TM 10-3930-675-20-20188 00-1AIR CONDITIONER LEAK TEST0188 00THIS WORK PACKAGE COVERSInspection, TestINITIAL SETUPTools and Special ToolsTool kit, general mechanic’s (Item 31, WP 0204 00)Leak detector, refrigerant (Item 16, WP 0204 00)INSPECTIONWARNING•Liquid refrigerant, when exposed to air, quickly evaporates and will freeze skin or eye tissue. Use careto prevent refrigerant from touching your skin or eyes. Serious injury or blindness may result if youcome 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, whichcould 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. Higherloss 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, andother components.2.Visually inspect lowest points of fittings, hoses, and lines for indication of lubricant leakage.TESTUse 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 airconditioning system.END OF WORK PACKAGE
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