For 1990-2009 cars

#### Special Tools

• | J 22124-B Pressure Gage (0-300 psi)

• | J 22124-91 Pressure Gage Adapter

1. Attach the J 22124-91 pressure gage adapter to the air dryer.
2. Attach the J 22124-B pressure gage to the J 22124-91 pressure gage adapter with the toggle valve on the opposite side of the air compressor. Close the toggle valve.
3. Apply air pressure at the schrader valve. Pressurize until the J 22124-B pressure gage reads 690 kPa (100 psi).
4. Check the following areas using soap bubbles:

• | Solenoid valve -- Replace the air compressor head if leaking.

• | Air dryer to compressor head O-ring -- Replace the air dryer if leaking.

• | Air dryer cover -- Replace the air dryer if leaking.

• | Air compressor head gasket -- Replace the air compressor head if leaking.

• | Air compressor head cover gasket -- Tighten the cover bolts to 5.6 N·m (50 lb in) if the head cover gasket is leaking. If the leak persists, replace the air compressor head.