Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)
2.
Connect the injector tool to the A/C LOW PRESSURE side service fitting.
3.
Start the vehicle and turn on the A/C system (A/C compressor operating).
4.
Inject the dye into the A/C system.
5.
Disconnect the injector tool from the service fitting.
CAUTION:
Do not allow dye to drip or spray when disconnecting the injector tool.
6.
Install the refrigerant dye identification label next to the (OE) A/C system charge label (indicating the vehicle is now equipped with
refrigerant leak detection dye).
7.
Use a permanent marker to write the dye installation date on the dye identification label.
NOTE:
If the A/C system refrigerant loop is "opened" due to a repair, the refrigerant dye can be poured directly into the open part of the A/C
system.
3.
Operate the A/C system for 20 minutes to allow the dye to mix with the refrigerant oil.
NOTE:
Depending on the leak size, operating conditions and location of the leak, it may take from minutes to days for the dye to leak to a point that it is
visible.
4.
With the engine off, check all components, fittings and lines for leaks using the UV lamp and safety goggles in a shaded area.
NOTES:
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The dye appears as a bright green/yellow fluorescent area at the point of leakage.
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Fluorescence detected coming from the A/C evaporator drain tube typically indicates a leak in the evaporator core, tubes, fittings or TXV (Thermal
Expansion Valve).
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If it is difficult to shine the UV lamp directly on the suspected area, try using an adjustable mirror to reflect the light or wipe the area with a clean
cloth and check for dye fluorescence on the cloth.
5.
Repair confirmed refrigerant leaks.
6.
Remove all residual dye using the recommended dye cleaner to prevent future mis-diagnosis.
7.
Perform an A/C system performance test and confirm the leak repairs are successful using an approved electronic leak detector. Refer to the HA
section of the applicable service manual for the A/C system performance procedure.
NOTE:
Moving the electronic leak detector probe slower and closer to the suspected leak area will improve the chances of finding a leak.
PARTS INFORMATION
The Kent-Moore A/C system refrigerant dye leak detection kit (J-43926*) is an essential tool and will automatically be sent to all dealers.
NOTE:
This kit does not contain the leak detection dye for R-12 A/C systems. To obtain the R-12 A/C system leak detection dye, order # J-39475 separately.
* Kit includes:
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Ultra-violet lamp with shield/fluorescent enhancing safety goggles # J-42220
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Refrigerant dye injector # J-41459
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R-134a refrigerant dye # J-41447 (qty. 24)
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Refrigerant dye cleaner # J-43872
NOTE:
Refrigerant dye identification labels (qty. 30) are included with the refrigerant dye.