TM 9-2320-280-34
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Applicable Models
Equipment Condition
M997, M997A1
Air-conditioning system discharged
Tools
(compressor replacement only).
General mechanic's tool kit:
Right splash shield removed
automotive (Appendix G, Item 1)
(TM 9-2320-280-20).
Air filter to air horn hose removed
Materials/Parts
(TM 9-2320-280-20).
Lockwasher (Appendix E, Item 100)
Disconnect battery ground cable
Four lockwashers (Appendix E, Item 104)
(TM 9-2320-280-20).
Two O-rings (Appendix E, Item 144)
Lubricating oil (Appendix B, Item 35)
General Safety Instructions
Air-conditioning system must be discharged,
Manual References
prior to replacing components.
TM 9-2320-280-20
TM 9-2320-280-24P
Maintenance Level
Direct support
NOTE
The following procedure applies to vehicles with R-12 refrigerant only.
Refer to para. 14-27.8 for vehicles with R-134a refrigerant.
a. Removal
WARNING
Air conditioning 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
Ensure valve holes in compressor and service valves are
immediately capped after service valve removal. Failure to do so
may cause damage to compressor.
NOTE
Perform steps 1 and 2 if compressor is being removed to service
other than the A/C system components.
Tag service valves "front-seated" for installation.
1.
Turn both service valves (3) fully clockwise until front-seated.
2.
Loosen two nuts (2) on service valves (3) slowly to allow refrigerant to escape from compressor (20).
3.
Remove two service valves (3) and O-rings (1) from compressor (20) slowly. Discard O-rings (1).
4.
Remove screw (10) and clamp (11) from adjusting bracket (6).
NOTE
Prior to removal, tag leads for installation.
5.
Disconnect two compressor leads (23) from two harness leads (24).
6.
Remove nut (9), lockwasher (8), and washer (7) from adjusting bracket (6) and timing chain cover
bolt. Discard lockwasher (8).
7.
Remove two nuts (14), lockwashers (13), washers (12), capscrews (4), washers (5), adjusting
bracket (6), and clamp (21) and washers (7), from compressor (20). Discard lockwashers (13).
8.
Remove drive belt (16) from pulley (15).
9.
Remove adjusting bracket (6) and washer (7) from compressor (20) and timing chain cover bolt.
Change 2
