TM 10-3930-675-20-2
0188 00-1
AIR CONDITIONER LEAK TEST
0188 00
THIS WORK PACKAGE COVERS
Inspection, Test
INITIAL SETUP
Tools and Special Tools
Tool kit, general mechanic’s (Item 31, WP 0204 00)
Leak detector, refrigerant (Item 16, WP 0204 00)
INSPECTION
WARNING
•
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.
NOTE
•
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 thru hose permeation.
1.
Visually inspect refrigerant system for air conditioning lubricant leakage and corrosion and damage to lines, hoses, and
other components.
2.
Visually inspect lowest points of fittings, hoses, and lines for indication of lubricant leakage.
TEST
Use a leak detector in accordance with manufacturer’s instruction manual and check for refrigerant leakage at hose con-
nections, 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
