Alamo GR72, GR60 manual Operation

OPERATION

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.

GR60/72 02/07 Operation Section 4-41

© 2007 Alamo Group Inc.

OPERATION