Operational Latch Bracket Removal - IBM Selectric I/O Reference Manual

FIGURE 44. Operational Magnet Assembly Removal
OPERATIONAL LATCH BRACKET REMOVAL
1. Remove the feedback-col)tact-assembly bracket by
loosening the two screws (#1, Figure 45).
2. Remove the mainspring and hub (#2, Figure 45).
Caution: Care must be used when unwinding and re-
moving main spring.
3. Disconnect the backspace-latch spring (not shown).
4. Remove the back plate (#3, Figure 45).
5. Disconnect the backspace-rack spring (#1, Figure 46).
6. Disconnect the cam-follower spring (#2, Figure 46).
7. Disconnect the spacebar and tab-latch springs (#3,
Figure 46).
8. Disconnect the tab-bellcrank I ink clevis (not shown).
9. Disconnect the detent spring (#4, Figure 46).
10. Disconnect the carrier-return latch spring (#5, Figure
46) .
11. Remove the index-selection link (#6, Figure 46).
FIGURE 45. Operational Latch Bracket Removal
8 II
6
5
3
FIGURE 46. Operational Latch Bracket Removal
12. Remove the carrier-return eccentri c by removi ng the
eccentri c nut (#7, Fi gure 46).
13. Remove the escapement link (#8, Figure 46).
14. Disconnect the carrier-return actuating spring and
carrier-return actuating-arm spring (#9, Figure 46).
15. Remove the escapement-torque-bar restoring spring (#10,
Figure 46).
3-12
16. Remove the two mounting screws (the left one is not
visible) and one nut (#11, Figure 46).
17. Work the operational-latch bracket out of the machine.
18. The following adjustments should be checked after the
operational-latch-bracket is replaced:
a. C5andC6timing
b. Mainspring tension
c. Trigger guide
d. Escapement I ink
e. All operational latch clearances
f. Carrier return
g. Backspace
6 10 \I
12 8
'fII
~
0
.~
C)
FIGURE 47. Shift Cam Removal