Section 5: Maintenance & Lubrication
RC(M)3712 & RCG(M)3712 Rotary Cutters 334-203M
11/6/18
41
Assembly
Reassemble each friction disk (#4) next to the metal plate
it was separated from. Install bolts (#3) through end
plates and intermediate plates as shown. Place
springs (#2) over the bolts and secure with nuts (#1).
Progressively tighten each spring retainer bolt until
correct spring height “A” is reached.
Clutch Run-In
Figure 5-6
Clutch Assembly
Figure 5-7
g
Clutch Spring Adjustment
Figure 5-8
Driveline
No.
Driveline
Location
PTO
Speed
Cat
No.
A (inches)
Spring Height
826-802C
Center
540/1000
4
1.32"
826-803C
Wings
540/1000
4
1.32"
13693
23554
24600
Clutch Run-In
1.
Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction disks.
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
.
3. Make sure the area is clear of all bystanders and
machine is safe to operate.
4. Start tractor and engage power take-off drive for 2-3
seconds to permit slippage of the clutch surfaces.
Disengage power take-off, then re-engage a second
time for 2-3 seconds. Disengage power take-off, shut
off tractor, and remove key. Wait for all components to
stop before dismounting from tractor.
5. Inspect 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 disk and plate are still aligned. A clutch that
has not slipped must be disassembled to separate
the friction disk plates. See
6. Tighten each of the 8 spring retainer nuts on the
clutch housing exactly 2 revolutions to restore clutch
to original setting pressure.
7.
Allow clutch to cool to ambient temperature before
operating again. Clutch is now ready for use.
8. 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 Figure 5-8 on page 41 to adjust spring length.
Clutch Disassembly, Inspection & Assembly
If clutch run-in procedure above indicated that one or more
friction disks did not slip, then the clutch must be
disassembled to separate the friction disks.
Disassembly
Disassembly of clutch is simply a matter of first removing
spring retainer nuts (#1), springs (#2), and bolts (#3) from
the assembly. Each friction disk (#4) must then be
separated from the metal surface adjacent to it.
Inspection
Inspect all parts for excessive wear and condition. Clean
all parts that do not require replacement.The original
friction disk thickness is 1/8" (3.2mm) and should be
replaced if thickness falls below 3/64" (1.1mm). If
clutches have been slipped to the point of “smoking”, the
friction disks may be damaged and should be replaced.
Heat build-up may also affect the yoke joints.
IMPORTANT:
