Baumfolder Rebuilding a small, older folder User Manual
Page 3
Section 1 - How to Rebuild a Baumfolder..... continued
17.
Remove the three flat head bolts on the main drive roll sleeve on the operator side of the
folder. Remove the main drive roll sleeve, and slide the main drive roll out through the
opening in the frame.
18.
Remove the left hand main drive roll sleeve.
(Caution) mark the main drive roll sleeves so they are
not put on wrong side when reassembling unit. The oil
hole will be in the wrong location.
PREPARATION TO INSTALL NEW ROLLERS
19.
The main drive roll sleeves have two brass bushings, one pressed in from each side and a
space between the bushings. Press both bushings out. Then press in the new bushing in
from the flange side of the main drive roll sleeve until it is flush with the sleeve. Then
press the second one in on the small end of the main drive roll sleeve, (end toward the
body of the roll,) leaving the bushing extend .015 out of the main drive roll sleeve. This
allows the collar or the roll gear to run against the bushing instead of the metal in the
main drive roll sleeve.
20.
Hand ream the bushing with a standard 7/8 of inch, or the diameter of the main drive roll
journal (shaft). Normally you do not ream an oilite bushing, but the folder will be oiled
and does not depend on the oil in the bushing. Repeat step 19 and 20 on the opposite
main drive roll sleeve.
21.
Insert both right and left main drive roll sleeves and tighten the three flat head bolts in
both without the main drive roll. check the location of the oil hole in the main drive
sleeve to insure correct position of the sleeves.
22.
Insert the proper diameter lining bar through the main drive roll sleeve and to about one
quarter of an inch from the opposite main drive roll sleeve. With no pressure, move the
lining bar up and down watching to see if it centers with the bushing in the main drive
roll sleeve. Then move the lining bar from side to side. If the lining bar is low in
relationship to the bushing in the main drive sleeve, put a shim at the top of the main
drive roll sleeve between the flange and the frame, leaving the shim at least one inch past
the flange. This would allow you to tape the shim to the frame so when you remove the
main drive roll sleeve to install the main drive roller, you would not loose the alignment.
Go from one side to the other until the lining bar turns free and with as few shims as
possible.
23.
Now add the reamer to the end of the lining bar and ream from left to right then right to
left. Remove the main drive roll sleeve and install the new main drive roll. When
installing the roll gear, note one side of the i.d. of the gear has a bevel. The bevel should
go toward the body of the roller. Compare the main drive roll with the roll you removed
to be sure the flats on the journal is in the correct location. The main drive roll should
have a gear on one end and a collar on the other. On most eight and sixteen page units, it
will have a roll gear on one end and the crosscarrier drive gear on the other.
24.
Replace the main drive roll sleeve and just smug up the three flat head bolts. Turn the roll
with your fingers and tighten the flat head bolts one at a time. The roll should turn easy
Section 1 - Page 3