Tennsmith LM1010-2x, Maintenance Manual, Page: 11 / 41

10
REPLACING/ROTATING BLADES
The blades on the LM Series shears are four edged blades constructed of high carbon,
high chromium tool steel. Top and bottom blades are interchangeable. Upon utilizing all
four edges of you blades, you may return the blades to the factory for re-sharpening or to
a qualified blade re-sharpener, such as a blade manufacturer.
To remove and reposition the blades, the procedure is as follows:
1.
DANGER:
disconnect the main electrical power source to
the shear.
2. Removal of the hold down assembly (69)
A.
DANGER
: Never attempt to remove the hold down
assembly without inserting and bottoming out the hold
down compression bolts (1/2” x 6” bolts shipped with the
machine) which are required to contain the spring
pressure of the hold down pads while the assembly is
removed from the shear.
Remove the top sheet metal cover
from the top of the hold down, and insert the compression bolts inside
the hole mounts on top of the hold down until each bolt bottoms out.
B. After bottoming out the compression bolts, remove the four hex head
bolts (81) which attach the hold down to the side panels on each end.
C. Use a sling and fork lift to remove the hold down after pulling the
assembly free of the front gib screw space collars located on the side
frames of the shear.
3. Removal of the top blade.
CAUTION:
Use gloves when handling
the blade to protect your hands.
Place a wood block wedge between
the upper and lower blades. Loosen the top blade bolts starting at the ends of
the blade working toward the center. Rotate the blade to a new cutting edge
and reversing the procedure, reinsert and snug the bolts working from the
center out to each end.
4. With all bolts in place, securely torque the bolts while insuring that the blade
is properly seated in the machined blade slot of the cutter head by using either
a brass or wood pry bar.
5. Repeat the above procedures similarly to reposition the bottom blade.
6.
Use the procedures outlined in the BLADE CLEARANCE section of this
manual to reset the proper baled gap.
CAUTION
:
Upon repositioning
the shear blades, it is imperative that the bottom blade be
adjusted well clear of the top blade before attempting to jog
the cutter head down to make the blade clearance adjustment.