TM 9-2350-256-101.The grenade launcher provides self-screening smoke capability. Twelve smoke grenades, firedin salvo, produce a smoke cloud over a 110 arc in 2 seconds. The cloud is 26 to 33 feet (8 to 10meters) high, 98 feet (30 meters), from the vehicle and lasts one to three minutes depending onwind conditions. The grenade launcher consists of two British No. 9 Mark 1 smoke grenadedischargers (1) with canvas covers, a smoke discharger pushbutton unit, two ammunition storagebins, and an installation kit composed of mounting brackets, an arming switch, electrical wiringharness, and exterior harness protectors.2.Each discharger (1) is a six-barreled aluminum casting approximately 10 in. (254 mm) high, 15 in.(381 mm) wide, 18 in. (457 mm) deep, and weighs 33 lb (15.0 kg). One launcher is bolted to abracket that is mounted on the left outside of the hull, the other on the right side of the hull.3.Both dischargers are wired to launch grenades from alternate barrels upon activation of eitherpushbutton on the smoke grenade discharger pushbutton unit. Activation of one pushbutton willlaunch six grenades, three from each discharger. Activation of both pushbuttons simultaneouslywill launch all twelve grenades. A single discharger barrel cannot be fired. The smoke grenadescreening pattern is shown in the following illustration.2-165
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