TM-9-2320-280-20-2
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 2 OF 3
JANUARY 1996
TM-9-2320-280-20-2 - Page 530 of 951
4-121. CONDENSER FAN/PRESSURE SWITCH WIRING HARNESS REPLACEMENT
(M997, M997A1, M997A2)
This task covers:
a. Removal
b. Installation
a. Removal
1.
Disconnect leads 436A (12) and 436B (13) from low pressure switch leads (11).
2.
Remove nut (5), washer (4), capscrew (19), lockwasher (18), washer (17), and clamp (3) from
harness (2) and dryer panel (20). Discard lockwasher (18).
3.
Disconnect leads 436A (7), 436C (8), 799J (9), and 437A (10) from control box leads (6).
4.
Disconnect leads 436B (15) and 436C (16) from high pressure switch leads (14).
5.
Disconnect leads 437C (25), 799L (26), 437B (23), and 799K (24) from condenser fan leads (27)
and (1).
6.
Remove grommet (21) from condenser panel (22) and remove harness (2).
b. Installation
1.
Install leads 799L (26), 437C (25), 437B (23), and 799K (24) through condenser panel (22) and
connect to condenser fan leads (1) and (27).
2.
Install grommet (21) on harness (2) and condenser panel (22).
3.
Connect leads 436A (7), 436C (8), 799J (9), and 437A (10) to control box leads (6).
4.
Connect leads 436B (15) and 436C (16) to high pressure switch leads (14).
5.
Connect leads 436A (12) and 436B (13) to low pressure switch leads (11).
6.
Install clamp (3) on harness (2) and dryer panel (20) with washer (17), lockwasher (18),
capscrew (19), washer (4), and nut (5).
Manual References
TM 9-2320-280-24P
Equipment Condition
• Battery ground cable disconnected (para. 4-73).
• Air intake compartment panels removed
(para. 11-184).
TM 9-2320-280-20-2
4-284
Change 3
NOTE
Prior to removal, tag leads for installation.
INITIAL SETUP:
Applicable Models
M997, M997A1, M997A2
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Materials/Parts
Lockwasher (Appendix G, Item 182)
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