IBM Selectric Service Manual

Bushing
FIGURE 150.1 Overbank Adjustment
b. With the margin stop pin of the left hand margin stop
fully
seated in the extreme left tooth of the margin
rack, adjust the margin rack latch bracket assembly
to obtain .001" to .008" clearance between the left
hand stop on the carrier and the left hand margin stop
(Fig.
150.2). Make sure the margin rack latch is
touching the right hand margin rack bushing.
Bracket
FIGURE 150.2 Margin Rack Latch Adjustment
5. Clutch Unlatching - Adjust the carrier return unlatching
link to obtain .001" to .015" clearanc;e between the car-
rier return latch and latch keeper at the point of unlatch-
ing (Fig. 150.3). Check by manually holding the latch at
the unlatching point while the machine is idling.
FIGURE 150.3 Clutch Unlatching Adjustment
6. Torque Limiter - The torque limiter should transmit 1.5 to
2.5 pounds pull on the carrier as the carrier is unlatching
the clutch at the left margin. The adjustment may be check-
ed by holding against the carrier with the push end of a
spring
scale and allowing the carrier to slowly unlatch the
clutch. .
The adjustment is made by the eccentric stud in the torque
limiter
hub. If sufficient adjustment is not available at
the eccentric, the torque I imiter spring may be sh if ted on
the hub by positioning the torque limiter spring clamp.
7. Margin Rack Latch Bellcrank - Adjust the position of the
margin rack latch bellcrank to the margin latch bellcrank
bracket assembly by forming the stop lug on the bracket
until the front portion of the bellcrank is parallel to the
rear edge of the bracket (Fig. 150.4).
FIGURE 150.4 Margin Rack Latch Bellcrank
8. Margin Rack Latch Bellcrank Bracket Assembly - Position
the bracket assembly in its slotted mounting holes to ob-
tain the following conditions:
a. With the carrier return clutch latch at rest, the lug on
the latch bellcrank should clear the leading edge of
the clutch latch lug by .015" to .025" '(Fig. 150.5).
FIGURE 150.5 Margin Rack Latch Bellcrank Bracket
2-45.3

IBM Selectric Specifications

General

Type	Electric typewriter
Introduced	1961
Keyboard Layout	QWERTY
Carriage Return	Electric
Manufacturer	IBM
Printing Technology	Typeball (golf ball)
Power Source	AC Power
Power Supply	120V AC