AIR BOX HEATER.

TM 9-2350-238-20-1

BB. AIR BOX HEATER.

Step 1.

Set MASTER switch ON. Hold PUMP AND HEATER IGNITER switch ON

while cycling PRIME ENGINE FUEL FILTERS/HEATER FUEL CYCLE ON

AND OFF switch ON and OFF for 10 seconds. If fuel pump bypass sole-

noid valve does not become energized, go to step 2. If air box heater fuel

supply solenoid valve does not become energized, go to step 4. If air box

heater fuel supply solenoid becomes energized, go to step 7. Set MASTER

switch OFF. Release PUMP AND HEATER IGNIITER switch. Release

PRIME ENGINE FUEL FILTERS/HEATER FUEL CYCLE ON AND OFF

switch.

2-297