Tilt Tape Replacement; Rotate Selection Differential Removal - IBM Selectric Maintenance Manual

TILT TAPE REPLACEMENT
*
3. Remove the two screws (#1, Figure 20) that hold the plate
to the frame. Remove the contact assembly, holding it to
the front with
0
rubber band. Note: Photos and procedures are for Gearless Tilt.
Gear type may vary slightly. 4.
Disconnect the rotate link at both ends and remove it
(#1, Figure 21).
1. Remove the left and right dust covers. 5.
Remove the latch-bail spring (#2, Figure 21).
Remove the motor.
2. Position the carrier 3" from the left frame. 6.
3. Half cycle a zero rotate, 0 Tilt character (to lock
rota~_
7.
spring tension). -
S".
Remove the rotate-latch springs (#1, Figure 22).
Remove the check-latch spring (#2, Figure 22).
4. Remove the broken pieces of tape from the machine. 9. Remove the guide-bracket mounting stud and screw (#3,
5. Place the eyelet on the tilt pulley bellcrank (#1, Fig-
ure 19). "
6. Thread the tape around the left tilt-arm pulley, tight
tilt-arm pulley, and take up the slack in the tape.
7. Withdraw the rotate detent, turn the head counter-clock-
wise to relieve the rotate-tape tension, tilt the head to
the front, and restore the detent.
8. Remove the tape retaining pin from the carrier and insert
the ti It tape, keeping it on top of the rotate tape.
9. Restore the type head to the rest position.
10. Check the tilt detent adjustment. (R.H. Tilt Pulley)
FIGURE 19. Tilt Tape Replacement
ROTATE SELECTION DIFFERENTIAL REMOVAL
1. Position the carrier to the extreme right.
2. Remove the left dust cover, platen, feed rolls, and paper
deflector.
FIGURE 20. Rotate Selection Differential Removal
Figure
22). "
FIGURE 21. Rotate Selection Differential Removal
10. Remove the balance-arm mounting stud (#1, Figure 23).
11. Disconnect the minus-five bail drive link from the right
end of the balance arm (#2, Figure 23).
12. Disconnect the tilt-differential spring (#3, Figure 23).
13. Rotate the cycle shaft until the cam followers are on the
low points of the cams.
14. Remove the rotate-differential assembly.
15. The following adjustments should be checked after the
rotate-selection-differential assembly is replaced:
a. T ypehead hom i ng
b. Rotate latch clearance
c. Rotate differential guides
*
Not present on all prInters.
FIGURE 22". Rotate Selection Differential Removal
3-6