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Section 3 Maintenance and Lubrication
12/14/01
RCR16 Series Rotary Cutters 312-742M
Land Pride
Section 3
Maintenance and Lubrication
Maintenance
Proper servicingand adjustment can increase the life of any
implement. With careful and systematic inspection, you can
avoid costly maintenance, time and repair.
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 Cutting Blades
1. 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.
2. Both blades should weigh the same after sharpening.
3. When replacing or sharpening the cutter blades,
examine bolts for excessive wear and replace if
necessary. To replace blades:
a. Order blade bolt Land Pride part # 802-277C.
b. Torque blade bolt lock nut to 450 ft. pounds. An
extended cheater bar may be required to achieve
proper torque.
If replacing dishpan, nut on gearbox output shaft should
be torqued to 450 foot/pounds and cotter pin installed in
nut with legs securely bent around nut.
Shearbolt Driveline
Shear Bolt Replacement
The Standard Shear Bolt Driveline is secured to the cutter
with a shearbolt for protection of the drivelineand gearbox.
The shearbolt is designed to shear off when the blade
impacts objects that the cutter is not designed to cut
through. Should the shearbolt need replaced, replace with
Land Pride part #802-264C. Refer to page 9 Figure 1-2.
Driveline Clutch (Optional)
Cutter drive 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.
Prior to initial operation and after long periods of inactivity,
the clutch should be "run-in" to remove any oxidation that
may have accumulated on the friction surfaces.
!
CAUTION
Engage parking brake, disengage PTO, shut off tractor, and
remove key before making any of the following adjustments.
Clutch Run-In
Refer to Figure 4-1:
1. Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction discs.
2. Carefully loosen each of the 8 spring retainer nuts on
the clutch housing a total of EXACTLY 2 revolutions. It
will be necessary to hold the hex end of the retainer
bolt in order to count the exact number of revolutions.
3. Start the tractor and engage the PTO drive for 2-3
seconds to permit slippage of the clutch surfaces.
Disengage the PTO, then re-engage a second time for
2-3 seconds. Disengage the PTO, shut off tractor and
remove key. Wait for all components to stop before
dismounting from tractor.
4. Inspect the clutch and ensure that the scribed
markings made on the clutch plates have changed
position. If any two marks on a friction disc and plate
are still aligned, this indicates that slippage has not
NOTE: Care should be taken in order not to remove
any more material than necessary when sharpening
blades.
IMPORTANT: Replace blades with genuine Land
Pride blades only. Blades must be ordered and
replaced in pairs.
IMPORTANT: A snap ring (Land Pride part
#800-079C) is installed so that driveline does not
come loose from the gearbox should the shearbolt
shear.
Clutch
Figure 4-1
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