Q45t V8-4130cc 4.1L DOHC MFI (VH41) (1997)
Refrigerant: All Technical Service Bulletins
A/C System - Refrigerant Leak Detection Tool
Classification:
HA99-002a
Reference:
ITB99-O12a
Date:
May 27, 1999
R-134A A/C SYSTEM REFRIGERANT DYE LEAK DETECTION
APPLIED VEHICLES:
All with R-134a A/C system
This amended version of ITB99-012 adds "Claims Information" regarding the use of a specific"Expense Code" for reimbursement. Please discard all
paper copies of ITB99-012.
SERVICE INFORMATION
A new leak detection tool is now available to assist in locating A/C refrigerant leaks. Using Kent-Moore kit # JA3926, fluorescent dye can be injected
into the A/C system and if a leak exists the dye can be externally detected using a special ultraviolet lamp. This method of leak detection can save time as
the entire A/C system can be quickly scanned to identify the location of leaks.
NOTE:
This tool is not a replacement for the Infiniti-approved electronic leak detector, and it should be used with an electronic leak detector to pin-point
refrigerant leaks.
This bulletin provides an operating procedure for the Kent-Moore leak detection kit and outlines precautionary measures associated with its use.
IMPORTANT CAUTIONS:
Kit Usage Precautions
^
For your safety, read the manufacture's operating instructions and precautions provided with the tool prior to performing any word.
^
Use extreme care when handling fluorescent dye. If it is left on surfaces (such as exterior or interior paint/clear coat, painted plastic parts, painted
bumper facias, interior plastic, etc.) for extended periods of time, it cannot be removed and a permanent stain will result. If a spill occurs, clean
immediately with the supplied cleaning agent (# J-43872 or 3M(TM) dye cleaner P/N 051135-0899 can be used as an alternate). Do not spray these
cleaning agents on hot surfaces (engine exhaust manifold, etc.)
^
Leak detection dyes for R-134a and R-12 A/C systems are different. Do not use R-134a leak detection dye in R-12 A/C systems or R-12 leak
detection dye in R-134a A/C systems or A/C system may result.
^
Do not use more than one refrigerant dye bottle (1/4 ounce/7.4cc) per A/C.
^
Always wear UV goggles when operating the UV light; never stare into the UV light beam.
Additional Information
^
The A/C system may already contain a fluorescent leak detection dye for locating refrigerant leaks. (An ultraviolet (UV) lamp is required to
illuminate the dye when inspecting for leaks.)
^
The fluorescent properties of the dye will remain for over three years unless a compressor seizure occurs, in which case new dye should be installed
to guarantee fluorescence.
^
A compressor shaft seal that exhibits dye leakage should ONLY be repaired after the leak is confirmed using an approved electronic leak detector.
^
Always remove any dye from the leak area after repairs are complete to avoid mis-diagnosis during a future service.
^
The receiver dryer currently used in the Infiniti R-134a A/C systems has an operating life of approximately 10 years. It is not necessary to replace
the receiver dryer in an R-134a system during routine service. Refer to ITB98-059 for more information.
Preliminary Checks