Mountaineer 4WD V6-4.0L VIN E (1999)
1. Install the A/C tube lock coupling spring.
2. Lubricate the inside of the coupling with PAG compressor oil YN-12-C F7AZ-19589-DA or equivalent meeting Ford specification
WSH-M1C231-B.
3. Install the O-ring seals.
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Lubricate the O-ring seals with PAG compressor oil YN-12-C F7AZ-19589-DA or equivalent meeting Ford specification WSH-M1C231-B.
CAUTION: Use only new green O-ring seals. The use of any O-ring seals other than specified may result in intermittent leakage during vehicle
operation.
4. Connect the spring lock coupling fittings with a twisting motion until the A/C tube lock coupling spring snaps over the flared end of the female
fitting.
