IBM Selectric - Carrier Shoe Removal; Operational Interposer Bracket Removal; Operational Shaft Removal

OPERATIONAL SHAFT REMOVAL
1. Complete the Shift-(am Removal.
2. Remove the two I ugs and two screws from the bearing
mounting plate (#1, Figure 50) and slide the plate off.
3. Disconnect escapement I ink.
4. Work the operational shaft to the right until it clears the
cycle clutch pulley hub, then lift shaft out the top.
5. The following adjustments should be checked after the
operational shaft is replaced.
a. All Shift Mechanism Adjustments
b. Shift Magnet Assembly
c. Upper Case TYP,ehead Homing
d. Gear Mesh
* Screw is hidden behind SHIFT ARM
Figure 50. Operational Shaft Removal
OPERATIONAL INTERPOSER BRACKET REMOVAL
1. Complete the Shift-(am Removal.
2. Complete the Operational-Magnet Removal.
3. Complete the Operational-Shaft Removal.
4. Complete the Operational-Latch-Bracket Removal.
5. Remove the six (two shown) mounting screws (#1, Figure
51).
6. Remove the C5 Auxiliary Cam Follower.
7. Remove the key-lever pawl guides from the operational-
interposer bracket (not shown).
8. Work bracket assembly out through rear of machine.
9. The following ad justments should be checked after the
operationa I-interposer-bracket assembly is replaced.
a. All Shift Mechanism Adjustm'ents
b. Shift Magnet Assembly
c. Upper Case Typehead Homing
d. Gear Mesh
e.
f.
g.
h.
i.
j.
k.
Operational Latch Pivot Pin Eccentric
Escapement Trigger Guide
Mainspring Tension
Keylever Pawl to Interposer C I€!arance
Operational Latch Height
Backspace Rack
Pawl Clearance
I.
m.
n.
Clutch Latch Overthrow
Carrier Return Actuating Arm
Multiplying Control Lever
Figure 51. Operational Interposer Bracket Removal
CARRIER SHOE REMOVAL
1. Remove the two card-holder screws (#1, Figure 52).
2. Remove the two escapement-bracket screws (#2, Figure
52) .
3. Work the carrier out from under the escapement bracket
to the ri ght •
4.
5.
3-15
Figure 52. Carrier Shoe Removal
Remove
the nut from the carrier-shoe stud and remove the
shoe (#1, Figure 53).
The following adjustments should be checked after tht,
carrier-shoe is replaced.
a. Carrier Shoe
b. Escapement Bracket