IBM Selectric - Backspace Rack Removal; Escapement Cam Follower Removal; Operational Cam Check Pawl; Shift Arm Removal

SHIFT MAGNET ASSEMBLY REMOVAL
1
• Remove the spring from the hold armature (#1, Figure 39).
2. Loosen the front mounting stud (#2, Figure 39).
3. Loosen the rear mounting screw (#3, Figure 39).
4. Slide the assembly forward and remove it.
S. The following adjustments should be checked after the
shift magnet assembly is removed.
a. Shift-magnet assembly adjustments
Figure 39. Shift Magnet Assembly Removal
BAC KSPACE RAC K REMOVAL
1. Remove the motor.
2. Remove the backspace-rack spring (#1, Figure 40).
3. Remove the three backspace-rack mounting studs (#2,
Figure 40), one of which is not shown, and remove the
rack.
4. The following adjustments should be checked after the
backspace rack is replaced.
a • Tab-Lever Stop
b. Backspace Rack
c. Intermediate Lever
Figure 40. Backspace Rack Removal
SHIFT ARM REMOVAL
1. Position the carrier to the left and remove the right dust
cover.
2. Remove the shift-contact assembly (#1, Figure 41).
3. Remove the shift-arm brace (#2, Figure 41).
4. Loosen the set screws that hold the shift-arm pivot (#3,
Figure 41).
5. Rotate the head counterclockwise, remove the tape from
the shift-arm pulley, and put it on the tilt pulley.
6. Remove the shift-arm pivot and arm.
7. The following adjustments should be checked after the
shift-arm is replaced.
a. Typehead Homing
b. Shift Contact Adjustments
Fi gure 41. Sh i ft Arm Remova I
OPERATIONAL
CAM CHEC K PAWL AND
ESCAPEMENT CAM FOLLOWER REMOVAL
1
• Position the carrier to the left and remove the right dust
cover.
2. Disconnect the escapement I ink (# 1, Figure 42).
3. Remove all C -cl ips from the check pawl shaft (#2, Figure
42) .
4. Slide the shaft to the left until the desired part is free.
NOTE: Remove spri ngs on I y as necessary.
I
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Figure 42. Operational Cam Check Pawl and
Escapement Cam Follower Removal
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