Figure 2-38. Position of firing device when set for pressure

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112

TM 9-1375-213-12

(d) Secure blasting cap or time fuse into cou-

pling body as desire (c above).

(e) Assure safety pin is in place. Screw cou-

pling body into switch.

NOTE

Removal of the safety pin is the final

step in all operating modes. If the

safety pin is inadvertently removed

prior to step (g) stop all procedures and

refer to disarming procedures (e below).

(f) Attach charge, etc. to coupling body as

desired,

WARNING

The pressure plate must not be heavy

enough to activate switch by itself', The

maximum allowable weight is 9 pounds.

(g) Place pressure plate to rest on Sear Plate.

This should make the square-head pin easy to

move. DO NOT REMOVE IT.

Figure 2-37. Coupling Body.

removal. Assure legs of safety pin are straight.

NOTE

If legs are bent, straighten and press them

ttogether with pliers.

The instruction sheet packed with the

(b) Obtain a piece of wood or some other suit-

M142 states that it can be -preloaded

able object to act as a pressure plate, max

with up to 25 pounds in the pressure

weight less than 9 pounds (see warning step (g)

mode. THIS IS AN ERROR. THE

below).

MAXIMUM ALLOWABLE PRELOAD

(c) Secure switch to a fixed object with nails

IS 9 POUNDS.

or screws.

Figure 2-38. Position of firing device when set for pressure.

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