AIR CONDITIONER LEAK TEST
THIS WORK PACKAGE COVERS
Tools and Special Tools
Tool kit, general mechanics (Item 36, WP 0236 00)
Leak detector, refrigerant (Item 22, WP 0236 00)
Liquid refrigerant, when exposed to air, quickly evaporates and will freeze skin or eye tissue. Use care
to prevent refrigerant from touching your skin or eyes. Serious injury or blindness may result if you
come in contact with liquid refrigerant.
Refrigerant R-134a air conditioning systems should not be pressure tested or leak tested with com-
pressed air. Combustible mixtures of air and R-134a may form, resulting in fire or explosion, which
could cause personal injury.
Refrigerant is odorless. As a result, all of it may leak away and not be noticed until system stops cool-
ing. All vehicle refrigerant systems lose some refrigerant depending on the condition of system. Higher
loss rates signal a need to locate and repair leaks.
Leaks are most often found at the compressor hose connections and at various fittings and joints in sys-
tem. If unapproved replacement hoses are installed, refrigerant can be lost through hose permeation.
Visually inspect refrigerant system for air conditioning lubricant leakage and corrosion and damage to lines, hoses, and
Visually inspect lowest points of fittings, hoses, and lines for indication of lubricant leakage.
Use a leak detector in accordance with the manufacturers instruction manual and check for refrigerant leakage at hose
connections, fittings, and areas where leakage might occur. If leaks are indicated, notify Direct Support Maintenance of leak in
air conditioning system.
END OF WORK PACKAGE