Remove compressor from vehicle observing all safety precautions.
Remove complete clutch assembly, including field coil, from compressor.
Install Pressure Test Adapters D88L-19703-A or equivalent on compressor.
Compressor Testing for External Leaks
Connect high and low pressure hoses of a manifold gauge set to fittings of
pressure test adapters.
Attach center hose of manifold gauge set to a refrigerant drum standing in
an upright position.
NOTE: Prior to leak testing the shaft seal, turn the compressor shaft 10
revolutions to distribute the oil within the compressor.
Open low pressure gauge valve, high pressure gauge valve, and valve on
refrigerant drum to allow refrigerant vapor to flow into compressor.
Using Rotunda Leak Detector 055-00015 or equivalent, check for leaks at
compressor rear head seal, compressor front head seal, compressor shaft seal,
center joint seal and around compressor cylinder bolts. After checking, turn
off manifold gauge valves and the refrigerant drum valve.
If an external leak is found at either head or at shaft seal, service as
necessary. If an external leak is found at center joint of compressor body,
install a new compressor assembly.
If refrigerant leak is found around head of a cylinder bolt, install a new
brass washer on bolt and leak test as outlined. If leak cannot be corrected
with a new brass washer, install a new head, new cylinder bolt, and new brass
washers on all bolts.
Carefully disconnect manifold gauge hoses from the pressure
fitting/adapters, allowing the refrigerant to escape. Remove the adapters from
compressor.
