Alamo 00785503C User Manual

RX60/72/84   03/09

Operation Section 4-47

© 2009 Alamo Group Inc.

Excessive Vibration

Check Gearbox Bolts

Tighten if loose.

Check for loose nuts on 

TIghten if loose.

blade holder and blades.
Check for bent output shaft.

Replace shaft if bent.

If shaft is bent, oil will
normally leak from bottom
seal.
Check to see if blades are

Free blades so they swing.

free swinging.
Check for even wear on 

Weigh Blades. Weight should be within

each blade tip. Were both 

1 oz. Always replace both blades.

blades changed at the same
time?
Blade Broken.

Replace blades, in set.

Blade Carrier Bent.

Replace carrier.

Blade hub not properly

Remove hub, check tapered spline

seated on shaft.

clean and replace.

New blade or bolts matched 

Replace blades or bolts in sets.

with worn blade or bolts.
Drivelines not phased correctly.

Replace driveline.

Implement & tractor yokes must 
be in line.

Not Cutting Clean

Blades dull.

Sharpen or replace Blades.

Carrier RPM too low.

Use correct PTO speed and check for
correct gearbox ratio.

Cutter not level.

See Cutting Height Adjustment.

Tractor tires mashing down grass.

Reverse direction of cutting and drive
with right tractor tire out of cutter 
overlap area. Conditions too wet to cut

Ground speed too fast.

Reduce ground speed by shifting to a
lower gear.

Blades locked back.

Free blades.

Blades riding up due to blade bolt

Replace blade bolts.

wear or loose bolts.
Cutting height too high.

Lower cut height as much as possible.

Blades Wear Fast

Cutting in sandy or rocky conditions

Increase cutting height.