TM 9-2320-280-20-2
4-126. HEAT/VENT CONTROL PANEL RELAY AND SWITCH MAINTENANCE
(M996, M996A1)
This task covers:
a.
b.
c.
d.
e.
f.
g.
h.
Heater Run-Start Switch Removal
Heater Run-Start Switch Installation
24-Volt Relay Removal
24-Volt Relay Installation
Relay Socket Removal
Relay Socket Installation
Heat On Light Removal
Heat On Light Installation
i.
j.
k.
l.
m.
n.
o.
p.
Spot Vent Switch Removal
Spot Vent Switch Installation
Fuel Hi-Low Switch Removal
Fuel Hi-Low Switch Installation
Fan Hi-Low Switch Removal
Fan Hi-Low Switch Installation
Rollover Switch Removal
Rollover Switch Installation
INITIAL SETUP:
Applicable Models
Manual References
M996, M996A1
TM 9-2320-280-24P
Tools
Equipment Condition
General mechanic’s tool kit:
Battery ground cable disconnected (para. 4-73).
automotive (Appendix B, Item 1)
Heater compartment panel removed
(para. 11-204).
Materials/Parts
Heat/vent control panel removed (para. 4-125).
Twenty-one lockwashers
(Appendix G, Item 110)
Two nut and lockwasher assemblies
(Appendix G, Item 146)
NOTE
Prior to removal, tag leads for installation.
a. Heater Run-Start Switch Removal
1. Remove nut (8), switch (4), washer (6), and nut (5) from panel (7).
2. Remove six screws (1), lockwashers (3), and seven terminals (2) from switch (4). Discard
lockwashers (3).
b. Heater Run-Start Switch Installation
1. Install seven terminals (2) on switch (4) with six lockwashers (3) and screws (1).
2. Install nut (5), washer (6), and switch (4) on panel (7) with nut (8).
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