TM-9-1040-267-20-P
LAUNCHER, GRENADE, SMOKE: SCREENING, RP, M243; RP, M257; RP, M259
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
FEBRUARY 1984
TM-9-1040-267-20-P - Page 14 of 108
1-4
Change 1
1-9. DIFFERENCES BETWEEN MODELS.
M243
M257
M259
Components
Launcher Launcher Launcher
DISCHARGER CAP (1 per discharger tube)
DISCHARGER
2 each
DISCHARGER CAP
8 each
ARMING FIRING UNIT
1 each
GRENADE STOWAGE BOX
2 each
1-10. EQUIPMENT DATA.
US Customary
DISCHARGER
Weight . . . . . . . . . . . . . . . . . . . .
.11.
.2 lb
Width . . . . . . . . . . . . . . . . . . . . .
.11.5 in.
Height . . . . . . . . . . . . . . . . . . . . . . 9.5 in.
Depth . . . . . . . . . . . . . . . . . . . . . . 6.31 in.
Tubes: (4 each)
Length . . . . . . . . . . . . . . . . . . . 7.13 in.
Inner diameter . . . . . . . . . . . . . 2.62 in.
2 each
2 each
8 each
8 each
. . .
1 each
. . .
. . .
(Metric)
(5.1 kg)
(292 mm)
(241 mm)
(160 mm)
(181 mm)
(67 mm)
Weight . . . . . . . . . . . . . . . . . . . .
.0.1 lb
Outer diameter . . . . . . . . . . . . .
.3.37 in.
Depth . . . . . . . . . . . . . . . . . . . . .
.2.75 in.
ARMING FIRING UNIT
Weight . . . . . . . . . . . . . . . . . . . .
.1 lb
Width . . . . . . . . . . . . . . . . . . . . .
.3.06 in.
Height . . . . . . . . . . . . . . . . . . . . .
.5.43 in.
Depth . . . . . . . . . . . . . . . . . . . . .
.3.27 in.
GRENADE STOWAGE BOX (compartments)
Weight . . . . . . . . . . . . . . . . . . . .
.40 lb
Length . . . . . . . . . . . . . . . . . . . .
.15.75 in.
Width . . . . . . . . . . . . . . . . . . . . . . 4.25 in.
Height . . . . . . . . . . . . . . . . . . . . .
.10.75 in.
TM9-1040-267-20&P
(0.05 kg)
(86 mm)
(70 mm)
(0.45 kg)
(78 mm)
(138 mm)
(83 mm)
(18.1 kg)
(400 mm)
(108 mm)
(273 mm)
Section Ill. PRINCIPLES OF OPERATION
1-11. M243 LAUNCHER.
a. Electrical/Connections. Launcher uses vehicle’s electrical system.
d.
Firing.
Pressing push switch on arming firing unit sends electrical
Electrical receptacle connector on each discharger and on arming firing unit
charge to dischargers. A resistor in each discharger controls and directs flow of
connects them to electrical cables in the vehicle.
electricity. The charge flows through electrical contacts in each discharger tube
b.
Loading Dischargers.
Smoke grenades are muzzle-loaded into dis-
to an electrical firing spring clip in grenade base.
charger tubes.
c.
Arming.
Moving toggle switch lever on arming firing unit from OFF to
1-12. M257 LAUNCHER.
Operating principles are same as for M243 launcher
ARM closes electrical circuit. Arming firing unit indicator light goes on to warn
(para 1-11). Arming firing unit is part of vehicle’s controls.
that launcher is armed for firing.
1-13. M259 LAUNCHER.
Operating principles are same as for M243 launcher
(para 1-11).
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