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Prepare to remove tractor guide bars and tractor drive
shafts.
1. Remove the forms.
2. Remove the binary paper guides from the tractor
guide bars.
3. Remove the inner front cover.
4. Remove the upper and lower forms guide bars with
the jam bars attached.
5. Remove the jam contact mountings from the tractor
guide bars.
6. Remove the wires from the form stop contacts at the
terminal block.
7. Shift the T-casting to the left.
8. Remove the gear guard.
Separate vertical shaft of forms width vernier. Loosen
the set screws in the vertical coupling of the forms width
vernier. Move the vertical coupling up onto the upper shaft
and lock to the shaft.
Remove the bearing caps.
1. Loosen the screws that prevent bearing end shake (at
right).
2. Remove the two bearing holding screws (at right)
for each bearing cap.
3. Shift T-casting to the right.
4. Remove the two bearing cap holding screws (at left)
for each bearing cap.
5. Remove both bearing caps.
Remove the tractor guide bar and the tractor shaft.
1. Remove the two screws and the slide-retainer-plate
at the left end of one of the tractor guide bars.
2. Remove the two holding screws at the right end of
the same tractor guide bar.
3. Lift the tractors, the guide bar, and the shaft out and
to the left to clear the T-casting.
Repeat step 5 for other assembly.
Remove Individual Pin Feed
Prepare for removal.
1. Open the T-casting.
2. Remove the forms.
3. Open the tractor door.
Remove the tractor paper guides.
1. Remove the tractor paper guide farthest from the
hinge of the door.
2. Remove the tractor guide on the other side of the
pin feeds.
Align the pin-feed holding pins with the slot in the frame
spacer plate (the end nearest the drive shaft).
1. Turn the tractor shaft until one holding pin aligns
with the slot.
2. Use a similar pin to push the installed pin towards
the center of the machine.
3. Repeat step 2 for the second holding pin.
Remove the pin feed by lifting. Insert the new pin feed.
Replace the pin feed holding pins.
1. Insert the second pin.
2. Turn the tractor shaft until the first holding pin hole
is aligned with the slot.
3. Insert the first pin.
NOTE:
Pins are to be flush or slightly recessed.
Replace the tractor paper guides in reverse order. (See
Forms Tractor Adjustments.)
Forms Tractor Adjustments
Adjust the belt tension.
1. Maintain parallelism between the axes of the rotation
of the drive sprocket and of the movable sprocket.
2. Position the movable sprocket stud for a minimum
slack at the point of tightest engagement.
a. Insure that belt tension is not excessive.
b. Tighten the sprocket stud.
Position beveled ramps.
1. The point of the ramp must point in the direction
opposite to the belt motion.
2. Position the ramp for a clearance to the respective
sprocket hub of 0.002" to 0.007".
3. Clamp in position.
Position the tractor paper guides.
1. Align the edge of the paper guide nearest the door
pivot plate flush to the pivot plate.
2. Position the underneath side of the paper guide flush
against the edge of the spacer plate.
3. With the conditions in steps 1 and 2 established,
secure both paper guide and mounting block with their
front surfaces flush to the front edge of the spacer plate.
4. Position the lower edge of the adjacent paper guide
against the lower edge of the paper guide nearest the door
pivot, maintaining the upper edges parallel.
5. Fasten the adjacent paper guide to the tractor frame.
Position the tractor door for a clearance of paper guide
plates to the door runners of 0.048" to 0.056".
1. Loosen the pivot plate.
2. Screw the door stop in below the correct door setting.
3. Insert two sets of feeler gages with the correct setting.
4. Force the door against the feeler gages.
5. Tighten the pivot plate.
6. Set the door stop to hold the door at the correct
clearance.
Position the form stop switch to make when the form
stop lever is within 9 2"" of the front surface of the paper
guide.
Position Upper and Lower Tractor Drive Shafts
First, check the forms width vernier. Prepare to adjust the
drive shafts.
1. Position the left forms tractors in the corresponding
slots in the tractor guide bar.
2. Position the right forms tractors in the corresponding
holes in the face of the movable slides.
3. Place a form in the forms tractors.
Check the position of the upper drive shaft to the lower
tractor drive shaft. The form must fit in tractors with a
minimum slack in paper. Feed the forms manually and
check for no elongation of the pin feed holes (this may
occur under power).
If the condition just described is met, the adjustment is
complete. Replace any remaining parts in reverse order.
If necessary, adjust the upper tractor drive shaft in relation
to the lower tractor drive shaft.
1. Loosen the upper tractor shaft drive gear.
2. Manually rotate the shaft to remove slack.
3. Clamp the drive gear to the shaft.
Replace any remaining parts in reverse order.
Install Tractors
This procedure refers to both the upper and the lower
assembly. Place the tractor shaft and the guide bar in rela-
tive positions on a flat surface.
Install the tractors on the drive shaft.
