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Actuating Arm Stud
Clutch Actuating Arm
FIGURE 144.
Carrier Return Actuating
Arm Adj ustment
NOTE:
In no case should the shoe to clutch spring
clearance be less than
.015".
8.
Overbank Adjustment
a.
Early - With the carrier held fully to the left
against the margin stop, a clearance of
.003
11
to
.008
11
should exist between the working surfaces of
the escapement pawl and the escapement rack tooth
(Fig.
145).
Adjust the left hand margin rack bush-
ing to obtain this condition (Fig. 146).
F I GU RE
145.
Escapement Paw I Check
The overbank adjustment insures that the escapement
pawl wi II enter the correct escapem ent rack tooth
when the carrier return clutch is unlatched at the
left margin. The adjustment may be observed from
the top with the platen and deflector removed and
the left margin stop positioned toward the middle of
the rack. The overbank may also be adjusted by ad-
justing the rrc rgin rack bushing to clear the nylon
washer on the margin rack by
.025
11
to
.030"
with
the carrier resting at the-left margin. The right hand
margin rack eccentric should be loose when making
this adjustment (Fig. 146) so that the left margin
stop wi II be agai nst the stop latch on the carri er •
The
.025"
to
.030
11
compensates for the
.022"
float-
ing action in the
8scaperr~nt
pawl,
(Thp
c,)rrect
adjustment for the margin rack
ecc~ntric
is covered
under the Margin Control section.)
2-44
Loosen Margin Rack Eccentric
FIGURE 146.
Overbank Adjustment
NOTE:
Any change in overbank on machines
equipped with this early style margin rack assembly
will directly affect the clutch unlatching adjustment.
b.
Late - With the carrier resting at the left margin
stop, adjust the margin rack overbank guide (Fig.
147) left or right on the margin rack to obtain a
clearance of
.001"
to
.005"
between the stop latch
on the carrier and the left hand margin stop. On
machines equipped with a floating stop latch, the
floating action of the latch must be removed, by
pull ing the latch to the right with a spring hook,
before this clearance can be observed.
Margin Rack
FIGURE 147.
Margin Rack Overbank
Gui de Adj ustment
The adjustment of the overbank guide on the margin
rack determines the rest position of the margin rack.
The adjustment insures that the left margin stop will
set accurately when the stop is slid to the right
against the margin stop latch on the carrier. In
addition, the adjustment of the overbank guide, plus
the amount of lateral motion that the guide permits
the rack (due to the design of the guide) when the
carrier moves into the left hand margin during a
carrier return operation, automatically provides the
carri er with the overbank requi red for pr0per escape-
ment pawl re-entry at the completion of a carrier
return operation.
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