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Section 4: Maintenance and Lubrication
6/26/06
RCS3596, RCSM3596, RCS3510 & RCSM3510 Series Rotary Cutters 312-708M
Land Pride
Table of Contents
Driveline Clutch
Cutter drive components are protected from shock loads
by a 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 4-2:
1. Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction discs.
Clutch
Figure 4-2
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, such indicates that slippage has not
occurred and the clutch must be disassembled to
separate the friction discs, see “Clutch Assembly
and Disassembly” below.
5. Tighten each of the 8 spring retainer nuts on the clutch
housing EXACTLY 2 revolutions to restore the original
clutch setting pressure.
6. The clutch should be checked during the first hour of
cutting and periodically each week. An additional set
of scribe marks can be added to check for slippage.
See “Clutch Assembly and Disassembly” below to
adjust for proper spring length.
13693
Clutch Assembly and Disassembly
Refer to Figure 4-3:
If the clutch run-in procedure, see “Clutch Run-In” above,
indicated that one or more friction discs did not slip, the
clutch must be disassembled to separate the friction discs.
Disassembly of the clutch is simply a matter of first
removing the spring retainer nuts (#1), springs (#2) and
bolts (#3) from the assembly. Each friction disc (#4) must
then be separated from the metal surface adjacent to it.
Inspect all parts for excessive wear and condition. Clean
all parts that do not require replacement.
Clutch Disassembly
Figure 4-3
The original friction disc thickness is 1/8" (3.2mm) and
should be replaced if the thickness falls below 3/64"
(1.1mm). If the clutches have been slipped to the point of
“smoking”, the friction discs may be damaged and should
be replaced. Heat build-up may also affect the yoke
joints.
Refer to Figure 4-4:
Install new friction discs if needed and reassemble all
components in proper order. Progressively tighten each
spring retainer boltuntil the spring length is between 1.120
to 1.110 inches for 540 RPM and 1.020 to 1.010 inches
for 1000 RPM.
Clutch Adjustment
Figure 4-4
14714
4-Plate Slip Clutch
540 RPM (shown)
20903