IBM Selectric Reference Manual page 105

6. Feed Roll Adjustment
a. Early Adjust the eccentri cs with the high
points to the rear so that three tab cards inserted be-
tween the platen and the rear Feed rolls wi II cause
a clearance of .008" to .012" between the Front
Feed rolls and the platen (Fig. 261). The clearance
shou Id be equa I on both ends of the Feed roll.
Three Tab Cards
Make Adjustment
Here
Front Feed Roll Arm
FIGURE 261. Feed Roll Adjusting Eccentrics (Early)
b. late- The Front Feed roll adjusting arms
should be adjusted as Follows: When two tab cards
are placed between the Front Feed rolls and the
platen, the rear Feed rolls shoul.d clear the platen
(Fig. 262). When one tab card is placed between
the Front Feed rolls and the platen, the rear Feed
rolls shou Id touch the platen.
Check Clearance Here
Rear Feed Roll
7.
Loosen Here
FIGURE 262. Feed Roll
Adjustin~~
Arm (Late)
Paper Release - Adjust the Feed roll release arm (Fig.
263) to obtain a release clearance of .055" to .065"
between the rear Feed roll and the platen.
2-87
Feed Roll Release Lever Adjust Feed Roll Release Arm
Located At Right End Of Feed
Roll Actuating Shaft
8.
9.
FIGURE 263. Paper Release Adjustment
Excessive clearance can cause interference between the
front feed roll and the carri
eri
whereas insuffi ci ent
clearance will not permit straightening of thick paper
packs.
NOTE: The clearance should be the same at each end
of the feed roll. The clearance can be equalized by
adjusting either the left or right feed roll release lever
(Fig. 263) .
Deflector - Position the deflector
by
forming the de--
flector supporting tabs on the front and rear feed roll
arms so that a clearance of .010" to .020" exists be-
tween the front and rear of the deflector and the
platen (Fig. 264). Three tab cards inserted between the
platen and the deflector (at the front and rear) should
provide a slight drag. No drag shou Id be felt when one
tab card is inserted.
FIGURE..264. Deflector Adjustment
Paper Bai I
a. Bai I Shaft - The shaft should be positioned in the
right hand bai I arm so that each arm can be pu lied
forward the same distance from the platen before
the enti re ba i I beg i ns to move.