TM 9-1345-203-12
into detonator well, or if the area is
(7) Remove dust cover from connector on
firing device; also remove combination
subjected to artillery or mortar fire,
another test should be conducted, as
shorting plug and dust cover from end of
firing wire. Plug into the two connectors
indicated in (a) through (h) below.
to connect firing wire to firing device.
CAUTION
WARNING
BEFORE AND AFTER COMPLETION
BEFORE CONNECTING BLASTING
OF FIRING DEVICE AND BLASTING
CAP TO FIRING DEVICE (FIG. 2-8),
SAFETY BAIL MUST BE IN "SAFE"
THAT FIRING DEVICE BAIL IS IN
POSITION AND ALL PERSONNEL
"SAFE" POSITION.
WHO ARE WITHIN 250 METERS OF
FRONT AND SIDES OF MINE AND
NOTE
100 METERS OF REAR OF MINE
If time available precludes
MUST BE UNDER COVER.
conduct of a circuit test with
blasting cap removed from mine,
(8) To fire mine, position firing device bail in
then an abbreviated test may be
"fire" position.
conducted with blasting cap
inserted into detonator well. If an
NOTE
abbreviated test is conducted, all
When enemy troops approach within
personnel must be under cover at
20 to 30 meters of front of mine, fire
least 250 meters from front and
mine.
sides of mine and 100 meters to
rear of mine.
(9) Fire by actuating firing device handle with
One M40 test set is provided with
a firm, quick squeeze, then release.
each case of six M18Al's. The test
WARNING
THE M57 FIRING DEVICE MAY NOT
BE
SAFE IF HANDLE
IS
firing circuit, including M57 firing
DEPRESSED OR SUSTAINS A
device. A shipping tag on carrying
SHARP IMPACT, EVEN WITH BAIL
strap marks bandoleer which
UP IN "SAFE" POSITION, WHEN IT IS
contains test set.
CONNECTED
TO
THE
FIRING
CIRCUIT. MOVEMENT OF HANDLE
(a) Remove dust cover from connector
CAN
PRODUCE
ELECTRICAL
of firing device and from female
ENERGY AND PREMATURE MINE
connector of M40 test set.
DETONATION. THIS EFFECT MAY
(b) Plug test set into firing device (fig.
BE INTERMITTENT AND IT VARIES
2-8). Leave combination shorting
BETWEEN AND AMONG M57 LOTS.
plug and dust cover assembled on
other end of test set.
(10) The detailed circuit testing procedure is as
(c) Position firing device bail to "fire"
follows: Test M57 Firing Device and M4
position, actuate handle of firing
Blasting Cap Assembly before inserting
device with a firm, quick squeeze,
M6 cap into mine detonator well. If an
and observe flashing of lamp
extended period of time elapses between
through test set window.
circuit test and insertion of blasting cap
2-20