TM-9-2320-280-20-3

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 3 OF 3

JANUARY 1996

TM-9-2320-280-20-3 - Page 660 of 1168

12-42. ARCTIC HEATER CONTROL BOX ASSEMBLY REPLACEMENT

This task covers:

a. Removal

b. Installation

a. Removal

INITIAL SETUP:

Tools

General mechanic’s tool kit:

automotive (Appendix B, Item 1)

Materials/Parts

Locknut (Appendix G, Item 70)

Lockwasher (Appendix G, Items 175)

Two lockwashers (Appendix G, Item 178)

Personnel Required

One mechanic

One assistant

Manual References

TM 9-2320-280-24P

Equipment Condition

Battery ground cable disconnected (para. 4-73).

TM 9-2320-280-20-3

Change 2

12-61

1.

Remove nut (6), washer (7), capscrew (11), and washer (7) and disconnect ground lead 416A (9)

from fuel pump bracket (10).

NOTE

Perform step 2 for vehicles not equipped with troop/cargo

winterization kit. Perform step 3 for vehicles equipped with

troop/cargo winterization kit.

2.

Disconnect lead 402 (4) from fuel pump lead 402A (5).

3.

Disconnect lead 402 (26) from fuel pump jumper lead (25).

4.

Remove nut (19), lockwasher (18), and washer (17) and disconnect leads 6B (20), 6C (21), and

400 (22) from power stud (8). Discard lockwasher (18).

5.

Remove nut (12) and lockwasher (13), and disconnect leads 416 (15) and 416A (14) from shunt (16).

Discard lockwasher (13).

6.

Remove locknut (23), capscrew (1), and clamp (2) from heater control box cable (3) and tunnel (24).

Discard locknut (23).