760 L4-2320cc 2.3L SOHC Turbo B23FT (1984)
Evaporator Core: Customer Interest
A/C - Condensation Leakage on Carpet
SECTION
GROUP
NO.
87
105
DATE July, 1984
RE:
Condensation Leakage From Air Conditioner
THIS BULLETIN SUPERSEDES SERVICE BULLETIN GROUP 87 NO. 105 DATED SEPTEMBER 1983 AND IS APPLICABLE TO THE U.S.
AND CANADIAN MARKETS.
Four areas of the 760 AC unit could potentially cause condensation leakage on to the passenger side carpets.
Before attempting any of the following procedures, first determine exactly where the leak is coming from.
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The first and easiest to repair is the two evaporator connections at the firewall, which will show water marks on the inside of the firewall.
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The second area may be the seam on the rear of the evaporator housing directly above the drain tube.
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The third will show up on the sides of the tunnel most likely on the passengers side. This leak will be from the double doors and is repaired
by installing a drain pan.
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The fourth and most complicated is for extreme cases which involves removal of the entire AC/heater unit. This step will not be applicable on
units with a VIN above 41600.
The first area involves the two evaporator connections at the engine side of the firewall. Condensation could leak through the firewall seal into the
passenger compartment. This leakage should only be minor and can be corrected by using a sealant around the base of the evaporator tubes. This
prevents condensation from leaking down the tubes and past the seal.
The second most likely area of leakage is more difficult to seal. Leaks which occur in this area tend to produce more moisture than the situation
described above. A seam on the rear side of the evaporator housing directly above the drain tube, is the usual cause of leakage. If resealing is required,
remove the lower housing using the steps on the following pages.
NOTE! The humidity level has a large bearing on any condensation leakage. It may not be possible to locate leakage on a low humidity day.