1. Slide the drive shaft through the square drive hub
on the right tractor.
2. Turn the left tractor drive until the pins line up with
those on the right tractor and, at the same time, the drive
hub lines up with the drive shaft.
3. Slide the drive shaft through the square drive hub
on the left tractor.
Install the tractors on the guide bar. Slide the guide bar
through right and left tractors.
Replace Tractor Shafts and Guide Bars
Place the tractors, the guide bar, and the tractor shaft in
the machine.
1. Set the assembly in the machine.
2. Insert the screws in the slide-retainer plate and the
guide bar at the left and turn the screws in a few turns.
3. Insert the holding screws at the right end of the guide
bar and turn in until nearly snug.
Repeat this step for the other assembly.
Install the bearing caps.
1. Slide the bearing and bearing retainer ring in position.
2. Place the bearing cap in position.
3. Insert the two right bearing cap holding screws and
tighten until almost snug.
4. Insert the two left bearing cap holding screws and
tighten.
5. Snug up the bearing end screws.
6. Tighten the right bearing cap holding screws.
7. Tighten the bearing end screws.
Repeat this step for the other assembly.
Position the tractor guide bars.
1. Slide the tractors apart to extreme positions.
2. Position the tractor guide bars against the lip on the
printer casting at the left.
3. Shift the guide bars horizontally to vertically position
the left tractor pins on the upper guide bar within 0.002"
of the left tractor pins on the lower guide bar. Use a straight
edge laid along the tractor pins for determining vertical
alignment.
Connect the vertical shaft of the forms width vernier.
1. Loosen the set screws in the vertical coupling and
slide into engagement with the upper and lower shaft.
2. Clamp the coupling to both shafts.
Perform the following adjustments:
1. Adjust the forms width vernier.
2. Position the upper and lower tractor drive shafts.
Replace the remaining parts in reverse order.
Tractor Jam-Detection Device Adjustments
This applies to both upper and lower detention devices.
Check the jam-detection device.
1. The jam bail must rest against both the left and right
tractor doors.
2. The rear edge of the bail mounting brackets must be
flush to the rear side of the forms support bar.
3. When applied at operating edge of bail, the bail move-
ment must be free.
4. A force of 1
/2
pound (225 grams) must move bail away
from the tractor door.
5. The switch plunger must be 0.010" to 0.015" past
the toggle point when the bail is resting against the tractor
doors.
6. The switch plunger must be free of the bail when the
tractor doors are opened against the form guide support bar.
If these conditions in step 2 are met, no further adjust-
ment is necessary.
Adjust the jam-detection bail.
1. Loosen the bail mounting brackets.
2. Rest the bail against both form tractors.
3. Position the rear edge of the mounting bracket flush
to the rear side of forms guide support bar within 0.005".
4. Tighten the mounting bracket in position.
Adjust bail torsion spring.
1. Loosen the lock nut on the spring stud.
2. Turn the screw and tighten the lock nut.
3. Check for a 1
/2
pound force to move the bail away
from the tractors.
4. Re-adjust as necessary.
Position the bail switch.
1. Loosen the holding screws.
2. Insure that the jam bar is against the tractor cover.
3. Locate the switch so that the switch plunger is moved
0.010" to 0.015" past the toggle point.
4. Tighten the holding screws.
Forms Stacker Assembly Adjustment
1. Stacker tension springs are to be adjusted to feed rolls
to a point of tangency without compressing spring. (Too
much tension will tear the paper).
2. Bevel gears on countershaft assembly, and friction
drive shaft assembly are to be positioned for .002" to .004"
wink and alignment of the crown points of each gear; i.e.,
full tooth engagement.
3. If the teeth do not engage correctly, both shafts will
have to be repositioned. Check again for .002" to .004"
wink after obtaining the correct tooth engagement.
Base Adjustments
Grounding of Forms Carts
Adjust the forms cart guides so that their contact springs
press firmly against the sides of both the front and rear
carts when they are in position.
Level Left Shock Mount
Level the left shock-mount support casting so that it is
parallel to the printer casting within 1
/8"
in the:
1. left to the right plane.
2. front to the back plane.
Adjust the two front and back jackscrews to obtain this.
Remove Translator Frame (Figure 2)
Prepare to remove the translator frame.
1. Remove the forms.
2. Remove the top paper guide.
3. Remove the paper guide at the bottom of the trans-
lator frame.
4. Remove the front paper guide ( below the translator
frame) .
5. Remove the ground wire to the translator frame.
6. Lower the translator frame to the lowest position
with the vertical print alignment knob.
7. Remove the bumper stop stud,
a. from the left end of the translator frame.
b. from the right end of the translator frame.
Remove the tractor shafts and the tractor guide bars.
Remove the T-casting. Remove the hammer unit. Free the
translator frame.
12
REMOVALS AND ADJUSTMENTS
13
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