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 702 of 1258
1.
Remove two capscrews (17), lockwashers (18), washers (19), harness bracket (20), clamps (21),
suction line (3), and discharge line (4) from body (5). Remove clamps (21) from suction
line (3) and discharge line (4). Discard lockwashers (18).
2.
Disconnect suction line (3) and discharge line (4) from fittings (1). Remove and discard two O-rings (2).
3.
Remove three tiedown straps (6) and slide insulation (7) on suction line (3) and discharge line (4)
away from suction hose (8) and discharge hose (9). Disconnect and remove suction line (3) and
discharge line (4) from suction hose (8) and discharge hose (9). Discard tiedown straps (6).
4.
Remove nut (15), lockwasher (14), washer (11), capscrew (10), clamp (16), suction hose (8), and
discharge hose (9) from underside of body (13). Remove seven tiedown straps (12) securing suction
hose (8) and discharge hose (9) together. Remove clamp (16) from suction hose (8) and
discharge hose (9). Discard lockwasher (14) and tiedown straps (12).
5.
Remove and discard insulation (7) from suction hose (8) and discharge hose (9).
14-18.
AIR-CONDITIONING PRESSURE LINES REPLACEMENT
This task covers:
a.
Removal
b.
Installation
Applicable Modelss
________________
M997, M997A1, M997A2
To o l s
____
General mechanic's tool kit:
automotive (Appendix G, Item 1)
M a t e r i a l s / P a rt s
____________
Four O-rings (Appendix E, Item 100)
Ten tiedown straps (Appendix E, Items 210)
Three lockwashers (Appendix E, Item 72)
Insulation (Appendix B, Item 26)
Lubricating oil (Appendix B, Item 35)
(R-12 only)
Lubricating oil (Appendix B, Item 35.1)
(FR-12 only)
Personnel Require d
________________
One mechanic
One assistant
Manual Refere n c e s
_______________
TM 9-2320-280-20
TM 9-2320-280-24P
Equipment Condition
________________
• Air-conditioning system discharged (para. 14-17).
• Companion seat removed (TM 9-2320-280-20).
• Air horn hose removed (TM 9-2320-280-20).
General Safety Instructions
_____________________
Air conditioner system must be discharged, prior
to replacing components.
Maintenance Level
_______________
Direct support
INITIAL SETUP:
________
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.
CAUTION
______
Cover or plug all open hoses and connections immediately after disconnection
to prevent contamination. Remove all plugs prior to connection.
a. Removal
NO T E
• All air-conditioning pressure lines are replaced basically the same. This
procedure covers the A/C compartment to compressor lines.
• Suction line has a larger diameter than the discharge line, fittings will
not interconnect.
TM 9-2320-280-34
1 4 - 1 0 2
Change 1
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