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 897 of 1168

nut (17).

c. Siren Assembly Installation

TM 9-2320-280-20-3

12-185. SIREN AND WARNING LIGHT INSTALLATION (Cont’d)

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Using fabricated siren bracket (1) as a template, locate, mark, and drill six 0.343-in. (8.7-mm)

diameter holes (2) in right side of roof (3).

Locate, mark, and drill 0.75-in. (19-mm) diameter hole (4) in right side of roof (3).

Cut roof panel insulation (5) away for access to mounting hardware.

Cut siren lead (28) to a length of 5.0 in. (12.7 cm).

Install shell (27), sleeve (26), and terminal (25) on siren lead (28).

Install gasket (11), plate (10), and panel (15) on siren bracket (1) with four capscrews (16),

lockwashers (8), and nuts (7).

Install siren assembly (6) and fabricated ground wire “I” (9) on siren bracket (1) with two

capscrews (16), lockwashers (8), and nuts (7).

Install siren bracket assembly (1) on roof (3) with four screws (14), two screws (18), six

washers (13), and locknuts (12).

Connect connector (24) of fabricated wire "H" (23) to siren lead (28) and route wire “H” (23) and

ground wire "I" (9) through hole (4).

Split grommet (20) and install grommet (20) in hole (4).

Install siren wires (23) and (9) on siren bracket (1) with clamp (19), washer (22), screw (21), and

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