Rhinotek RHINO FL20 - Manual (Page 139)

Maintenance Section 5-9
MAINTENANCE
FL20MFL14M 10/03
MAINTENANCE
© 2004 Alamo Group Inc.
BLADE REMOVAL
To remove blades for sharpening or replacement, remove the cover plate on deck of cutter near each gear
box. Remove locknut from blade bolt - note: These are Left-Hand Threads. Inspect lock nut after removal
and replace if threads are damaged. Always replace nut when replacing blade bolt. When installing blades,
be sure to check blade bolt pivot diameter for wear. Replace bolt if worn more than 1/4" at any point. Install
blade bolts with worn side of bolt away from the center of the blade carrier. Tighten lock nut to 300 ft. lbs.
WARNING 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, and
the cutter blocked in the raised position.
BLADE CARRIER REMOVAL
Remove cotter pin and loosen slotted nut on gear box 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 gear box 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 taper and keyway on both the blade carrier and output shaft. Position carrier on the gear box
output shaft and install flat washer and 1" hex nut. Tighten the nut holding the blade carrier to minimum 450
ft. pounds. Strike the carrier on 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
and spread cotter pin.
NOTE: After a few hours of operation always recheck blade carrier retaining nut torque.
WARNING Avoid personal injury. Do not work under cutter without support blocks to keep frame from
falling.
NOTE: Replace Blades in pairs after no more than 1/2" notch
wear!
1/2" MAXIMUM
Original Blade Edge
FIGURE 12. Excessive Blade Wear