TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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14-18. AIR-CONDITIONING PRESSURE LINES REPLACEMENT (Cont'd) 6. Disconnect suction hose (1) and discharge hose (4) from compressor service valve (3) and service valve (5) and remove suction hose (1) and discharge hose (4). Remove and discard two O-rings (2). b. Installation NOTE FR-12 systems require different lubricating oil. 1. Using the old pressure lines as a positioning template, install insulation (12) to suction hose (14) and discharge hose (15). 2. Install suction hose (14) and discharge hose (15) through grommet (13) and into crew compartment ensuring that insulation (12) is positioned to prevent chafing of hoses against grommet (13). 3. Lubricate two O-rings (2) with refrigerant oil and install O-rings (2) on suction hose (1) and discharge hose (4) and connect to compresson service valve (3) and service valve (5). 4. Lubricate two O-rings (7) with refrigerant oil and install O-rings (7) on fittings (6). Install and tighten suction line (8) on fitting (6) to 33 lb-ft (45 N•m). Install and tighten discharge line (9) on fitting (6) to 20 lb-ft (27 N•m). 5. Connect discharge line (9) to discharge hose (15) and tighten to 30 lb-ft (41 N•m). Connect suction line (8) to suction hose (14) and tighten to 45 lb-ft (61 N•m). 6. Slide insulation (12) on discharge line (9) towards discharge hose (15) and install three tiedown straps (11). 7. Install clamp (22) on suction hose (14) and discharge hose (15) on underside of body (19) with capscrew (16), washer (17), lockwasher (20), and nut (21). Secure suction hose (14) and discharge hose (15) together with seven tiedown straps (18). 8. Install two clamps (24) harness clamp (23) on suction line (8) and discharge line (9) to body (10) with washers (27), lockwashers (26), and capscrews (25). TM 9-2320-280-34 14-104 Change 1 FR-12 CONFIGURATION