IBM Selectric Maintenance Manual page 81

latch Should
Be
Formed For Clearance
~
Small Screwdriver
FIGURE 173.1. Pawl Clearance Adjustment
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. 173.1). If excessive forming
is required, recheck and refine the adjustment of the tab
lever pawl.
5. Actuatlng Link (Fig. 173.2) - With the Tab/Sp/BS cam
latched and the intermediate lever resting against its
upstop, adjust the actuating link clevis so that the tab
torque bar hangs verti ca lIy.
Vertical :
---..;
I
Tab Torque Bar
Intermediate Lever
Mounti ng Bracket
FIGURE 173.2. Actuating Link, IS" Machine
6. Intermediate Lever Tab (Fig. 173.3) - With the tab inter-
poser released and the Tab/Sp/BScam on its high point,
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
t
.005"
to
.010"
Tab Lever Pawl
Overthrow
FIGURE 173.3. Intermediate Lever Tab
7. Lockout Lever (Fig. 173.4) - Position to clear the
torque bar by •
O~S''
to
.010"
with the torque bar at rest.
8.
NOTE: The position of the lockout lever must not choke
off the motion of the tab lever during unlatching. On
late level machines the tab lever trigger replaces the
lockout lever and is not adjustable.
~~~~~"'-- Washer
Lockout Lever
Tab Lever
FIGURE 173.4. Lockout Lever
Tab Torque Bar Support (Early) (Fig .173 .5) - With the tab
torque bar at rest, position the torque bar support (rela-
tive to the escapement plate) to clear the torque bar by
.001"
to
.006".
TabTa~j
Bar
~
I'--
.001"
to
.006"
. Closest Point
FIGURE 173.5. Tab Torque Bar Support (Early)
The purpose of the torque bar support is the same as the
retaining plate.
2-50.1