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MAINTENANCE
CY72 01/08 Maintenance Section 5-7
© 2008 Alamo Group Inc.
MAINTENANCE
Blade Carrier Installation
Clean the splines on both the blade carrier and output shaft. Position carrier on the gearbox output shaft and
install special washer nut.
Tighten nut holding blade carrier to minimum 400 ft. pounds, strike the carrier near the hub several times with a
heavy hammer to seat the hub. Use a suitable spacer over the nut to prevent damage to the nut and threads.
Retighten the nut to 400 ft. pounds. Install cotter pin and spread.
IMPORTANT: Always recheck gearbox output shaft and blade carrier to be sure they are retaining nut torque
after a few hours operation.
Avoid personal injury. Do not work under cutter without support blocks to keep frame from
falling.
Blade Servicing
Inspect blades before each use to determine that they are properly installed and in good condition. Replace
any blade that is bent, excessively nicked, worn, or has any other damage. Small nicks can be ground out
when sharpening.
Blade Sharpening
IMPORTANT: When sharpening blades, grind each
blade the same amount to maintain balance. The
difference in blade weights should not exceed 1
ounce. Unbalanced blades will cause excessive
vibration which can damage gear box bearings.
Vibration may also cause structural cracks in cutter
housing.
Use only original equipment blades on this cutter. They are made of special heat-treated
alloy steel. Substitute blades may not meet specifications and may fail in a hazardous
manner that could cause injury.
Do Not heat, weld, or hard surface blades as this can alter material strength causing blades
to fail in a hazardous manner that could cause injury.
Always sharpen both blades at same time to maintain balance. Follow original sharpening pattern as shown in
Figure Mnt-0008. Always sharpen blades by grinding. DO NOT heat and pound out edge. Do not sharpen
blade to a razor edge, but leave a 1/16" blunt edge. Do not sharpen back side of blade.