F 450 4WD Super Duty V10-6.8L VIN Z CNG (2003)
SPECIAL TOOL(S)
NOTE: Ford Motor Company vehicles are produced with R-134a fluorescent dye installed in the refrigerant system from the factory. The location of
leaks can be pinpointed by the bright yellow-green glow of the fluorescent dye under a UV lamp. Since more than one leak can exist, make sure to
inspect each component, line, and fitting in the refrigerant system for a leak.
1. Check for leaks using the special tool.
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Inspect all components, lines, and fittings of the refrigerant system.
2. If a leak is found, recover the refrigerant.
3. Repair the refrigerant system leak(s).
4. Evacuate and charge the refrigerant system.
5. After the leak(s) is/are repaired, remove any traces of fluorescent dye with a general purpose oil solvent.
6. Verify the repair by running the vehicle for a short period of time and rechecking the area of the leak with the special tool.
Fluorescent Dye Injection - Using an A/C Refrigerant Center and Dye Injector
NOTE:
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Before using the R-134a fluorescent dye injector for the first time, refer to the manufacturers instructions on evacuation of any non-condensable
gasses from the hoses.
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Only connect the R-134a fluorescent dye injector to a manifold and gauge set or R-134a service center when fluorescent dye is to be injected. The
R-134a fluorescent dye injector has a one way check valve that will prevent refrigerant system recovery and evacuation.
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Refrigerant system pressure should be between 413-551 kPa (60-80 psi) at 24°C (75°F) with the engine off.
1. Install an R-134a A/C refrigerant service center or a manifold and gauge set.