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 161 of 288

TM 9-2540-207-14&P

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Burner Fan Driver Board Removal (continued)

2.

Disconnect the Burner Fan Motor J3 Power connector.

3.

Remove Diagnostic Display (ref. 5.9.2).

4.

Using a 3/8” open-ended wrench, remove the four (4) hex standoffs.

5.

Using a #1 cross tip screwdriver remove the two (2) securing screws from the driver

board heat sink. Gently remove the driver board, taking care to not damage the driver

board or heat sink.

5.10.3.2 Installation

1.

Apply Dow Corning 340 heat sink compound to the mating surface of the driver board

heat sink.

Note: Ensure there are no contaminates on the mating surface that

will impede cooling of the heat sink to the Burner Fan Plate.

2.

Place the driver board over the four (4) pem studs on the burner fan plate.

Gently ease

the board into place, ensure the screws for the connector board line up.

3.

Using a 3/8” open-ended wrench, replace the four (4) hex standoffs.

4.

Using a #1 cross tip screwdriver replace the two (2) securing screws into the connector

board.

5.

Connect the J2 Wiring Harness connector.

6.

Connect the J3 Power connector.

7.

Install Diagnostic Display (ref 5.9.2).

8.

Replace the Top Cover (ref. 5.4.1).

9.

Replace vehicle power cable from the MS Power connector.

5.10.4 Burner Fan Impeller