Baumfolder Rebuilding a 200 – 700 series folder - Manual (Page 4)

PREPARATION AND DISASSEMBLY Continued….
16. Continue by repeating step 15 on the # 2,3,4,and 5 rollers.
17. Remove the main drive roll sleeve on the operator side of the folder. Slide the main drive
roller toward you through the opening in the side frame.
PREPARATION TO INSTALL NEW ROLLERS
.
1.
Mark 2 folders have cherry wood bushings, but the 700 and 200 series folders have
brass bushings. They are installed and reamed the same so we will not note type of
bushing in our future remarks. Rebuilding a Mark 2 is similar so by using good
mechanical judgment you can use this instruction.
2.
The main drive roll sleeve has two bushings, one pressed in from each side with a space
between them. Press both bushings out. Then press in one new bushing in from the
flanged side of the main drive roll sleeve until it is flush with the sleeve. Then Press in
the second new bushing in on the small end of the sleeve leaving the bushing extended
.015 out of the main drive roll sleeve This allows the gear or collar to run against the
bushing instead of the metal main drive roll sleeve. Hand ream the bushing with a
standard reamer the size of the main drive roll journal, usually 7/8 of inch. Normally you
do not ream an oilite bushing, but the folder will be oiled and does not depend on the oil
in the bushing so we do ream the bushing to fit the roll journal.
3.
Repeat step 2 on the opposite main drive roll sleeve. Insert the right and left main drive
roll sleeve back into the folder in reverse order that you removed them except that you
leave the main drive roll out for now. Check the location of the oil holes in the main drive
roll sleeves to insure they are in the correct location. If the sleeves are reversed, the oil
holes will be in the wrong position.
4. Slide a lining bar the diameter of the main drive roll shaft, usually 7/8
of an inch. Turn the lining bar and at the same time tighten one bolt at
a time in the main drive roll sleeve. If the lining bar is tight to turn,
loosen the last bolt you tightened and go to the next bolt. Where the
bolts are loose, add a shim between the sleeve and the folder frame.
Try tightening the bolt again and continuing until the shaft turns free
with all the bolts tightened. There should not be very many shims in
either sleeve. Tape the shim to the frame so it stays in place when
you remove the main drive roll sleeve. Insert the lining bar through
the left main drive roll sleeve. Put the coupling and reamer the size of the roller journal
(shaft), and ream the main drive roll sleeve on the right.
Repeat the procedure to ream the main drive roll sleeve
on the left side.
(continued)
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