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MAINTENANCE
TW144 01/11
Maintenance Section 5-12
©2011 Alamo Group
MAINTENANCE
BLADE SHARPENING
Always sharpen both blades at same time to maintain balance. Follow original sharpening pattern as shown in
Mnt-R-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.
Avoid personal injury. Always block the cutter up to prevent if from falling when the blades
and/or carrier are being serviced.
Do not heat or weld on hard surface blades as this can alter material strength causing
blades to fail in a hazardous manner that could cause injury.
BLADE REMOVAL
To remove blades for sharpening or replacement, remove the cover plate (see
Mnt-R-0168
) on deck of cutter
near gear box. Remove lock nut from blade bolt.
NOTE:
Inspect lock nut after removal and replace if threads
are damaged.
Always replace nut when replacing blade bolt. When installing blades be sure and check blade
bolt pivot diameter for wear. Replace bolt if worn more than 1/4 inch at any point.See
Mnt-R-0014.
Install blade
bolts with partially worn side of bolt either toward or away from center. Tighten lock nut to 250 ft. lbs.
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, and PTO disengaged and
the cutter blocked in the raised position.
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 2 jaw gear puller to pull carrier off tapered gearbox shaft. If gear puller is not
available use long bar inserted through blade bolt access hole with end against rotor bar. Strike opposite end of
bar with sledge hammer. Rotate blade carrier 180 degrees and repeat process.
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