Selectric Resources

 

TABULATION (RB/S) ADJUSTMENTS

 

1. Tab Rack Radially —

 

a. Position all the tab stops (except the final stop) to the rear of their slots to get .005”-.010” (0.13-0.25 mm) between the stops and the tab rack.

 

b. Latch out the tab lever. Rotate the tab rack within the tab set and clear bellcrank for .030”-.040” (0.76-1.02 mm) between the tab stops and the tab lever pawl.

 

2. Tab Lever Stop — Form the tab lever stop on the escapement bracket so the lower tab lever lug clears the escapement pawl by .010”-.015” (0.25-0.38 mm) at rest.

 

3. Tab Lever Pawl — Adjust the tab lever pawl adjusting plate so the tab lever pawl engages a set tab stop by .035”-.045” (0.89-1.14 mm) with the carrier at the left side of the tab rack and the tab lever latched out.

 

4.  Tab Rack Parallel — Adjust the tab rack mounting bracket front to rear so that the tab lever pawl engages a set tab stop by .035”-.045” (0.89-1.14 mm) with the carrier at the right side of the tab rack and the tab lever latched out.

 

5. Tab Latch Overlap — With the tab lever latched out, adjust the escapement pawl guide bracket front to rear so the left edge of the tab latch lug clears the bottom of the latching slot in the tab lever by .001”-.010” (0.03-0.25 mm).

 

6. Escapement Pawl Clearance — With the tab lever latched out, form the tab latch lug so the escapement pawl clears the escapement rack by .005”-.010” (0.13-0.25 mm).

 

7. Tab Keylever Link — Adjust the tab keylever link so that when the tab keylever is bottomed, the tab lever overthrows the tab latch by .005”-.010” (0.13-0.25mm).

 

8. Tab Torque Bar Link (Level 1) — Adjust the torque bar link so the tab torque bar rest position is vertical.

 

Tab Torque Bar Link (Level 2) — Disconnect the tab keylever link. Adjust the tab torque bar link so the torque bar arm clears the tab.

 

9. Tab Torque Bar Backup Lug — Form the tab torque bar backup lug for .001” (0.03 mm) clearance from the tab torque bar at the closest point.

 

10. Tab Trigger — Form the front lug on the tab trigger so it clears the tab torque bar by .001”-.005” (0.03-0.13mm).

 

11. Tab Keylever Down Stop — With the tab keylever bottomed, adjust the tab keylever down stop so there is .005”-.010” (0.13-0.25 mm) clearance between the tab latch lug and the rear surface of the tab lever latching notch.

 

Level 2 — With the tab keylever bottomed, adjust the tab keylever link to get .005”-.010” (0.13-0.25 mm) clearance between the tab latch lug and the rear surface of the tab lever latching notch.

 

12. Tab Rack Left-To-Right — Set the first tab stop and position the carrier at the far left (first escapement rack tooth). As the tab lever is moved to the rear, adjust the tab rack left to right so the tab lever pawl clears the set tab stop by .000”-.002” (0.00-0.05 mm). Dual pitch machines are to be adjusted in the 10 pitch mode.

 

13. Tab Interlock — Form the lug on the tab latch that extends down behind the escapement torque bar so that the escapement torque bar rotates the tab latch away from the tab lever by .005”-.025” (0.13-0.64 mm). Make this adjustment with the carrier return clutch latched.

 

The adjustment ensures that the carrier return and tab cannot both be latched out at the same time. If both were allowed to latch, the tab lever pawl would lock against a set tab stop during the carrier return operation.

 

14. Carrier Return/Tab Interlock — Form the lug of the interlock to get the following conditions:

 

Level 1 —

 

a. With the carrier return mechanism latched, the interlock should pull the carrier return latch keeper forward just enough to release the latch when the tab lever is fully depressed.

 

b. With the carrier return mechanism at rest, the tab keylever should not cause the carrier return keeper to move away from the latch when the keylever is fully depressed.

 

Level 2 — With the tab keybutton held down, form the horizontal arm part of the carrier return interlock to get .010”-.020” (0.25-0.51 mm) between the carrier return latch and keeper.

 

15. Tab Rack Vertical — Adjust the tab rack mounting bracket up or down to get .005”-.015” (0.13-0.38 mm) clearance between the top of a tab stop and the bottom of the clear finger of the tab set and clear bracket.

 

NOTE: Check to make sure the tab rack left to right and tab rack parallel adjustments are correct after making this adjustment.

 

16. Tab Set And Clear Bracket — Adjust the tab set and clear bracket for the following conditions:

 

a. Adjust the tab set and clear bracket front to rear so the clear finger and a cleared tab stop will have .001”-.010” (0.03-0.25 mm). Form the clear H finger up or down to get a .010”-.020” (0.25-0.51mm) clearance between the clear finger and the tab rack. Adjust left to right so that the set finger will reliably set and clear each tab set stop when a dual pitch machine is in the 12 pitch mode or when adjusting a 12 pitch RB/S machine. Adjust left to right so that the set finger will set and clear the two stops that are spaced close together at the same time when a dual pitch machine is in the 10 pitch mode, or when adjusting a 10 pitch RB/S machine.

 

b. With the tab rack rotated in the clear position, form the set finger so that it clears the upper lug of a tab stop by .005"-.015”(0.13-0.38 mm) and the tip clears the rack by .001”-.010” (0.03-0.25mm).

 

17. Tab Set Stop Lug — Form the set stop lug on the tab set and Clear arm bracket so the top of the tab lever pawl engages the top of a tab stop when set.

 

18. Tab Clear Lug — With the tab stops positioned .005”-.010” (0.13-0.25 mm) from the rear of their slots, form the clear stop lug of the tab set and clear arm bracket so the tab stops are .001”-.010” (0.03-0.25 mm) from the tab clear finger when the tab set and clear arm is against the lug. This ensures minimum noise during gang clear.

 

19. Tab Set And Clear Link — Adjust the tab set and clear link so the tab set and clear keybutton matches the angle of the keyboard.