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Exercising Procedures (General).
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TB-9-1000-234-13 Exercising of Recoil Mechanisms and Equilibrators Manual
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Figure 1-1. Exercising Recoil Mechanism of Towed Artillery in Traveling Position by using Winch on Wrecker Trick
TB 9-1000-234-13
d. Exercising Procedures With Power Winch.
(1) Use a rope or cable of sufficient strength and length to pull the cannon out-of-battery. The size rope needed
is 1 1/2 inch; the size steel cable needed is 7/8 inch. Secure one end of the rope or cable to a 4 by 4 by 24 inch piece of
wood, and install the rope or cable through the cannon bore (figures 1-1, 1-2, and 1-3). Adjust the cannon elevation so
that the rope or cable installed through the bore and connected to a winch will not rub the rifling. To prevent the rope from
being damaged, it should be bent over a sleeve instead of a small diameter hook or cable. Select a winch with the
necessary capacity for the amount of pull required. If a winch of the necessary capacity is not available, a block and tackle
may be used with the winch, or independently, to increase the pulling force. If a steel cable is used, protect the lands and
grooves with strips of wood. Be careful that the material used for securing the rope or cable at the muzzle end will not slip
and damage the bore.
WARNING
Keep the winch cable as short as possible. The shorter the cable, the safer the operators are from
danger of broken cable. Use of a winch with a power-reverse is the best way to prevent excess
unreeling and snarling of the cable.
(2) A steel bar with a reinforced disk head to press against the muzzle may be constructed for use in the bore
instead of a rope or cable, when a sufficient number of weapons are to be exercised to warrant it. Wrap the bar with cloth
to keep it from damaging the lands. This steel bar has the following advantages:
(a) It can be inserted quickly and easily through the bore.
(b) Dragging a hook over the lands of the rifling becomes unnecessary.
(c) The bar may have an eye on the end, to which the winch hook can be connected easily.
(d) The danger of a broken cable damaging the bore is eliminated.
1-3

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