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 145 of 288
TM 9-2540-207-14&P
5-101
Wiring Harnesses (continued)
5.9.8.1.1 Removal
1.
Remove Top Cover (ref. 5.4.1).
2.
Remove Top Shell (ref. 5.4.2).
3.
Remove Bottom Shell (ref. 5.4.3).
4.
Remove Vent Fan Assembly (ref. 5.6.1).
5.
Remove Combustor Assembly (ref. 5.7.1).
6.
Using a 7/16" open ended wrench, remove the Exhaust Sensor from the Exhaust Port.
7.
Detach Wiring Harness connector (J5) from the Vent Sensor.
Note:
The Vent Sensor connector has a self locking tab that needs to be
lifted to allow the two halves of the connector to come apart.
8.
Using pliers, release the 1" metal spring clamp at the Secondary Air Duct from the Heat
Exchanger end.
Slide the spring clamp over the hose and release onto the Top Housing
end so that the Secondary Air Duct and two spring clamps are attached to Top Housing.
Be careful that the spring clamp does NOT damage the Secondary Air Duct.
!CAUTION!
DO NOT set the Top Housing on the Secondary Air Duct Hose.
Place the Top Housing on it’s side with the fuel inlet fitting facing upwards.
9.
Using a #2 cross-tip screwdriver, remove the four (4) screws that hold the Top Housing
to the Heat Exchanger.
Lift the Top Housing away from the Heat Exchanger.
10.
Remove Wiring Harness connectors from the Fuel Injector (J5), (rotate the Injector
upwards to release the connector), the Fuel Pump (J4), and the Burner Fan Driver Board
(J3).
11.
Using a #1 cross-tip screwdriver, unscrew the two (2) screws that hold the MS Power
connector (J2) to the Top Housing.
Using a screwdriver, remove the bolt holding down
the Inductor (L1) clamp to the Burner Fan Plate.
Using a screwdriver, loosen the bolt
found on the side of the Main Capacitor (C2) clamp.
Free the Capacitor and push the
MS Power connector to the inside of the Top Housing.
12.
Remove Logic Harness connectors from the Diagnostic Display (J2) and the Fuel
Pressure Sensor (J4).
13.
With the Top Housing on its side, use a #2 cross-tip screwdriver to remove the screws
holding the Power and Logic P-clips attached to the underside of the Top Housing.
Back to Top
