TM 9-2320-283-10
KEY TO LOWER CONTROL PANEL
1
HEAT CONTROL KNOB
Pull out to increase heater output temperature;
push in to decrease output temperature.
2
HEATER FAN SPEED SWITCH
Rotate right (3 positions) for LOW, MED,
and HIGH fan speeds. Turn full left to turn
off.
3
HEATER AIR CONTROL (DRIVER)
Pull out to divert heater air to the driver’s
side of the cab. Push in to close vents.
4
HEATER AIR CONTROL (PASSENGER)
Pull out to divert heater air to the passenger’s
side of the cab. Push in to close vent.
5
FRESH AIR VENT
Pull out to receive fresh air in the passenger’s side
of the cab; push in to close the fresh air vent.
6 RECIRCULATION VENT
Pull out to circulate cab air through the heater;
push in to close the vent.
7
AIR FILTER RESTRICTION INDICATOR
When air cleaner air flow is adequate, the window
on this indicator will show green. If the air flow is
restricted, the window will show red. After air filter
has been cleaned, push reset button to reset filter
indicator.
N O T E
Air cleaner maintenance is required when red
s h o w s i n t h e w i n d o w . N o t i f y O r g a n i z a t i o n a l
Maintenance.
TA 236647
2-16
