TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
Page 722 of 1258
14-25. AIR-CONDITIONING SERVICE VALVE REPLACEMENT INITIAL SETUP: Applicable Models _______________ M997, M997A1, M997A2 Tools ____ General mechanic's tool kit: automotive (Appendix G, Item 1) Materials/Parts _____________ Two O-rings (Appendix E, Item 105) Lubricating oil (Appendix B, Item 35) (R-12 only) Lubricating oil (Appendix B, Item 35.1) (FR-12 only) Manual References ________________ TM 9-2320-280-20 TM 9-2320-280-24P Equipment Condition _________________ • Air-conditioning system discharged (para. 14-17). • Air horn to air cleaner hose removed (TM 9-2320-280-20). General Safety Instructions ______________________ Air conditioner system must be discharged, prior to replacing components. Maintenance Level _______________ Direct support FOLLOW-ON TASKS: • Evacuate and charge air-conditioning system (para. 14-17). • Install air horn to air cleaner hose (TM 9-2320-280-20). 1. Disconnect suction line (1) from service valve (2). 2. Remove suction service valve (2) and two O-rings (3) from compressor (4). Discard O-rings (3). b. Installation 1. Lubricate two O-rings (3) with refrigerant oil and install on suction service valve (2). 2. Install suction service valve (2) on compressor (4). 3. Connect suction line (1) to suction service valve (2). ________ WARNING ________ Air conditioner system must be discharged, prior to replacing components in vapor system. Failure to do this may result in injury to personnel or damage to equipment. NO T E • Suction (low pressure) and discharge (high pressure) service valves are replaced basically the same. This procedure covers the suction service valve • FR-12 service valves are replaced the same. a. Removal TM 9-2320-280-34 14-122 Change 1 This task covers: a. Removal b. Installation