Selectric Resources

 

CARRIER RETURN/BACKSPACE CABLE DRUM ASSEMBLY REMOVAL (RB/S)

 

1. Position the carrier at the far right.

2. Remove the switch and swing it out of the way.

3. Carefully remove the mainspring.

4. Remove the backspace bellcrank retainer.

5. Remove the pin and “C” clip connecting the driver links to the driver.

6. Remove the index interlock link and the left-hand index interlock shaft clip. Slide the index interlock shaft toward the right.

7. Remove the index multiplying lever stop and switch bracket screws.

8. Remove the mainspring hub.

9. Remove the two screws that mount the paper feed support to its bracket.

10. Disconnect the backspace bellcrank spring.

11. Remove the mainspring backplate screws and remove the paper feed support bracket.

12. Slide the mainspring backplate from the escapement shaft, leaving the backspace bellcrank in its position in front of the ratchet.

13. Remove the cable tension spring, arm and spacer.

14. Remove the CR/BS cable drum assembly and disengage the cable.

15. When installing a new drum assembly, engage the cable, align it properly and install the cable tension spacer, arm and spring. This procedure will hold the cables in place.

16. Reinstall the remaining parts in reverse order.

17. The following adjustments should be checked:

 

a. Paper feed support

b. Switch bracket

c. Mainspring hub

d. Escapement shaft collar

e. Transport cable tension

f. Backspace motion

g. Backspace latch height

h. Index interlock shaft

i. Index interlock paddle

j. Index multiplying lever stop