Customer Reviews for VEVOR Air Hydraulic Bottle Jack, 20 Ton/40000 LBS All Welded Bottle Jack, 10.4-19.7 inch Lifting Range, Manual Handle and Air Pump, for Car, Pickup, Truck, RV, Auto Repair, Industrial Engineering
Found this while looking for a jack for my homemade shop press. It works great when it's warm but not so much when it's cold. I had to take apart the pneumatic part and clean some of the "grease" out to make it work better. I will have to take it apart periodically to regrease it.
After unboxing, the hydraulic pump worked but the pneumatic motor did not. The diagram looked simple enough so I disassembled the air motor. The piston was very, very tight. I removed all the grease and cleaned the cylinder and piston, replaced with pneumatic oil, also primed the small pneumatic piston with oil, reassembled and then it worked. I didn't want to be bothered with returning the item. Pneumatic function is slower than expected at 150psi. Possibly because the factory air fitting is a larger diameter than what I have on all my other air tools.
I absolutely hate jacking up cars with the jacks that come with them. This one here is a huge time and effort saver. It takes a lot more air from my compressor than I thought it would, but still does the job just fine. Highly recommend.