TM-9-2320-280-34
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1996
TM-9-2320-280-34 - Page 704 of 1258
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
1 4 - 1 0 4
Change 1
FR-12 CONFIGURATION
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