Lincoln Aviator: Climate Control System - General Information / General Procedures - Air Conditioning (A/C) System Leak Test Using Forming Gas - Vehicles With: R134A Refrigerant/R1234YF Refrigerant
Special Tool(s) /
General Equipment
Forming Gas Pressure Gauge and Leak Detector |
Materials
Name |
Specification |
Forming Gas |
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|
Leak detection
All vehicles
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NOTE:
Use a Rotunda-approved Tracer Gas A/C System Dealership Leak Detection Service Kit that meets SAE J2790.
Recover the refrigerant. Refer to the appropriate Recovery procedure in Group 412.
Hybrid\Electric vehicles
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Electric or Hybrid vehicle with a battery chiller.
It may be necessary to activate the battery chiller(s) to open the
solenoid(s) to allow vacuum and gas to pass through to chiller for leak
testing. Refer to shop manual refrigerant reclaim and charging to see if
solenoid(s) activation is necessary. Follow the shop manual procedure
to perform activation if needed.
All vehicles
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Perform the vacuum leak test in accordance with the service unit manufacturer instructions.
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Assemble tracer gas leak detection kit per manufacturer instructions.
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Connect the forming gas pressure gauge and leak
detector service hose to the high-pressure port of the air conditioning
system in accordance with the manufacturer instructions.
Use the General Equipment: Forming Gas Pressure Gauge and Leak Detector
Material: Forming Gas
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NOTICE:
Make sure that the pressure reducer (2) is closed.
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Open the bottle valve.
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Slowly turn the pressure reducer until a
pressure of 4.1 bar (60 psi) is reached. Maintain open for 30 seconds to
allow tracer gas to fill system.
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Close the bottle valve.
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Model D740KIT - Tracer Gas A\C System Dealership Leak Detection Service Kit
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Leak test the refrigerant system. Follow the
instructions included with the Leak Detector for handling and operation
techniques.
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NOTE:
Trace gas is lighter than air, and tends to move
up from the source of the leak. It is possible that a leak may not be
detected if the leak detector tip is held below the leaking fitting,
line or component. Always be sure to thoroughly leak test below, above
and around the fitting, line or component.
Disconnect the forming gas pressure gauge and leak
detector from the air conditioning system in accordance with the
manufacturer instructions.
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NOTICE:
Do not ever recover the tracer gas into the A/C recovery/charging machine.
NOTE:
Discharge the H2/N2 tracer gas into the atmosphere after the system leak/s are located.
Charge the system with the appropriate refrigerant
only after the leak/s are repaired and retested with the H2/N2 tracer
gas and the model D740 leak detector. Refer to the appropriate
Recharging procedure in Group 412.
Special Tool(s) /
General Equipment
Air Conditioning Flush and Purge Service Unit
Air Conditioning Adaptor Kit
Materials
Name
Specification
Motorcraft® A/C System Flushing SolventYN-23
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Flushing
NOTICE:
Use the Refrigerant Identification Equipment before
recovering any of the vehicle's refrigerant...
Special Tool(s) /
General Equipment
Air Conditioning Service Unit
Refrigerant Identification Equipment
Check
NOTE:
For all equipment, follow the manufacturer's instructions...
Other information:
Materials
Name
Specification
Motorcraft® Metal Brake Parts CleanerPM-4-A, PM-4-B
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Removal
WARNING:
Service actions on vehicles equipped with electronic brake
booster and electronic parking brakes may cause unexpected brake
application, which could result in injury to hands or fingers...
Special Tool(s) /
General Equipment
Flat Headed Screw Driver
Removal
NOTE:
Removal steps in this procedure may contain installation details.
Exterior mirror assembly
Remove the front door interior trim panel.
Refer to: Front Door Trim Panel (501-05 Interior Trim and Ornamentation, Removal and Installation)...