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 163 of 288

TM 9-2540-207-14&P

5-119 / 5-120

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Burner Fan Impeller (continued)

3.

Apply loctite 243 (blue) to the burner fan motor shaft.

Using a 7/16” open wrench and a

Philips #2 screw driver, place the wrench over the nut and use the screwdriver to hold

the motor shaft in place while turning the nut.

4.

Ensure the impeller nut is secure and that the impeller spins freely.

Note:

When replacing an impeller, always ensure that a new

impeller nut is used.

5.

Install Burner Fan Assembly on Top Housing (ref 5.10.1)

5.10.5 Burner Fan Motor

With reference to figure 5.10-6.

5.10.5.1 Removal

1.

Remove the burner fan motor impeller (ref 5.10.3).

2.

With the burner fan plate assembly upside down.

Use a #1 cross tip screwdriver to

remove the four (4) securing screws.

3.

Gently pull the burner fan motor from the plate.

5.10.5.2 Installation

1.

With the burner fan motor upside down, place the burner fan plate in position and align

the four (4) securing screw holes.

Apply loctite 243 (blue) to the four (4) screws and use

a #1 cross tip screwdriver to tighten the four (4) securing screws.

Note:

The Burner Fan Motor bolt pattern is keyed to align the motor

wiring towards the burner fan driver board.

2.

Install the burner fan motor impeller (ref 5.10.3).