Adjust
Clearance
For
.015"
To
.020"
Actuating
Arm
Stud
Clutch
Actuating
Arm----~......;..:..:...:......,,:..:...:......:..:..:..:,;.
""'-'---
FIGURE
144.
Carrier
Return
Actuating
Arm
Adj ustment
Clutch
Spring
NOTE:
In
no case should the shoe to
clutch
spring
clearance
be less than
.015".
6.
Overbank Adiustment
"'"
\"/ith
the
CCidei
held fully to the
left
against
the
margin
stop,
a
clearance
of
.003"
to
.008" should
exist
between the working surfaces
of
the
escapement
pawl and the escapement
rack
tooth (Fig
...
145). Adjust the
left-hand
margin rock bushing
to
ob-
tain
this
condition
(Fig.
146).
FIGURE
145.
Escapement Pawl
Check
The overbank adjustment insures
that
the
escapement
pawl
wi
II
enter
the
correct
escapement 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
rock.
The overbank may also
be
adjusted by
ad-
justing
the
lTD rgin rock bushing
to
clear
the nylon
washer on
the
margin
rack
by
.025"
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 will be
against
the
stop latch on
the
carrier.
The
.025"
to
.030"
compensates for
the
.022"
float-
ing
action
in
the
escapement
pawl.
(The
correct
adjustment for the margin rack
eccentric
is covered
under the Margin
Control
section.)
FIGURE
146.
Overbank
Adjustment
NOTE: Any change in overbank on machines
equipped with this
early
style margin rock assembly
will
directly
affect
the
clutch
unlatching adjustment.
7.
Clutch Unlatching - With
either
style margin rock held
to
its extreme left position, the
carrier
return latch
keep-
er
should
clear
the latch by
.005"
to
.015"
at
the
un-
latching point (Fig. 147).
Check
by manually holding
the
latch
at
the
unlatching point while
the
machine
is
idling.
Lengthen or shorten the
carrier
return unlatching
link
to
obtain
this
clearance.
---...
"'"
f-- \
Margin Rack
Held
To
The
Left
""L\
I
"::::,,:,
-/
-
Latch Held Even
With The Keeper
Corner
2-44
FIGURE
147. Clutch Unlatching Adjustment
NOTE: Should
the
clutch
fail to properly
latch
(on
machines equipped with
the
early
margin rock)
after
the
clutch
unlatching adjustment has been
completed,
check
the margin rack
eccentric
adjustment which
is
10-
~ated
in
the
Margin Control
section.
The
eccentric
may
be
holding the rock too far
to
the
left
restricting the
margin
rack
motion
thereby
reducing
the
amount
of
bite
that
the
latch
may
take
on the
keeper.
8.
Torque Limiter -
The
t.orque limiter should transmit 1
to
2 pounds pull on the
carrier
as the
carrier
is unlatching
the
clutch
at
the
left margin.
If
a spring
scale
is
available,
the
adjustment may be
checked
by holding against the
carrier
with the push end
of
the
scale
and allowing
the
carrier
to slowly unlatch
the
clutch
at
the
left margin.
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