Ford Fiesta: Climate Control System - General Information / Evaporator Core Leak Check. General Procedures
Special Tool(s) /
General Equipment
Air Conditioning Service Unit |
Air Conditioning Adaptor Kit |
Inspection
-
Recover the refrigerant. Refer to Air Conditioning (A/C)
System Recovery, Evacuation and Charging procedure in Group 412.
-
Disconnect the evaporator from the A/C system. Refer to
the appropriate section in Group 412 for the procedure.
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Use the correct adapters with the A/C Service Unit to test the evaporator.
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219-00082 ACF-3000 33PC Adapter Kit - Revised 1st released 44pc kit.
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219-00083 A/C Flushing Adapter Kit 2 of 3 (Previously "Supplement A", 2nd released kit).
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219-00084 A/C Flushing Adapter Kit 3 of 3.
Use the General Equipment: Air Conditioning Adaptor Kit
-
NOTE:
The automatic shut-off valves on some hoses do not
open when connected to the fittings. If available, use hoses without
shut-off valves. If hoses with shut-off valves are used, make sure the
valve opens when attached to the adapter fittings. The test is not valid
if the shut-off valve does not open.
Connect the hoses from the A/C Service Unit to the adapter fittings on the evaporator.
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265‐37887 Ritchie R134A A/C Refrigerant Hybrid Management System
Use the General Equipment: Air Conditioning Service Unit
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Open both valves and start the vacuum. Allow the A/C
Service Unit to vacuum for a minimum of 45 minutes after the low
pressure gauge indicates 101 kPa (30 in-Hg). The 45-minute evacuation is
necessary to remove any refrigerant from oil left in the evaporator. If
the refrigerant is not completely removed from the oil, outgassing will
degrade the vacuum and appear as a refrigerant leak.
-
If the low pressure gauge reading will not drop to 101 kPa (30 in-Hg) when the valves are open and the A/C
Service Unit is operating, close the valves and observe the low
pressure reading. If the pressure rises rapidly to zero, a large leak is
indicated. Recheck the adapter fitting connections before installing a
new evaporator.
-
After evacuating for 45 minutes, close the valves and
stop the service unit. Observe the low pressure gauge; it should remain
at the 101 kPa (30 in-Hg) mark.
-
If the low pressure gauge reading rises 34 or more
kPa (10 or more in-Hg) of vacuum from the 101 kPa (30 in-Hg) position in
10 minutes, a leak is indicated.
-
If a very small leak is suspected, wait 30 minutes and observe the vacuum gauge.
-
If a small amount of vacuum is lost, operate the
service unit with the valves open for an additional 30 minutes to remove
any remaining refrigerant from the oil in the evaporator. 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.
-
If the evaporator leaks, as verified by the above
procedure, install a new evaporator. Refer to Evaporator procedure in
Group 412.
Special Tool(s) /
General Equipment
Electronic Leak Detector
Inspection
NOTE:
Use a Rotunda-approved Electronic Leak Detector for R-134a refrigerant SAE Certified to J2791...
Special Tool(s) /
General Equipment
UV Leak Detector
Electronic Leak Detector
Leak detection
Vehicles with air conditioning
Review next note for important refrigerant system dye information...
Other information:
Removal
NOTE:
Removal steps in this procedure may contain installation details.
Remove the heater core and evaporator core housing - vehicles with: EMTC .
Refer to: Heater Core and Evaporator Core Housing - Vehicles With:
Electronic Manual Temperature Control (EMTC) (412-00 Climate Control
System - General Information, Removal and Installation)...
Removal
Remove the windshield wiper pivot arm.
Refer to: Windshield Wiper Pivot Arm (501-16 Wipers and Washers, Removal and Installation).
Release the clip and position the weatherstrip aside.
Remove the cowl panel grille...
Categories
Preliminary Inspection
Verify the customer concern by carrying out a road test on a
smooth road. If any vibrations are apparent, Refer to the Symptom
Chart: NVH.
To maximize tire performance, inspect for signs of incorrect
inflation and uneven wear, which may indicate a need for balancing,
rotation or front suspension alignment.
Correct tire pressure and driving techniques have an
important influence on tire life. Heavy cornering, excessively rapid
acceleration and unnecessary sharp braking increase tire wear.
Correct
tire pressure and driving techniques have an important influence on
tire life. Heavy cornering, exce
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