Land Pride Rotary Cutters RCR1884 - Manual (Page 27)

25
Section 5: Maintenance and Lubrication
2/03/12 RCR1884 Series Rotary Cutter 312-880M
Table of Contents
Maintenance
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.
The parts on your Rotary Cutter have been specially
designed and should only be replaced with genuine Land
Pride parts. Do not alter the cutter in a way which will
adversely affects its performance.
Cutter Blade Maintenance
!
DANGER
Always disconnect main driveline from tractor PTO before
servicing underside of cutter. PTO can be engaged if tractor is
started causing in damage to cutter, bodily injury or death.
!
DANGER
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 the hydraulics is shut off.
!
WARNING
Keep blade bolt access hole covered at all times except when
servicing cutter blades. Make sure driveline is disconnected
from the tractor before servicing cutter blades.
!
WARNING
Do not operate cutter with blades that are bent, out of balance,
excessively worn, excessively nicked, or with blade bolts that
are excessively worn. Such blades can break loose from the
cutter at high speeds causing serious injury or death.
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.
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.
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 could contribute to
premature bearing wear/breakage and/or structural
cracks in gearbox and/or deck.
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 in the deck as
shown in 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
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 26:
24584
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. Always use a used
blade nut or plain nut in steps 7 & 8 below and then
replace used nut with new locknut in step 9.
Section 5: Maintenance and Lubrication