TM-9-2320-280-20-3

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 3 OF 3

JANUARY 1996

TM-9-2320-280-20-3 - Page 533 of 1168

11-185. AIR INTAKE DUCT DOOR REPLACEMENT

This task covers:

a. Removal

b. Installation

a. Removal

1.

Remove push on nut (6) and slide control cable (5) off arm (7). Discard push on nut (6).

2.

Remove two capscrews (4) and lockwashers (3) from duct door (2) and intake duct (8). Discard

lockwashers (3).

3.

Slide duct door (2) right, and remove duct door (2) and bushing (1) from intake duct (8) and

bracket (9).

NOTE

Evaporator intake duct door and heater intake duct door are

replaced basically the same. This procedure covers the evaporator

duct door.

INITIAL SETUP:

Applicable Models

M997, M997A1, M997A2

Tools

General mechanic’s tool kit:

automotive (Appendix B, Item 1)

Materials/Parts

Push on nut (Appendix G, Item 227)

Two lockwashers (Appendix G, Item 134)

Manual References

TM 9-2320-280-10

TM 9-2320-280-24P

Equipment Condition

• Air intake filter removed (TM 9-2320-280-10).

• Blower housing opened (para. 11-198).

b. Installation

1.

Install bushing (1) on bracket (9).

2.

Install arm (7) through intake duct (8) and slide duct door (2) left into bushing (1).

3.

Install duct door (2) on intake duct (8) with two lockwashers (3) and capscrews (4).

4.

Slide control cable (5) onto arm (7) with push on nut (6).

TM 9-2320-280-20-3

Change 2

11-269

FOLLOW-ON TASKS: • Install air intake filter (TM 9-2320-280-10).

• Adjust duct door control cable (para. 11-199).