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Genesis LXP
®
© 2015 Genesis Attachments, LLC
CRACKER JAW SET MAINTENANCE
Blade Rotation
Rotate blades when the cutting edges are worn to a 1/8” (3mm) radius.
Recommended rotation intervals are approximately 40-80 hours, depending on the material being
processed. Thin materials may require shorter rotation intervals. Blades must be replaced when
all four edges are worn to 1/8” (3mm) radius.
The following chart may be copied and used to track blade rotation.
40-80 Hours
Date
Hour Meter
Performed By
Installed
Rotation 1
Rotation 2
Rotation 3
CUTTING EDGES
Blade Gap
After each blade rotation, shim lower blades to keep the gap within a range of .010” to .020”. Do
not shim the upper blades. Use only Genesis shim kits.
Slowly close jaws until blades begin to bypass. Stop the jaw and check the gap with a feeler gauge.
Cycle the jaws slowly and continue checking the gap at several points along the entire length of
the blades.
Note: The gap will be consistent along the entire length of the blades if they have been rotated and
shimmed correctly.
If blade gap exceeds the .020”, shim lower blades. Blades must be replaced when shims exceed
0.060”.
Shimming Procedure
Loosen blade bolts.
Install shims between blade and blade seat as needed to bring into tolerance.
Torque bolts to spec and recheck tolerances.
Do not use more than 0.060” of shims.
Blade Gap Measuring Procedure
