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BLADE SERVICING
Blade and Blade Carriers
Inspect blades daily. Blades should be free of deep chips, cracks or abnormal bends.
Blades should always be replaced in pairs. Blades of different weights may cause serious
imbalance which can result in damage to the gearbox. Damage caused by unbalanced
blades can make the machine dangerous to operate, increasing the risk of a broken
gearbox lower shaft. Never weld or modify blades. Welding and other modifications such
as straightening the blade after it has been bent can severely reduce the strength of the
blade, increasing the likelihood that a piece breaks and can be thrown from the machine.
DO NOT SHARPEN BLADES. Sharpening blades can reduce the strength of the blade,
increasing the likelihood that a piece breaks and can be thrown from the machine. Should
the blades become dull, replace them. Blades should always be replaced in pairs.
AVOID PERSONAL INJURY. Blade and/or blade carrier removal should be done only with
the tractor engine shut off, key removed, in neutral, parking brake on, PTO disengaged,
PTO input shaft removed, and the cutter blocked in the raised position.Mnt-R-0003
Blade Installation
When installing blades, use new blade bolts and blade nuts. Always replace blades in matched sets. A 1-5/8"
socket can be used to torque blade bolts to 600 foot pounds dry assembly. You will need at least 3 feet of
leverage to be able to do this. Check blade bolt torque after the first 10 hours of operation.
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 be dangerous.
Retighten blade bolts daily. Access holes are provided on the deck of the cutter to facilitate this.After installing
new blades or blade bolts ensure that blades are free swinging and that there is 1" to 1-1/2" (25-38 mm)of
free up and down motion at the tip of the blade. Mnt-R-0004
Blade Carrier Removal
Remove cotter pin and loosen slotted nut on gearbox shaft. Loosen but do not remove the nut until the blade
carrier is loosened. Use a suitable two-jaw gear puller to pull carrier off tapered gearbox shaft. If gear puller is
not available use a long bar inserted through the bolt access hole, striking the long bar with a sledge hammer.
Rotate blade carrier 180° and repeat process until the blade carrier is loosened. Mnt-R-0005
FX-742 07/16
© 2016 Alamo Group Inc.
MAINTENANCE
Maintenance Section 5-10
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