Alamo Exten-A-Kut II - Manual (Page 137)

MAINTENANCE
EK II 03/09 Maintenance Section 4-5
©2009 Alamo Group Inc.
MAINTENANCE
BLADE REMOVAL
To remove blades for sharpening or replacement, remove the cover plate on deck of mower near Hyd
Motor. 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. Tighten lock nut to 350
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 mower blocked in the raised position.
BLADE CARRIER REMOVAL
Remove cotter pin and loosen slotted nut on spindle 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 spindle 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.
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 450 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 450 ft. pounds. Install cotter pin and spread.
IMPORTANT! Always recheck spindle output shaft slotted blade carrier retaining nut torque after a few
hours operation.
Avoid personal injury. Do not work under mower without support blocks to keep frame
from falling.