TM-9-2320-272-24-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4
JUNE 1998
TM-9-2320-272-24-2 - Page 178 of 991
TM 9-2320-272-24-2
3-294. DEFROST AND HEAT CONTROLS REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
INITIAL SETUP:
APPLICABLE MODELS
REFERENCES (TM)
All
TM 9-2320-272-10
TOOLS
TM 9-2320-272-24P
General mechanic’s tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
MATERIALS/PARTS
Parking brake set (TM 9-2320-272-10).
Two cotter pins (Appendix D, Item 53)
Two spring nuts (Appendix D, Item 672)
NOTE
Tag all cables for installation.
a. Removal
1.
Remove screw (15), clamp (3), defrost cable (1), and retaining clip (4) from diverter bracket (6).
2.
Remove cotter pin (16), defrost cable (1), and spring nut (2) from control rod (5). Discard cotter
pin (16) and spring nut (2).
3.
Remove screw (14), clamp (10), heat control cable (13), and retaining clip (8) from diverter
bracket (7).
4.
Remove cotter pin (12), heat control cable (13), and spring nut (11) from control rod (9). Discard
cotter pin (12) and spring nut (11).
5.
Remove eight screws (23) and pull instrument cluster (22) away from instrument panel (17).
6.
Remove two nuts (19), washers (18), and defrost cable (1) from instrument cluster (22).
7.
Remove heat control cable handle (20), heat control cable (13), defrost cable (1), and defrost control
handle (21) from instrument cluster (22).
b. Installation
1.
Install heat control cable handle (20), heat control cable (13), defrost control handle (21), and defrost
cable (1) on instrument cluster (22) with two washers (18) and nuts (19).
2.
Route cables (1) and (13) to diverter brackets (6) and (7).
3.
Install instrument cluster (22) on instrument panel (17) with eight screws (23).
4.
Push heat control handle (20) and defrost handle (21) in all the way.
5.
Install heat control cable (13) on control rod (9) with new spring nut (11) and new cotter pin (12).
6.
Install heat control cable (13) on diverter bracket (7) with retaining clip (8), clamp (10), and
screw (14).
7.
Install defrost control cable (1) on control rod (5) with new spring nut (2) and new cotter pin (16).
8.
Install defrost control cable (1) on diverter bracket (6) with retaining clip (4), clamp (3), and
screw (15).
3-786
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