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 45 of 288
TM 9-2540-207-14&P
5-1
5 HEATER MAINTENANCE
5.1 General
Iteration. For more information on Design Iterations, refer to Section 5.2.
Repairing the heater involves disassembly, repairing of parts, replacing parts, and re-assembly.
It does not involve computer programming
.
Note:
Programming of the control boards for the heater is factory set and
does not require any modification or calibration. Alarms, sensors, and fault
controls do not require any modification or calibration. Any attempt to
override these controls may permanently damage the heater or cause
personnel injury and/or property damage.
Note: The Vent Outlet Seal MUST be replaced EVERY time the heater is re-
installed into a vent ducting system(ref. 5.8.4).
Note: All O-rings, Lock-washers, Star Washers, and Gaskets are mandatory
replacement items.
Note: The heater power & fuel connections must be removed prior to the
commencement of any repair.
Some procedures may require removal of
the heater from the vehicle.
Refer to the Vehicle Technical Manual to complete the following:
-
The vehicle heater fuel filter
-
The vehicle fuel pump
-
Straightening sharp bends in the fuel supply line
-
Connect all vehicle ducting to heater
-
Remove any obstructions in combustion air inlet ducting
-
Remove any obstructions in exhaust ducting
-
Remove any obstructions in vent air ducting
-
Verify that the heater is receiving proper electrical power.
These maintenance instructions provide a step-by-step approach to access the necessary
components and perform maintenance.
Throughout these instructions there will be references
to figures that will assist in locating the various assemblies and parts.
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