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 440 of 951

4-100. NBC CONTROL BOX AND WIRING HARNESS REPLACEMENT (M997, M997A1, M997A2)

This task covers:

a. Removal

b. Installation

INITIAL SETUP:

Applicable Models

M997, M997A1, M997A2

Tools

General mechanic’s tool kit:

automotive (Appendix B, Item 1)

Materials/Parts

Locknut (Appendix G, Item 77)

Four lockwashers (Appendix G, Item 136)

Five lockwashers (Appendix G, Item 135)

Three assembled locknuts

(Appendix G, Item 130)

Five plain-assembled nuts

(Appendix G, Item 201)

Nine tiedown straps (Appendix G, Item 309)

Manual References

TM 9-2320-280-10

TM 9-2320-280-24P

Equipment Condition

• Control panel removed (para. 4-124).

• Front cover panel removed (para. 11-187).

TM 9-2320-280-20-2

4-202

Change 3

CAUTION

Use care when removing harness. Failure to do so will cause

damage to harness.

1.

Remove four screws (8) lockwashers (7) and cover (6) from control box (1). Discard lockwashers (7).

2.

Remove assembled locknut (11), clamp (12), and NBC harness (13) from control box stud (16).

Discard assembled locknut (11).

NOTE

Prior to removal, tag leads for installation.

3.

Remove nut (5), washer (3), and lead 782 (2) from power stud (20).

4.

Disconnect NBC harness lead 791A (17) from light harness lead 791B (18).

5.

Remove two screws (9) and NBC harness leads (10) from mounting buss (19).

6.

Remove grommet (21) by pushing down through top of control box (1).

7.

Remove grommet (14) and NBC harness (13) from body (15).

a. Removal