Ford 2003 Mustang Workshop Manual page 3089

evaporator core or A/C condenser core. Then recheck for loss of vacuum.
If a very small leak is suspected, allow the system to sit overnight with vacuum applied
and check for vacuum loss.
9. If the A/C evaporator core or A/C condenser core does leak, as verified by the above procedure,
install a new A/C evaporator core or A/C condenser core. For additional information, refer to
Section 412-03
A/C Compressor—External Leak Test
1. Install the A/C pressure test adapter on the rear head of the A/C compressor using the existing
manifold retaining bolt.
2. Connect the high and low pressure lines of a manifold gauge set or a refrigerant
recovery/recycling station such as the R-134a A/C Service Center to the corresponding fittings
on the A/C pressure test adapter.
3. Attach the center hose of the manifold gauge set to a refrigerant container standing in an
upright position.
4. Hand-rotate the compressor shaft 10 complete revolutions to distribute the oil inside the A/C
compressor.
5. Open the low pressure gauge valve, the high pressure gauge valve and the valve on the
refrigerant container to allow the refrigerant vapor to flow into the A/C compressor.
6. Using the Refrigerant Leak Detector, check for leaks at the compressor shaft seal and the
compressor center seal.
7. If a shaft seal leak is found, install a new shaft seal. For additional information, refer to
412-03 . If an external leak is found at the center joint of the A/C compressor, install a new A/C
compressor.
8. When the leak test is complete, recover the refrigerant. For additional information, refer to
Conditioning (A/C) System Recovery, Evacuation and Charging
.
in this section.
Section
Air