32
Section 4: Maintenance & Lubrication
RCR3596, RCRM3596, RCR3510 & RCRM3510 Rotary Cutters 312-517M
8/15/12
Table of Contents
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 tractor and engage driveline 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 clutch and ensure that 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 spring retainer nut on the clutch
housing exactly 2 revolutions to restore clutch to
original setting pressure. “Clutch Assembly” on
page 32 for exact spring length.
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.
Clutch Disassembly
Refer to Figure 4-4:
Disassembly of the clutch is simply a matter of 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.
Clutch 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" (3.2 mm) and should be
replaced if thickness falls below 3/64" (1.1 mm). If
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 yoke joints.
Clutch Assembly
Refer to Figure 4-4:
Install new friction discs if needed and reassemble all
components in proper order. Reassemble each friction
disc (#4) next to the metal plate it was separated from.
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 bolt until
correct spring height “A” is reached.
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.
4-Plate Slip Clutch Assembly (540 RPM Shown)
Figure 4-4
Clutch Adjustment
Figure 4-5
RCR(M)3596
RCR(M)3510
Driveline
No.
Driveline
Location
PTO
Speed
Cat
No.
A (inches)
Spring Height
826-215C
826-255C
826-256C
Main
Main
Jack Shaft
540
4
1.175"(S/N )
1.12" (S/N 566918-)
826-258C
826-259C
Main
Jack Shaft
1000
4
1.09"(S/N )
1.02" (S/N 566918-)
Driveline
No.
Driveline
Location
PTO
Speed
Cat
No.
A (inches)
Spring Height
826-215C
826-220C
826-225C
Main
Jack Shaft
Stub Shaft
540
4
1.175"(S/N )
1.12" (S/N 566918-)
826-216C
826-221C
826-226C
Main
Jack Shaft
Stub Shaft
1000
4
1.09"(S/N )
1.02" (S/N 566918-)
14714
24600
