25-29.   A/C EVAPORATOR (REAR) SUPPLY AND RETURN LINE REPLACEMENT This task covers: a.    Removal b.   Installation a.   Removal 1. Loosen nut (18), disconnect hose assembly (17) from rear liquid tube (10), and remove O-ring (19). Discard O-ring (19). 2. Loosen two nuts (4) and remove rear liquid tube (10) and two O-rings (3) from evaporator connector (2) and bulkhead fitting (5). Discard O-rings (3). 3. Loosen nut (12), disconnect hose assembly (13) from rear discharge tube (9), and remove O-ring (11). Discard O-ring (11). 4. Loosen nut (8) and remove rear discharge tube (9) and O-ring (7) from bulkhead fitting (6). Discard O-ring (7). 5. Loosen nut (15), disconnect hose (14) from rear suction tube (20), and remove O-ring (16). Discard O-ring (16). 6. Loosen nut (21) and remove rear suction tube (20) and O-ring (22) from evaporator connector (1). Discard O-ring (22). INITIAL SETUP: Applicable Models M1114 Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Automotive maintenance and repair: field maintenance, basic (Appendix B, Item 6) Materials/Parts Three O-rings (Appendix G, Item 265) Four O-rings (Appendix G, Item 266.1) Refrigerant oil (Appendix C, Item 48) Manual References TM 9-2320-387-24P Equipment Condition •  A/C system discharged (para. 25-15). •  Left passenger seat removed (para. 10-45). •  A/C coolant line rear B-pillar cover and left rear HVAC lines covers removed (para. 25-32). Maintenance Level Direct support TM 9-2320-387-24-2 25-76 Change 1 b.   Installation 1. Lubricate O-rings (16) and (22) with refrigerant oil. 2. Install O-ring (22) and rear suction tube (20) on evaporator connector (1). Tighten nut (21) to 24 lb-ft (33 N•m). 3. Install O-ring (16) and hose (14) on rear suction tube (20). Tighten nut (15) to 24 lb-ft (33 N•m). 4. Lubricate O-rings (7) and (11) with refrigerant oil. 5. Install O-ring (7) and rear discharge tube (9) on bulkhead fitting (6). Tighten nut (8) to 18 lb-ft (24 N•m). 6. Install O-ring (11) and hose assembly (13) on rear discharge tube (9). Tighten nut (12) to 18 lb-ft (24 N•m). 7. Lubricate two O-rings (3) and O-ring (19) with refrigerant oil. 8. Install two O-rings (3) and rear liquid tube (10) on evaporator connector (2) and bulkhead fitting (5). Tighten nuts (4) to 12 lb-ft (16 N•m). 9. Install O-ring (19) and hose assembly (17) on rear liquid tube (10). Tighten nut (18) to 12 lb-ft (16 N•m).