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Figure 4. 6-8 Line Drive
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6
a. Place a straight edge along the pin feeds to check
for alignment.
b. Shift the tractor guide bars to align the pin feeds
within 0.005". There are two screws in each end of the
bar.
c. Keep the left horizontal surface of guide bar
against the corresponding horizontal lip of the printer
casting.
3. Adjust the right tractor pin feeds.
a. Orient the horizontal adjusting screws and vertical
drive collar to align the right pin feeds within 0.005"
horizontally (in a vertical line) .
b. Place a straight edge along the pin feeds to check
for alignment.
c. It may be necessary to reposition the horizontal
adjusting screws in relation to the collars and gears to
obtain adjustment.
d. Position the friction nuts and collars for a maxi-
mum end play of 0.002".
4. The forms width vernier must operate with light
finger force.
5. After this adjustment has been made, adjust the verti-
cal position of the right ends of the upper and lower tractor
guide bars for free movement of tractor assemblies.
Manual Clutch and Line
-
Selection Lever (Figure 4)
1. Prepare for adjustment.
a. Move the translator frame to the left.
b. Remove the front inner cover.
c. Remove the manual clutch knob.
d. Remove the manual advance knob.
e. Remove the rear 1403 cover.
2. Check the adjustment of the manual clutch and the
line-selection lever assembly.
a. Check for clearance:
(1) For a minimum end play of the detent arms
on the shaft.
(2) For a minimum of 0.025" between the detent
and the detent wheel when the detent is inoperative.
(3) Between the tines of the shift fork and the
slide gear hub.
b. Check for alignment:
(1) of the detent arms to the slots in the camming
plate.
(2) of the detent wheels to the detent arms.
c. Check for correct operation that:
(1) the clutch shifts from 6- to 8-line drive and
vice versa.
(2) the spring causes correct operation of the de-
tent arms and wheels (there should be a force of
41 /z to 61 /2 pounds on the detent arm).
(3) the detent arm roller seats fully in the detent
wheel when the detent is operative.
3. If the conditions in step 2 are met, no further adjust-
ment is necessary. Proceed to step 12.
4. Further prepare to adjust the manual clutch and line-
selection lever assembly.
a. Unhook the detent arm springs.
b. Loosen both the detent wheels.
c. Slide the right detent wheel to the right.
d. Loosen the detent arm collars.
e. Slide the detent arms to the left.
f. Loosen the camming plate on the shift fork so that
the plate is just free to slide.
g. Loosen the set screw that holds the camming plate
stop rod.
h. Wedge the paper between the shift fork tines and
hub of shift gear to center around shift gear hub.
5. Position the shift fork on the shift rack for gear mesh
and clearance.
a. Detent the shift rack in 6-line drive at the right.
b. Position the shift fork on the shift rack so that the
slide gear meshes with the 6-line driving and driven
gears and has clearance to the casting.
c. Rotate the shift fork around the shift rack to center
the shift fork around the shift gear hub.
d. Clamp the shift fork to the shift rack.
6. Align the detent arms to the camming plate.
a. Set the slide gear to 6-line drive position.
b. Align the detent arms with the left two slots in the
camming plate.
c. Tighten the collars to hold the detent arms in
position.
7. Adjust for a clearance between the detent wheels and
the detent arms of 0.025" with the manual clutch in either
6- or 8-line drive.
a. Turn the 6- and 8-line gear idler to a position
where it does not move when the slide gear is shifted
from the 6-line drive to the 8-line drive or, vice versa.
b. Set the slide gear to the 8-line neutral position.
c. Slide the right detent wheel opposite the right de-
tent arm.
d. Use the rubber band to hold the right arm against
detent.
e. Adjust the camming plate roller stop to provide a
0.025" clearance between the detent arm and tooth of
the right detent wheel.
f. Tighten the set screw to hold the camming plate
roller stop rod.
g. Rehook the springs on the detent arms.
h. Clamp the camming plate to the shift fork.
8. Align the detent wheels to the detent arms.
a. Set the manual clutch to 8-line neutral.
b. Align the left detent wheel to the left detent arm.
c. Clamp the left detent wheel to the tractor shaft.
d. Set the manual clutch to 6-line neutral.
e. Align the right detent wheel to the right detent
arm.
f. Clamp the right detent wheel to the tractor shaft.
g. Check the operation of the manual clutch for four
manually operated spaces.
h. Re-adjust as necessary.
9. Set the spring tension to provide 41/2 to 61 /z pounds
force on the detent arm when it is engaged in the detent
wheel.
10. Remove the paper from between the shift fork tines
and the shift gear hub.
11. Position clutch interlock switch.
a. Switch to make when the plunger is within 3/2 of
bottoming in the grooves of the shift rod.
b. Position the switch to obtain this adjustment.
12. Replace the remaining parts in reverse order.
Forms Positioning
Tractor Shafts and Tractor Guide Bars
This procedure is given for the removal of the upper and
lower tractors, the tractor guide bars, and the drive shafts.
If only one set is to be removed, do only so much of each
step that will allow the desired set to be removed.
10
REMOVALS AND ADJUSTMENTS
11
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