IBM Selectric Reference Manual page 79

OPERATIONAL CONTACT AN.D LATCH ASSEMBLY ADJUST-
MENTs (UNIT REMOVED)
1.
2.
3.
Contact Strap Position (Fig.
174) -
'With the contacts
latched, posi ti on the straps under the two mounti ng
screws for the following conditions:
Latches Centered
On
alP
Stops
Latchr
t
O/P
Stop
FI GURE
174.
Contact Air Gap
a. Latches centered on
O/P
stops.
b. Vertical alignment of mating contacts.
c. All contacts of each stack must Ii e in the same
horizontal plane (individual forming may be re-
quired .)
Contact Air Gap (Fig.
174) -
Rotate the contact mount-
i ng bracket under its fou r screws for
.015
II
to
.020
II
contact air gap'" see Fig.
175
for mounting screws.
Normally
O~en
Contact Rise (Fig.
175) -
With the con-
tacts unlatc ed, form the N70 straps for
.005"
minimum
rise.
~~-
Latch (Unlatched)
Llil
Interposer
(Un latched)
4.
FI GURE
175.
N/O
Contact Rise
Latch Stop (Present on Late Models) Fig.
176 -
Position
so that the end of the
O/P
stops are flush with the for-
ward latch surface.
2-61
NOTE: Form individual latches as required in the
area shown in Fig.
176.
Surfaces
Flush
O/P
latch
Form Latch
In This Area
FIGURE
176.
Latch Stop
OPERATIONAL CONTACT AND LATCH ASSEMBLY ADJUST-
MENTs (UNIT INSTALLED)
la. Assembly (with latch stop) Position (Fig. 177) - With
the operational interposer released, position the unit
(front to rear) so that the latches clear the
O/P
stop~
by
.005"
to
.015".
Interposer
(Unlatched)
Form La tch
_<
In This Area
°/P-.....,j"j,-(
FIGURE 177.
Assembly Position (With Latch Stop)
lb. Assembly (without latch stop) Position (Fig. 178) - With
the contacts latched, position the assembly (front to
rear) for the following inter-related conditions.
a. The latch just touches the interposer extension.
b. The forward latch surface is flush with the end of
the
alP
stop.