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MAINTENANCE
CY72 01/08 Maintenance Section 5-6
© 2008 Alamo Group Inc.
MAINTENANCE
Seasonal Torque Limiter Maintenance (CY72)
It is important that the Torque Limiter slips when an
obstacle or load heavier than the setting is
encountered. Before using the cutter each season,
use the following procedure to make sure the
torque limiter will slip and give the overload
protection required.
1. Loosen Bolts (#8) until gap between
adjusting nut (#7) and guide ring is
approximately 1/16".
2. Attach machine to tractor, set engine at
approximately half throttle and quickly
engage PTO. This procedure will break
Torque Limiter facings loose and allow the
proper torque to be maintained.
3. Return the bolts to their original position as
described in (b) above.
NOTE: If machine sits outside longer than 30 days
and is exposed to rain and humid air, the Torque
Limiter should be removed from machine and
stored in a dry area. Torque Limiter facings will
soak up moisture and cause the metal plates to rust
badly. When this occurs, the break-away torque
increases greatly and damage to gearbox, driveline,
or tractor PTO can occur.
Blade/Blade Carrier Service
To remove blades for sharpening or replacement, remove the cover plate on deck of mower near gearbox.
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 lock nut to 300 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.