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Section 5: Maintenance & Lubrication
RC5020 (540 RPM) and RCM5020 (1000 RPM) Rotary Cutters 318-474M 2/02/09
Land Pride
Table of Contents
General Maintenance Information
Proper servicing and adjustment is the key to the long life
of any implement. With careful inspection and routine
maintenance, you can avoid costly down time and repair.
Check all bolts after using the unit for several hours to be
sure they are tight. Replace any worn, damaged or
illegible safety labels by obtaining new labels from your
Land Pride Dealer.
Tractor Maintenance
One of the most important things you can do to prevent
hydraulic system problems is ensure that your tractor's
reservoir remains free of dirt and contamination.
Use a clean cloth to wipe hose ends before attaching
them to your tractor. Replace your tractor’s hydraulic
filter element at the prescribed intervals. These simple
maintenances will go a long way to prevent occurrence of
control valve and hydraulic cylinder problems.
Cutter Blade Maintenance
!
DANGER!
Always disconnect main driveline from tractor PTO before
servicing the underside of the cutter deck. Cutter can be
engaged if tractor is started resulting in damage to the cutter,
bodily injury and/or death.
!
WARNING!
Always secure cutter deck in the up position with solid supports
before servicing the underside of the cutter. Never work under
equipment supported by hydraulics. Hydraulics can drop
equipment if controls are actuated or if hydraulic lines burst.
Either situation can drop the cutter instantly even when power
to the hydraulics is shut off.
!
WARNING!
Refer to Figure 5-1. Keep blade bolt access hole “A” covered at
all times except when servicing cutter blades (#3). Make sure
the main driveline is disconnected from the tractor before
removing access cover (#7).
IMPORTANT: Replace cutting blades with genuine
Land Pride blades only. Blades must be replaced in
mating pairs. Not replacing both blades will result in
an out-of-balance condition that will contribute to
premature bearing breakdown on the spindle hub
and create structural cracks in cutter housing.
Always inspect cutting blades before each use. Make
certain they are properly installed and are in good
working condition. Replace any blade that is damaged,
worn, bent, or excessively nicked. Never try to straighten
a bent blade! Small nicks can be ground out when
sharpening.
Remove cutting blades and sharpen or replace as follows:
1. Place tractor gear selector in park and/or set brakes,
shut engine off and remove ignition key.
2. Disconnect main driveline from tractor PTO and
secure cutter deck in the up position with solid
supports before servicing underside of cutter.
Cutter Blade Assembly
Figure 5-1
Refer to Figure 5-1:
3. Remove wing nuts (#12), lock washers (#11), flat
washer (#10)and access cover (#7). Rotate blade
bolt (#1) until in alignment with access hole (A).
4. Unscrew locknut (#6) to remove cutting blade (#3).
Blade bolt (#1) is keyed and will not turn freely.
5. Both blades should be sharpened at the same angle
as the original cutting edge and must be replaced or
re-ground at the same time to maintain proper
balance in the cutting unit. The following precautions
should be taken when sharpening blades:
a. Do not remove more material than necessary.
b. Do not heat and pound out a cutting edge.
c. Do not grind blades to a razor edge. Leave a blunt
cutting edge approximately 1/16” thick.
d. Always grind cutting edge so end of blade remains
square to cutting edge and not rounded.
e. Do not sharpen back side of blade.
f. Both blades should weigh the same with not more
than 1 1/2 oz. difference. Unbalanced blades will
cause excessive vibration which can damage
gearbox bearings and create structural cracks.
Section 5: Maintenance & Lubrication