TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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4-22 TB 9-2510-251-13 4-14 Air Conditioning System Servicing This task covers: a. Discharge Air Conditioning System b. Purge Air Conditioning System c. Charge Air Conditioning System INITIAL SETUP Equipment Conditions: Materials/Parts: Engine Shut Down (TM 9-2320-280-10) R134A Refrigerant (Item 8, Appendix D) Hood Raised and Supported (TM 9-2320-280-10) Oil, Refrigerant (Item 6, Appendix D) Tools and Test Equipment: Personnel Required: General Mechanic’s Tool Kit (Item 1, Appendix B) (1) MOS 52C - Utilities Equipment Repairer Refrigeration Tool Kit (Item 4, Appendix B) General When the air conditioning system must undergo initial service or maintenance that requires opening the system, the system must be discharged prior to maintenance and purged and charged after maintenance. a. Discharge Air Conditioning System WARNING Since the beginning of 1992, the EPA has required that any refrigerant removed from an AC system be recovered and recycled before reuse. The refrigerant must be contained in an externally sealed container when undergoing recovery/recycle procedures to ensure environmentally safe processing. Failure to comply could result in injury to personnel and/or damage to equipment. CAUTION • It is important to run the vacuum pump long enough to insure the removal of any moisture that may be in the system. Failure to comply could result in damage to equipment. • To prevent excess loss of oil, discharge system slowly over a period of two hours. Failure to comply could result in damage to equipment. NOTE When installing gauge, note that RED is high side and BLUE is low side.