Thunderbird V8-281 4.6L SOHC (1994)
Evaporator Core: All Technical Service Bulletins
A/C Evaporator Core - On Vehicle Leak Test Requirement
Article No.
95-13-1
07/03/95
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AIR CONDITIONING - EVAPORATOR CORE - "ON-VEHICLE" LEAK TEST REQUIRED FOR WARRANTY CLAIM
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AIR CONDITIONING - "ON-VEHICLE" EVAPORATOR CORE LEAK TEST REQUIRED FOR WARRANTY CLAIM
FORD:
1992-93 FESTIVA
1992-94 TEMPO
1992-95 CROWN VICTORIA, ESCORT, MUSTANG, PROBE, TAURUS, THUNDERBIRD
1994-95 ASPIRE
1995 CONTOUR
LINCOLN-MERCURY:
1992 MARK VII
1992-94 CAPRI, TOPAZ
1992-95 CONTINENTAL, COUGAR, GRAND MARQUIS, SABLE, TOWN CAR, TRACER
1993-95 MARK VIII
1995 MYSTIQUE
LIGHT TRUCK:
1992-95 AEROSTAR, BRONCO, ECONOLINE, EXPLORER, F-150-350 SERIES, F-47, RANGER
1993-95 VILLAGER
1995 WINDSTAR
This TSB article is being republished in its entirety to correct the referenced Step for the cleaning procedure.
ISSUE:
An "on-vehicle" air conditioning evaporator core leak test is required before replacing any A/C evaporator core within the warranty period.
ACTION:
Perform the "on-vehicle" air conditioning evaporator core leak test before replacing the evaporator core. Refer to the following Evaporator Core Leak
Test Procedure.
EVAPORATOR CORE LEAK TEST PROCEDURE
NOTE:
ALL FITTINGS REQUIRED TO PERFORM THE LEAK TEST ARE INCLUDED IN TEST ADAPTER KIT D93L-1 9703-B OR EQUIVALENT.
CAUTION:
DISCONNECT THE LIQUID LINE AND SUCTION ACCUMULATOR FROM THE EVAPORATOR CORE TUBES. DO NOT LEAK TEST
AN EVAPORATOR CORE WITH THE SUCTION ACCUMULATOR ATTACHED TO THE CORE TUBES. REFRIGERANT OUTGASSING
FROM OIL AND DESICCANT IN THE ACCUMULATOR WILL INDICATE A FALSE LEAK CONDITION.
1.
Verify that the manifold gauge set is capable of holding vacuum.
a.
Connect the RED and BLUE hoses together using a 1/4" (6.35 mm) flare coupling.
b.
Connect the gauge set YELLOW hose to a known good vacuum pump.
c.
Turn the vacuum pump ON and open both gauge set valves.
d.
Operate the vacuum pump for 1 minute and close both gauge set valves. The low side gauge should indicate approximately 30" of vacuum.
e.
Allow the gauge set, with vacuum applied, to sit for at least 30 minutes.
f.
If the gauge reading drops during that time, the gauge set hose connections, gauges, or valves are leaking and should be repaired before
proceeding with the leak test.
