Land Pride RC5020 - Manual (Page 38)

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Section 5: Maintenance & Lubrication
RC5020 (540 RPM) and RCM5020 (1000 RPM) Rotary Cutters 318-474M 5/29/13
Table of Contents
Disassembly
Refer to Figure 5-8:
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.
Type A Clutch Disassembly
Figure 5-8
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.
Assembly
Reassemble each friction disk (#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 5-9:
Progressively tighten each spring retainer bolt until
correct spring height “A” is reached.
Clutch Adjustment
Figure 5-9
Driveline
No.
Driveline
Location
PTO
Speed
Cat.
No.
A"
Spring Height
826-494C Wing 540/1000 5 1.32"
826-495C Center 540/1000 5 1.32"
IMPORTANT: Not all clutches are assembled the
same with the same number of components. Be
sure to keep track of order and orientation of your
clutch components during disassembly.
14714
IMPORTANT: Keep track of order and orientation of
your clutch components during disassembly
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Type B Clutches
Clutch Run-In
Refer to Figure 5-10 (View - A):
1. Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction disks.
2. Tighten all 4 nuts uniformly until spring load is low
enough that the clutch slips freely with PTO
engaged.
Type B Clutch Run-In
Figure 5-10
3. Make sure the area is clear of all bystanders and
machine is safe to operate.
4. Start tractor and engage PTO for 2-3 seconds to
permit slippage of clutch surfaces. Disengage PTO,
then re-engage a second time for 2-3 seconds.
Disengage PTO, 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 “Clutch Disassembly,
Inspection & Assembly” below.
Refer to Figure 5-10 (View - B):
6. If no two marks on the friction disk and plate are still
aligned, Turn all 4 nuts fully back.
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.
Clutch Disassembly, Inspection & Assembly
Refer to 4-Plate Disassembly & Assembly on page 37:
If clutch run-in procedure above indicated that one or more
of the friction disks did not slip, then the clutch must be
disassembled to separate the friction disks.
!
CAUTION
Before proceeding, secure clutch firmly in a vise or other
clamping device to prevent injury.
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