TM 9-2320-280-20-2
4-96. CONTROL BOX ASSEMBLY REPLACEMENT (M997, M997A1, M997A2)
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Applicable Models
Manual References
M997, M997A1, M997A2
TM 9-2320-280-24P
Tools
Equipment Condition
General mechanic’s tool kit:
Battery ground cable disconnected (para. 4-73).
automotive (NSN 5180-00-177-7033)
Materials/Parts
Six lockwashers (Appendix G, Item 110)
Two nut and lockwasher assemblies
(Appendix G, Item 146)
Three screw-assembled lockwashers
(Appendix G, Item 210)
Two tiedown straps (Appendix G, Item 241)
a. Removal
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
4-176
Remove four screws (7), lockwashers (8), and cover (6) from control box (5). Discard lockwashers (8).
NOTE
Prior to removal, tag leads for installation.
Remove eight screws (4) and light harness leads (3) from terminal block (9) and mounting buss (10).
Disconnect light harness lead 791B (12) from NBC harness lead 791A (11).
NOTE
Grommet must be removed through top of control box (5).
Remove grommet (2) and light harness (1) from control box (5).
Remove four screws (14) and four heating ventilating air conditioning leads (13) from mounting buss (10)
and terminal block (9).
Remove nut and lockwasher assembly (15), clamp (16), and heating ventilating air conditioning
harness (17) from screw (18). Discard nut and lockwasher assembly (15).
Remove nut (21), lockwasher (20), and ground cable (19) from ground stud (35). Discard lockwasher (20).
Remove nut (24), lockwasher (23), washer (22), positive cable (27), and NBC cable (32) from power
stud (34). Discard lockwasher (23).
Remove two screws (25) and NBC leads (26) from mounting buss (10).
Remove nut and lockwasher assembly (29), NBC harness clamp (31), and power harness clamp (28)
from stud (33). Discard nut and lockwasher assembly (29).
