Mec 8567 Grabber - Page 14

MEC AUTO-CYCLE MECHANISM
Your MEC GRABBER is equipped with the exclusive
Auto-Cycle Bar mechanism. This mechanism in no way
affects the flexiblity of the pivoting measure. Powder,
shot or charge bar can be changed as easily as with
any other MEC model.
Adjustment
While the unit was adjusted when the actuating rod was
assembled, it may be necessary to readjust because
of severe handling during shipment. To check, hold
press handle at bottom stop position. Charge bar should
now be all the way to the left. If charge bar is not as
far left as it will go, use adjusting nut (A). Bar and han¬
dle must be synchronized so that charge bar will hit left
hand stop as handle hits bottom on down position. It
is best to check this with machine empty.
Auto-Cycle is activated by the compression of the
Reprime Spring No. 8025, Photo No. 47, at the time that
the primer is being seated. The containers need not be
in position to check the action, and we suggest they
be removed or that they be emptied. The measure
assembly must be tipped forward in an upright and level
loading position, the charge bar positioned to the left
as illustrated with the carrier empty, the handle can be
depressed and the bar will remain locked to the left in
the illustrated position. With the handle depressed, the
670E, trip rod bracket, will engage the large diameter
at the lower end of the trip rod, maintaining the com¬
pression of the 670D, trip spring. Upon inserting a shell
in the carrier and moving it to the reprime station and
depressing the handle, the spring, compresses and the
670E, trip rod bracket, no longer engages the larger
diameter at the lower end of the trip rod. This relation¬
ship no longer holds the compression of the 670D, trip
spring, and its expansion causes the bar lock to drop
down and upon raising the handle, the charge bar
moves to the right to drop the powder. Upon moving
the shell to the wad ramming station without a shell at
the reprime station, the trip spring is again compress¬
ed by the engagement of the trip rod bracket with the
large diameter at the lower end of the trip rod and the
670B, lock spring, lifts the 670A, bar lock, to again main¬
tain the position illustrated.
The full travel of the charge bar is required to permit
pivoting the bar lock. The travel of the charge bar is
controlled by the adjusting Nut A, and it should be posi¬
tioned as described in the first paragraph. It is man¬
datory that the measure assembly be upright and level
and that the reprime spring, compresses a minimum
of 3 / 16 inch when a shell is in position to receive the
powder charge. To position the bar for autocycling, the
bar must be moved to the left either manually or by
depressing the handle to allow the bar lock to hold the
bar in the extreme left position.
Factory adjustment has positioned the reprime tube
adequate to maintain charge bar operation and seat the
primer in low base shells under normal conditions.
Lowering the tube will provide increased primer seating
pressure with increased handle load. If preferred, to
reduce the handle load, the reprime tube may be raised
when reloading is limited to only high base shells.
Operating Manually
Under some conditions, such as when abrasive powder
or heavy shot is to be used, it may be desirable to
operate charge bar manually. To do this, remove bar
lock and return spring, and remove actuating rod.
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