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MAINTENANCE
TW120 01/11 Maintenance Section 5-13
©2011 Alamo Group
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, and nut.
Tighten nut holding blade carrier to minimum 600 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 600 ft. pounds. Install cotter pin and spread.
Operating the mower with a loose blade pan or holder can damage the taper connection on
the gearbox output shaft. To ensure proper seating between the blade holder and output
shaft, check and tighten the retaining nut after the first day of operation. Recheck the blade
carrier attachment each morning before operating. Grasp the carrier firmly with both hands
and try to push and pull the carrier with one hand while pulling and pushing with the other
hand to try to rock or oscillate the blade carrier. If the carrier is loose, retighten the retaining
nut before operating the mower.
Always recheck gearbox output shaft slotted blade carrier 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 REMOVAL
To remove blades for sharpening or replacement, remove the cover plate 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. Install blade bolts
with partially worn side of bolt either toward or away
from center. Tighten locknut to 600 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.