Challenge CMT-130, Service Manual

Page: 89 / 226

FEB 2017
CMT 130 Book Trimmer 4-5 4. Repair/Adjustment Procedures
14. Place 4 knife bolts into the 4 available holes
in the knife and use the T-handle wrench to
secure them as shown in Figure 4-7.
15. Turn the lifter handles counterclockwise and
remove the lifter from the machine.
16. Place 2 knife bolts into the holes from which
the knife lifter handles were removed. Use
the T-handle wrench to secure them.
Viewed through the inspection holes, the
blade should be inserted against the stops.
Once the knife has been installed, the cutting
depth must be adjusted (REP 4.3 Knife Depth
Adjustment).
CAUTION
The knives must be adjusted after every knife
change. Improper knife adjustment may cause
damage to the machine.
Knife Sharpening Amount
A total of 1/4" (6.4mm) of material may be re-
moved due to repeated sharpenings. Beyond
this, the machine will not cut fully through a
book.
The knife must not be sharpened to less than a
knife height of 2.50 in. (63.5 mm) as shown in
Figure 4-8.
WARNING
Knives can be very dangerous unless safety
precautions are observed and extreme care
is taken when handling knives. Keep han-
dling of unprotected knives to an absolute
minimum. Keep knives in scabbard when at
all possible. Warn people of any unprotected
knife.
Figure 4-8. Knife Height Range