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Home >> Cadillac >> 2007 >> STS Base, 4.6 A, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Suspension Control System - Automatic Level Control) >> Diagnostic Information and Procedures >> Air Compressor Leak Test

Air Compressor Leak Test

WARNING: This page is about a different car, the 2008 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

  1. Attach the J 22124-91  pressure gauge adapter to the air dryer. See Special Tools .
  2. Attach the J 22124-B  pressure gauge to the J 22124-91  pressure gauge adapter with the toggle valve on the opposite side of the air compressor. See Special Tools . Close the toggle valve.
  3. Apply air pressure at the schrader valve. Pressurize until the J 22124-B  pressure gauge reads 690 kPa (100 psi). See Special Tools .
  4. 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 .

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