IBM Selectric Service Manual

Section 3. Removals
CYCLE CLUTCH AND CYCLE SHAFT REMOVAL
1 • Remove the covers.
2. Position the carrier to the extreme right.
3. Remove the degree wheel pointer (#1, Figure 1).
4. Remove the degree wheel (#2, Figure 1).
5. Remove the gear guard (#3, Figure 1).
6. Remove the left dust cover (not shown).
• 7. Remove the two screws (#1, Figure 2) that hold the con-
tact plate to the frame. Remove the contact assembly
Md hold it to the front with a rubber band.
8. Remove the two pivot screws (#1, Figure 3).
9. Remove the front screw from the C 1 - C2 contact assemblY
(#1, Figure 4) and swing the assembly down out of the way
of the bearing plate.
10. Remove the cycle-clutch check pawl and spring (#1,
Figure 5).
11. Remove the three bearing-plate screws (#2, Figure 4).
12. Remove the bronze intermediate gear (#3, Figure 4).
13. Remove the Cl -C2 cams (#4, Figure 4) and the cycle
shaft gear (behind the C 1 - C2 cams).
14. Remove the bearing plate (#5, Figure 4) by prying it away
from the frame (front end fi rst) with a screwdri ver and
sliding it off the cycle shaft.
,15. Force the positive bail down with a screwdriver (#2,
Figure 5), making sure all the latches are under the bail.
Insert a bristol wrench through the lower left bearing
plate mounting hole (#2, Figure 4) over the top of the
bai I to hold it down.
Note: Do not remove the positive bail restoring spring.
16. Remove the cycle shaft, pushing the Negative 5 and
Rotate 2 links out of the way with a spring hook pusher
end. The pusher-restoring-bail arms will easily bend to
the left to allow removal.
17. Remove the shims from the old shaft and put them on the
new one: Be sure the flexible nylon shim is the first one
put
on.
Note: The number of shims may vary with the new shaft
to maintain .002" - . 004" end play.
* Not present on all printers.
FIGURE 1. CYCle Clutch and Cycle Shaft Removal
3-1
18. The following ad justments should be checked after the
cycle-shaft is replaced:
a. Idler Gears
b. Cycle Shaft End Play
c. Cycle-Clutch Spring
d. Cycle-Clutch Latch Bite
e. Damper Spring
f. Filter Shaft Timing
g. Print Shaft Timing
h. C 1 and C2 Contact Timing
FIGURE 2. Cycle Clutch an9 Cycle Shaft Removal
FIGURE 3. Cycle Clutch and Cycle Shaft Removal

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