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 565 of 951

4-127. HEAT/AIR-CONDITIONING CONTROL PANEL RELAY AND SWITCH

MAINTENANCE (M997, M997A1, M997A2)

This task covers:

a. Heat A/C Panel Removal

h.

Fuel Hi-Low Switch Installation

b. Heat A/C Panel Installation

i.

Fan Hi-Low Switch Removal

c. Heater Run-Start Switch Removal

j.

Fan Hi-Low Switch Installation

d. Heater Run-Start Switch Installation

k.

A/C On-Off Switch Removal

e. Heat On Light Removal

l.

A/C On-Off Switch Installation

f.

Heat On Light Installation

m. Rollover Switch Removal

g. Fuel Hi-Low Switch Removal

n.

Rollover Switch Installation

Manual References

TM 9-2320-280-24P

Equipment Condition

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

a. Heat A/C Control Panel Removal

b. Heat A/C Control Panel Installation

Remove four screws (1), two bolts (6), lockwashers (5) and panel (2) from harness bracket (4) and control

box (3). Pull panel (2) away from control box (3). Discard lockwashers (5).

Install panel (2) on harness bracket (4) and control box (3) with two lockwashers (5), bolts (6), and four

screws (1).

TM 9-2320-280-20-2

Change 3

4-319

NOTE

Check for loose or disconnected wires before installing panel.

INITIAL SETUP:

Applicable Models

M997, M997A1, M997A2

Tools

General mechanic’s tool kit:

automotive (Appendix B, Item 1)

Materials/Parts

Nine lockwashers (Appendix G, Item 169)

Two lockwashers (Appendix G, Item 138)

1

2

3

4

5

6