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

  TM-9-2540-207-14-P - Page 189 of 288

TM 9-2540-207-14&P
6-25
6.5.33 F1 - IGNITION OVERTIME (Design Iteration 1 & 2 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 & RESTART
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 CARBON BUILD-UP
ON BURNER FUEL SHAFT
5.3.7
CLEAN FUEL SHAFT
12
CHECK FOR OBSTRUCTIONS OF
BURNER SYSTEM
5.3
CLEAN COMBUSTION ASSEMBLY
13
CHECK CONDITION OF FLAME
TUBE AND BURNER CHAMBER
5.3.2
5.3.5
REPLACE FLAME TUBE AND BURNER
CHAMBER
RESTART HEATER
14
WICK IS DEGRADED
5.3.6
REPLACE BURNER CARTRIDGE
15
DEFECTIVE WIRING HARNESS
5.5.6
REPLACE WIRING HARNESS
RESTART HEATER


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