TM-9-2540-207-14-P
HEATER, VEHICULAR COMPARTMENT, MODEL: A20
TECHNICAL MANUAL; OPERATOR, FIELD, AND SUSTAINMENT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2007
TM-9-2540-207-14-P - Page 190 of 288
TM 9-2540-207-14&P
6-26
6.5.34 F1 - IGNITION OVERTIME (Design Iteration 3 Only)
THE HEATER WAS UNABLE TO ESTABLISH IGNITION IN THE 3½ MINUTE TIME LIMIT
CHECK/POSSIBLE CAUSE
REF
.R
EPAIR
1
CHECK THAT WIRE IS INSTALLED
ONTO IGNITOR AND THAT
IGNITOR HATCH IS INSTALLED
CORRECTLY
4.1.1
INSTALL WIRE ON IGNITOR POST
INSTALL IGNITOR HATCH
RESTART HEATER
2
CHECK THAT IGNITOR HOLDER IS
CLEAN
4.1.1
CLEAN IGNITOR HOLDER
RESTART HEATER
3
CHECK THAT IGNITOR IS WET
WITH FUEL
IF IGNITOR IS DRY THEN PROCEED TO STEPS
3-9
IF IGNITOR IS WET THEN PROCEED TO STEPS
10-16
4
CHECK THAT VEHICLE OR
SOURCE FUEL PUMP IS
OPERATING
VEHICLE TM
RECONNECT SOURCE FUEL PUMP
RESTART HEATER
5
CHECK IF VEHICLE FUEL FILTER
IS PLUGGED
VEHICLE TM
REPLACE VEHICLE FUEL FILTER
RESTART HEATER
6
REMOVE TOP COVER AND CHECK
FOR AIR BUBBLES IN FUEL LINE.
CHECK IF FUEL LINE TO HEATER
IS PINCHED/OBSTRUCTED
BLEED AIR FROM FUEL LINES, STRAIGHTEN
FUEL LINES AND REMOVE OBSTRUCTIONS
RESTART HEATER
7
CHECK FOR AMPLE FUEL SUPPLY
TABLE 2-1
FILL FUEL TANK WITH FUEL & ENSURE A
MINIMUM OF 3PSIG FUEL PRESSURE IS
SUPPLIED TO THE HEATER INLET
RESTART HEATER
8
DEFECTIVE FUEL INJECTOR
5.5.5
REPLACE FUEL INJECTOR
RESTART HEATER
9
CHECK FOR FUEL FLOW FROM
THE SOURCE PUMP TO THE FUEL
INJECTOR
VEHICLE TM
TURN VEHICLE FUEL PUMPS ON AND REMOVE
OBSTRUCTIONS AND BENDS IN FUEL LINES
RESTART HEATER
10
HEATER IS FLOODED (AFTER 3
“NO START” CONDITIONS)
3.5
IF HEATER IS FLOODED, PURGE 3 TIMES
WITHOUT STARTING (SEE 3.5)
WAIT FOR 30 MIN.
ATTEMPT THREE MORE STARTS.
11
CHECK FOR FREE ROTATION AND
CARBON BUILD-UP ON BURNER
FUEL SHAFT
5.3.7
CLEAN FUEL SHAFT,
CHECK FOR SECURE PUSHNUT AND FREE
ROTATION OF THE SHAFT.
IF PUSHNUT IS LOOSE OR SHAFT DRAGS
REPLACE THE BURNER
RESTART HEATER
12
CHECK FOR OBSTRUCTIONS OF
BURNER SYSTEM
5.3
CLEAN COMBUSTION ASSEMBLY
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