Why my BIG RED JACKS Jack will not lift load?
- KKenneth CombsJul 29, 2025
If your BIG RED JACKS Jack won't lift the load, there are several potential reasons. First, make sure the release valve is completely closed by turning the handle clockwise. It's also possible that you've exceeded the weight capacity. Another cause might be air in the hydraulics, in which case you should purge the air from the system. Check the oil level and add oil if needed. Finally, the power unit may be malfunctioning, requiring replacement.