IBM Selectric Maintenance Manual page 22

plate as nearly as possible for the prescribed latch to
pusher clearances (Fig. 8)
1.
Pusher Bai I Eccentri cs (Fig. 7) - Adjust so that the top
edge of the follower arms are flush with the pusher bai
I.
These Surfaces Flush
. - - - - - - Pusher Bai
I
Eccentric
Fo
I
lower Arm
FIGURE 7.
Pusher Bai
I
• 030" to
.040" -
R2A
II~.--
.025" to .035" - T2,
TI,
R2, R1, R5
I
It,~he,
Extensi on
d' "
NOTE:. This adjustment should
be made with all parts at rest
(cycle clutch latched).
Form Within Circled Area
FIGURE
8.
latch Pushers
~~M'n
•
• 002"
Pusher
latch Extensi on
FIGURE 9. Pusher Clearance
2-3
2. Latch Pushers T2, TI, R2, R1,
&
R5 (Fig. 8) - Form to
clear their respective latch extensions by .025" to .035".
3.
Latch Pusher, R2A (Fig, 8) - Form to clear latchexten-
sion by .030" to .040".
Malselection may be caused by the latch poshers contacting
their latch extensions when an unselected pusher is against its
armature. There should be a minimum of .002" clearance
(Fig.
9)
between the pusher and the latch extension when the
pusher is against its armature. To check this adjustment, turn
machine power off, trip the cycle clutch, and hand cycle a
few degrees through a cycle. The pusher cam follower should
be on the low dwell of the pusher cam.
PRINT SELECTION MAGNET ASSEMBLY (Early Style)
NOTE:
For complete adjustment
I
the magnet unit shou Id be re-
moved. To prevent interference from the trip bail, turn
the high points of the pivot eccentri cs to the top •
1. Pivot Plate (Fig. 10) - Adjust for a clearance of .001"
to .006" between the yoke and armatures with the arm-
atures manually attracted. Measure clearance of the
outside armatures (T2
&
R5).
.001" to .006"
Yoke _---!mror
u::==~
lliIt=r---
Pivot Plate
I~--Guide
Plate
FIGURE 10. Pivot Plate
2. Guide Plate (Fig. 10) - Position as follows:
a. Vertically - to provide equal spring tension on all
armature springs.
b. Horizontally - so that all armatures are centered in
the guide slots.