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Section 5: Maintenance & Lubrication
RCR1542 and RCR1548 Rotary Cutters 312-556M
11/25/15
Table of Contents
Refer to Figure 4-3:
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 by
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 driveline drive for
2-3 seconds to permit slippage of the clutch
surfaces. Disengage the driveline, then re-engage a
second time for 2-3 seconds. Disengage driveline,
shut off tractor, and remove key. Wait for all
components to stop before dismounting from tractor.
Clutch Run-In
Figure 4-3
4. Inspect the clutch and ensure that the scribed
markings made on the clutch plates have changed
position. Slippage has not occurred if any two marks
on the friction disc and plate are still aligned.
5. Tighten each of the 8 spring retainer nuts on the
clutch housing exactly 2 revolutions to restore the
clutch to the original setting pressure.
6. The clutch should be checked during the first hour of
operation and periodically each week. An additional
set of scribe marks can be added to check for
slippage. See “Clutch Assembly” to adjust for
proper spring length.
Clutch Disassembly
Refer to Figure 4-4:
To disassemble the clutch, first remove 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.
13693
IMPORTANT: If clutch run-in procedure indicated
that one or more friction disks did not slip, the clutch
must be disassembled to separate the friction discs.
Clutch Disassembly
Figure 4-4
Inspection
Inspect all parts for excessive wear and condition. Clean
all parts that do not require replacement.The original
friction disc thickness is 1/8" and should be replaced if
the thickness falls below 3/32". 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.
Clutch Assembly
Refer to Figure 4-4:
Reassemble each friction disc (#4) next to the metal plate
it was separated from. Make certain the bushing is
positioned as shown. Install bolts (#3) through the end
plates and intermediate plates as shown. Place
springs (#2) over the bolts and secure with nuts (#1).
Refer to Figure 4-5:
Progressively tighten each spring retainer nut until
correct spring length “A” is reached.
• A = 1.26"
Clutch Adjustment
Figure 4-5
19783
30904