What to do if my Snap-On Jack will not lift or sustain the rated load?
- SStephen ClarkAug 3, 2025
If your Snap-On Jack isn't lifting or sustaining its rated load, there are several potential causes. First, ensure the release valve is completely tightened by rotating the handle clockwise until it stops. Then, try pumping the jack. If that doesn't work, air might be trapped in the hydraulic system; follow step 3 on page 6 of this manual to remove the trapped air. Also, ensure that you are using the proper rated capacity jack for the application, as the load may exceed the jack's capacity. If the check ball valve is not seating properly, call Tech Service.