Blades too soft. replace blades with hardened, High-quality, rhino blades from the, Manufacturer – Alamo GR60 User Manual
Page 123: Locknut worn out. replace locknut, Check joint angles and phasing, Slow down ground speed or raise, Mower, Ears have deformed. install thrust washer, Into cup and cross use slip clutch, Ground speed or raise mower
OPERATION
GR60/72 02/07
Operation Section 4-41
© 2007 Alamo Group Inc.
OPERA
T
ION
Problem
Possible Cause
Remedy
Blades Wear Fast
Cutting in sandy or rocky conditions
Increase cutting height.
Blades too soft.
Replace Blades with hardened,
high-quality, Rhino Blades from the
manufacturer.
Blade Bolts Working Loose
Bolts not tightened.
Tighten Bolts to 300 ft./lbs.
Bolt hole elongated or oversized.
Replace Blade Carrier.
Locknut worn out.
Replace Locknut.
Broken Cross or Cups
Load too high for joint.
Use protective device with joint.
Check joint angles and phasing.
Slow down ground speed or raise
Mower.
End Galling of Cross and Cups Speed too high.
Reduce speed to 540 RPM.
Ears have deformed.
Install thrust washer.
Needle Rollers Have Brinelled
Load too high for joint.
Check for small joint angles.
Into Cup and Cross
Use Slip Clutch.
Check joint angles and phasing.
Shaft or Tube Twisted
Over-loaded.
Replace part and then slow down
ground speed or raise Mower.
Use protective device.
(See Clutch Maintenance).
Tube Broken in Welded Seam
Over-loaded.
Replace part.
(See Clutch Maintenance).
Yoke Broken at Ear Tip
Over-loaded.
Replace part.
Gearbox Noisy
Improper backlash.
Refer to Maintenance Section.
Rough gears.
Run in or change Gears.
Worn Bearing.
Replace Bearing.