Land Pride RCR1860 Series Operator's Manual - Warning
22
Section 5: Maintenance and Lubrication
RCR1860 and RCR1872 Series Rotary Cutters 312-849M
2/03/12
Table of Contents
Refer to Figure 5-2:
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.
9.
Once blade deflection is correct, replace used nut
with new locknut (#6) and torque to 450 ft-lbs.
10. If replacing dishpan (#4), nut on gearbox output shaft
should be torqued to 450 ft-lbs. minimum and cotter
pin installed with legs securely bent around nut.
Cutter Blade Assembly
Figure 5-2
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.
3/4" maximum
blade deflection
when blade
bolts are tight
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Land Pride Cutter Blade Parts
Item Part No.
Part Description
318-586A
BLADE BOLT KIT
(Includes items 1, 2, 5, & 6 below)
1
802-277C
BLADE BOLT 1 1/8-12 x 3 7/16 WITH KEY
2
312-075D
BLADE SPACER 16 GA. (.060")
2
312-082D
BLADE SPACER 18 GA. (.048")
2
312-089D
BLADE SPACER 20 GA. (.036")
2
312-808D
BLADE SPACER 24 GA. (.024")
3
820-198C
RCR1860 STANDARD BLADE 25"LG. CCW
3
820-199C
RCR1872 STANDARD BLADE 31"LG. CCW
3
820-212C
RCR1860 LOW LIFT BLADE 25"LG. CCW
3
820-213C
RCR1872 LOW LIFT BLADE 31"LG. CCW
4
312-815H
RCR1860 15" DISHPAN WELDMENT
4
312-841H
RCR1872 15" DISHPAN WELDMENT
5
804-147C
WASHER FLAT 1 HARD ASTMF436
6
803-170C
NUT HEX TOP LOCK 1 1/8-12 PLATE
Shearbolt Protected Drivelines
!
WARNING
Engage parking brake, disengage PTO, shut off tractor, and
remove key before dismounting tractor to make adjustments.
The Standard Shear Bolt Driveline is secured to the
cutter with a shearbolt for protection of driveline and
gearbox. The shearbolt is designed to shear off when the
blade impacts objects that the cutter is not designed to
cut through. Replace shearbolt with Land Pride part
#802-264C. Refer to Figure 1-4 on page 10.
Slip-Clutch Protected Drivelines
!
WARNING
Engage parking brake, disengage PTO, shut off tractor, and
remove key before dismounting tractor to make adjustments.
Driveline components are protected from shock loads by
a two plate slip-clutch. The clutch must be capable of
slippage during operation to protect the gearbox,
driveline and other drivetrain parts. The slip-clutch
driveline is secured to the cutter with a grade 8 bolt.
The clutch should be “run-in” prior to initial operation and
after long periods of inactivity to remove any oxidation
that may have accumulated on the friction surfaces.
Repeat “run-in” instructions at the beginning of each
season and when moisture and/or condensation seizes
the inner friction plates.
Clutch Run-In
Refer to Figure 5-3:
1.
Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction discs.
Clutch
Figure 5-3
2.
Carefully loosen each of the 8 spring retainer nuts by
exactly 2 revolutions. It will be necessary to hold hex
end of retainer bolt in order to count the exact
number of revolutions.
IMPORTANT: A snap ring is installed so that the
driveline does not come loose from the gearbox
should the shearbolt shear. (Replace damaged or
worn snap ring with Land Pride part #800-079C.)
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