- 899
- 546
The Airlift comes with instructions and you may be able to find them online. It is really simple to use. You insert it to the overflow tank opening, hook up the air compressor line, open a valve, and draw a 20 - 25 psi vacuum on the empty system, close the valve, and wait a few minutes to make sure the system holds vacuum. This is to make sure there are no leaks. You then disconnect the air compressor line and attach another fitting with a hose to a bucket of water / coolant, open the valve, and the system will fill on its own. When the vacuum gauge reads zero psi, your done. It does typically overfill the overflow tank, so I normally have to siphon some fluid back out.