TM 5-4310-368-14
Figure 1-8. Valves and Heater Controls
CHOKE - regulates the fuel-air mixture in the carburetor for starting the engine. It is mechanically controlled by a
push-pull handle on the panel.
DEHYDRATOR BLEED VALVE - releases the pressure in the air dryer cylinders to allow the cylinders to be opened
to change dryer cartridges.
SERVICE SHUTOFF VALVE - controls flow of air from the air receiver to the service hose connection.
RECEIVER DRAIN VALVE - releases air stored in the air receiver.
SERVICE HOSE BLEED VALVE -- releases air pressure in air service hose to allow the hose to be safely
disconnected.
HEATER INDICATOR LIGHT - indicates that the heater is running.
HEATER FIRE RATE SWITCH - controls the heater rate of heating.
HEATER CIRCUIT BREAKER - will trip in case of heater circuit overload. Reset by pressing after about 5 minutes.
HEATER CONTROL SWITCH - is a three-position switch which is spring-loaded to return to RUN position from
START position.
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