic oil level of the jack and adding oil for maintenance to prevent aging. Take your time during the whole process—beginners should read the manual carefully or ask for assistance to avoid accidents and delays.
