Air Bag Jacks are a unique design that uses compressed air to raise and lower motor vehicles quickly and easily. They have been around for a long time and if made with quality parts, they can be pretty safe. Their speed makes air jacks the ideal choice for under-body servicing, wheel alignment, tire replacement services, and body repair work if used with jack stands.
All of the other models of these we have seen use two push-button valves make the air jacks quick and easy to operate. This model we purchased uses two 1/4 turn ball valves to do the raising and lowering. Their speed of operation over conventional jacks will significantly reduce the time required to lift a vehicle. Also, this model has a handle that moves, so the tubing used to inflate the air bag might get worn over time and fail.
Inside the air jack, there is a unique internal telescopic stabilizing column. This column provides stability to the jack during elevation but still allows some lateral movement, which enables the head cap of the jack to follow the arc of the vehicle being elevated. This feature combined with a wide base gives maximum stability on hard or soft surfaces. When these internal structures do not have a lot of quality built into them, they become less and less safe!
There are few instructions with this jack, but the working pressure for the air jacks is 100 psi. The safety valve is supposed to prevent the air jack from being accidentally overloaded or over inflated. Will the quality of the safety valve insure that will happen over the long run?
There are very few moving parts in this air bag jack. Maintenance costs associated with the air jacks are minimal, but keeping an eye on the tubing and wear points is essential. The air springs are made of a neoprene rubber that is oil and ozone resistant.
Once in a lifted position, the air line can be disconnected and the jack will continue to do its job, but you should never rely on this jack alone to hold up anything you are under!
If you choose to use these, BE SAFE!