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5.
The adjustment insures that the escapement pawl wi II re-
enter the rack quickly to minimize the chances of en-
tering the wrong rack tooth. If excessive clearance is
present
I
it is also possible that the tab keylever and as-
sociated parts might not have enough throw to positively
latch the tab lever each time.
The upright lug of the tab latch may be formed with the
3"
screwdriver by using it as a lever through the hole in
the escapement bracket (Fig.
164).
If excessive formi ng
is required, recheck and refine the adjustment of the tab
lever pawl.
Actuating Link (Fig.
165) -
With the Tab/Sp/BScam
latched .and the intermediate lever resting agai nst its
upstop, adjust the actuating link clevis so that the tab
torque bar hangs vertically.
Vertical
:
~
I
Tab Torque Bar
Intermediate Lever
Mounting Bracket
FIGURE
165.
Actuating Unk,
15"
Machine
NOTE:
On machines with the new style (Fig.
173)
in-
terlock contact form the upstop up out of the way.
6.
Intermediate Lever Tab (Fig.
166) -
With the tab inter-
poser released and the Tab/Sp/BS cam on its high 'point
I
form the intermediate lever tab so that the tab lever pawl
overthrows the tab latch by
.005"
to
.010".
Not Present On
Machines With New
Style Interlock Contact
Form This Tab
Tab Latch
t
7.
Tab Lever Overthrow Stop & Retaining Plate (Late) -
(Fig.
167)
a.
Retai ni ng Plate - wi th the carri er centered, adj ust
the retai ni ng plate (Fig.
167)
front to rear so a
clearance of
.001"
to
.002"
exists between the
raised area of the escapement bracket and the tab
torque bar.
b.
Tab Lever Overthrow Stop - with the tab cam on its
high point, form the lug on the rear of the retaining
plate (Fig.
167)
for a clearance of
.005"
to
.010"
between the tab lever trigger and this lug.
The adjustment of the retaining plate prevents lost
motion in the torque bar which is caused by flexing.
The overthrow stop prevents the tab lever from over-
throwing into the tab rack. If the tab lever does
contact the tab rack the lever will be un latched and
an erroneous tab resu Its.
Trigger
FIGURE
167.
Tab lever Overthrow Stop &
Retaining Plate (New)
8.
Torque Bar Overthrow Stud (Late) - With the tab cam on
its high point, form the upright lug on the LH end of the
tab torque bar for a clearance of
.001
11
to
.010"
between
this lug and the overthrow stud (Fig.
168).
Tab Torque Bar
Interlock Switch
Trigger
FIGURE
168.
Torque Bar Overthrow Stud (New)
The overthrow stud serves two purposes. It assists the
tab lever overthrow stop and also prevents the torque
bar from rotati ng to a poi nt at whi ch the interlock trig-
ger cou Id get under the torque bar lug.
9.
Lockout Lever (Fig. 169) (Early) - Position to clear the
torque bar by
.005"
to
.010"
with the torque bar at rest.
.005"
to
.010"
NOTE:
The position of the lockout lever must not choke
off the motion of the tab lever during u.nlatching. On
late level machines the tab lever trigger replaces the
lockout lever and is not adjustabie.
Tab Lever Pawl
Overthrow
FIGURE 166.
Intermediate Lever Tab
2-49
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