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Section 5: Maintenance and Lubrication
12/17/07
RCR1860 and RCR1872 Series Rotary Cutters 312-849M
Land Pride
Table of Contents
Maintenance
Proper servicing and adjustment is the key to the long life
of any farm implement. Careful and systematic
inspection can avoid costly down time, maintenance and
repairs.
After using your cutter for several hours, check all bolts
to be sure they are tight.
Replace any worn, damaged or illegible safety labels by
obtaining new labels from your Land Pride Dealer.
Service Cutter Blades
!
DANGER
Always disconnect main driveline from tractor PTO before
servicing underside of cutter deck. Cutter can be engaged if
tractor is started resulting in damage to the cutter, bodily injury
or death.
!
WARNING
Always secure cutter deck in the up position with solid supports
before servicing underside of 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 hydraulics is shut off.
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. Small nicks can be ground out
when sharpening.
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.
3. Inspect cutting blades. Make certain they are
properly installed and are in good working condition.
Replace any blade that is damaged, worn, bent, or
excessively nicked. Small nicks can be ground out
when sharpened.
4. To remove blades from the cutter, align blade bolts
with blade bolt access hole located 0n the deck See
Figure 5-1.
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
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 break down on the spindle hub
and create structural cracks in cutter housing.
balance. 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 after
sharpening with not more than 1 1/2 oz. difference.
Refer to Figure 5-1:
6. Carefully check cutting edges of blades in relation to
blade carrier rotation to ensure correct blade
placement. Blade rotation is counterclockwise with
cutting edge leading. Airfoil (lift) must be oriented
towards the top of the deck.
Counterclockwise Blade Rotation
Figure 5-1
Refer to Figure 5-2 on page 20:
7. Start by assembling blades without shim (#2). Insert
blade bolt (#1) through blade (#3), dish pan (#4) and
flat washer (#5). Temporary secure blade with a used
1 1/8"-12 nut. Draw nut up snug. Do not tighten.
8. Check blade deflection. If deflection is greater than
3/4", remove blade bolt and reassemble as before
except include shim (#2) in the assembly. Select
shim thickness based on deflection. The greater the
deflection, the thicker the shim.
21416
Blade Bolt
Access Hole
IMPORTANT: Examine blade bolts (#1) and
washers (#5) for excessive wear and replace if worn.
IMPORTANT: Locknuts can loose their ability to
lock properly once removed. Therefore, always use
a used blade nut or plain nut in steps 7 & 8 below
and then replace used nut with new locknut in
step Step 9.
Section 5: Maintenance and Lubrication