Land Pride RC5020 Series, Operator'S Manual, Page: 49 / 70

Section 5: Maintenance & Lubrication
Table of Contents
RC(M)5020 Series 2 (S/N ) Rotary Cutter 334-437M 11/13/18
45
Shredder Kit Blades
DANGER
!
To avoid serious injury or death:
•
Always disconnect driveline from the tractor before
servicing the drivetrain and components powered by the
drivetrain. A person can become entangled in the drivetrain
if the tractor is started and the power take-off is engaged.
•
Always secure equipment with solid, non-concrete supports
before working under it. Never go under equipment
supported by concrete blocks or hydraulics. Concrete can
break, hydraulic lines can burst, and/or hydraulic controls
can be actuated even when power to hydraulics is off.
WARNING
!
To avoid serious injury or death:
• Do not operate cutter with blades that are out-of-balance,
bent, excessively worn, excessively nicked, or with blade
bolts that are excessively worn. Such blades can break loose
at high speeds.
• Do not attempt to straighten a bent blade or weld on a
blade. Do not attempt to modify a blade such as hard
surfacing, heat treating, cold treating, or by any other
method. Always replace blades with new Land Pride blades
to assure safety.
•
Wait for blades to come to a complete stop before accessing
blade bolts through blade bolt access hole.
•
Wear eye protection and gloves while inspecting, removing,
sharpening, and replacing a blade.
Always inspect cutting blades before each use. Make
certain they are properly installed and 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.
Refer to Figure 5-8 on page 44 when ordering Land Pride
replacement blade components.
Remove cutting blades and sharpen or replace as
follows:
1. Secure cutter deck in the up position with solid non-
concrete supports before servicing underside of
cutter.
2. Shut tractor down properly before dismounting. Refer
to “Tractor Shutdown Procedure” on page 14.
3. Disconnect main driveline from the tractor.
Refer to Figure 5-9:
4. Unscrew locknut (#1) to remove blade bushings (#2),
flat washers (#3) and blades (#5 & #6).
IMPORTANT: Cutting 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 the cutter housing.
Shredder Kit Blade Assembly
Figure 5-9
5. 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" (2 mm) 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. Blades should weigh the same with not more than
1 1/2 oz (.04 kg). difference. Unbalanced blades
will cause excessive vibration which can damage
gearbox bearings and create structural cracks.
70857
Shredder Kit Blade Parts
# Part No. Part Description
1 803-168C HEX LOCK NUT 1-8 PLT
2 318-309D BLADE BUSHING
3 312-082D BLADE SPACER 18 GA
4 802-680C BOLT 1-8 x 4 1/2 PLT GR8
5 820-169C CUTTER BLADE (center & left wing)
5 820-170C CUTTER BLADE (right wing)
6 820-377C CUTTER BLADE (top blade)