2-41. TROOP/CARGO WINTERIZATION HEATER OPERATING INSTRUCTIONS
Troop/cargo winterization heater is for use during extremely cold temperatures from 0°F (-18°C) to -50°F
Do not operate troop/cargo heater in ambient temperatures above 0°F (-18°C), or
with fan switch in HI" position, when temperature is above -25°F (-32°C). Damage
to equipment will result.
Heater may be operated with engine running or engine off.
b. Starting Heater.
Set heater fan switch (4) to "LO" position.
Move heater control switch (2) to "START position and hold for approximately two minutes or until
heater starts and heater indicator light (1) comes on.
When heater starts, move heater control switch (2) to RUN" position.
The heater indicator light (1) will remain illuminated.
Set heater fan switch (4) to desired position ("HI" or LO").
To defrost the interior of the troop/cargo enclosure, the diverter assembly door
should be shut or in the closed position.
Adjust diverter assembly (3) to regulate amount of outside and inside air to be circulated through
the heater assembly and into the troop/cargo area.
c. If Heater Fails to Start:
If the start switch is moved from the START" to RUN" position too quickly, the
heater flame will be extinguished and the heater will need restarting.
Move heater control switch (2) to OFF" position for 10 seconds, and then back to START" for 60
seconds. Repeat procedure if heater doesn't start.
Press heater indicator light (1) to test electrical circuit.
If heater indicator light (1) works and heater still fails to start in approximately three minutes,
service is required.
d. Shutting Heater Off.
Move heater control switch (2) to OFF."
The heater indicator light will remain on and the fan will continue to run until the
heater has purged itself of fuel.