Air Compressor Leak Test

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

J 22124-B Pressure Gauge (0-300 psi)
J 22124-91 Pressure Gauge Adapter

Attach the J 22124-91 to the air dryer.
Attach the J 22124-B to the J 22124-91 with the toggle valve on the opposite side of the air compressor. Close the toggle valve.
Apply air pressure at the schrader valve. Pressurize until the J 22124-B reads 690 kPa (100 psi).
Check the following areas using soap bubbles:
- Solenoid valve
- Air dryer to compressor head O-ring
- Air dryer cover
- Air compressor head gasket
- Air compressor head cover-If necessary, tighten the cover bolts to 5.6 N.m (50 lb in).

If a leak is found, replace the air compressor. Refer to Air Compressor Replacement .