Other information:
Leak detection
Recover the refrigerant. Refer to Air Conditioning (A/C)
System Recovery, Evacuation and Charging procedure in Group 412.
Disconnect the refrigerant lines from the A/C compressor. Refer to the appropriate section in Group 412 for the procedure...
Inspection
NOTE:
Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.
Clean and inspect the (1) ring lands, (2) pin bosses,
(3) skirts and the (4) tops of the pistons. If wear marks, scores or
glazing is found on the piston skirt, check for a bent or twisted
connecting rod...