TM-9-2350-256-10

GENERAL - Continued

The grenade launcher provides self-screening smoke capability. The 12 smoke grenades, fired in salvo, produce

a smoke cloud over a 110-degree arc in 2 seconds. The cloud is 26 to 33 ft (8 to 10 m) high, 98 ft (30 m) from the

vehicle, and lasts 1 to 3 minutes depending on wind conditions. The grenade launcher consists of two British

No. 9 Mark 1 smoke grenade dischargers (Figure 1, Item 7) with canvas covers (Figure 1, Item 8), a smoke

discharger pushbutton unit (Figure 1, Item 1), two ammunition storage bins (Figure 1, Item 6), and an installation

kit composed of mounting brackets, an arming switch unit (Figure 1, Item 2), electrical wiring harness, and

exterior harness protectors.

Each discharger (Figure 1, Item 7) is a six-barreled aluminum casting approximately 10 in. (254 mm) high, 15 in.

(381 mm) wide and 18 in. (457 mm) deep, and weighs 33 lb (15 kg). One launcher is bolted to a bracket that is

mounted on the operator outside of the hull; and the other launcher is on the mechanic side of the hull.

NOTE

The discharger marked "L. Hand" is mounted on the mechanic side of the hull, and the

discharger marked "R. Hand" is on the operator side of hull.

The smoke grenade discharger pushbutton unit (Figure 1, Item 1), mounted on the bracket attached to the cab

top, near the commander cupola, has two pushbutton switches (Figure 1, Item 5) used to fire grenades. An

arming switch unit (Figure 1, Item 2), mounted next to the pushbutton unit, has a latched toggle switch

(Figure 1, Item 3) and a power-on and armed indicator light (Figure 1, Item 4). Electrical wiring harnesses connect

the pushbutton unit and arming switch to dischargers and to vehicle power source.

Two ammunition storage bins (Figure 1, Item 6) are attached to outside of vehicle, one on each side of hull. Each

storage bin (Figure 1, Item 6) holds six smoke grenades.

Figure 1.

Smoke Grenade Launcher System.

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