a. Removal
TM 9-2320-280-20-3
12-42. ARCTIC HEATER CONTROL BOX ASSEMBLY REPLACEMENT
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Tools
Personnel Required
General mechanic’s tool kit
One mechanic
automotive (Appendix B, Item 1)
One assistant
Materials/Parts
Manual References
Nut and lockwasher assembly
TM 9-2320-280-24P
(Appendix G, Item 146)
Equipment Condition
Lockwasher (Appendix G, Items 115)
Two lockwashers (Appendix G, Item 127)
Battery ground cable disconnected (para. 4-73).
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 nut and lockwasher assembly (23), capscrew (1), and clamp (2) from heater control box
cable (3) and tunnel (24). Discard nut and lockwasher assembly (23).
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