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).
