Land Pride RC5515 User Manual
Page 37
35
Section 5: Maintenance & Lubrication
5/29/13
RC5515 & RC6515 (540 RPM) RCM5515 & RCM6515 (1000 RPM) Rotary Cutter 318-721M
Type B Clutches
Clutch Run-In
Refer to Figure 5-8:
1.
Using a pencil or other marker, scribe a line across the
exposed edges of the clutch plates and friction disks.
Type B Clutch Run-In
Figure 5-8
2.
Carefully loosen each of the 6 nuts by exactly 1
revolution. 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 PTO drive at idle for 2-3
seconds to permit slippage of friction plates.
Disengage PTO, shut off tractor, and remove key.
Wait for all components to come to a complete stop
before dismounting from tractor.
5.
Inspect clutch to ensure that the scribed markings
made on the clutch plates and friction disc have
changed positions. If any two marks are still aligned,
then the clutch did not slip as it should. Skip to
step 8 if all clutch plates slipped.
6.
If the friction clutch did not slip, loosen the nuts one
more revolution. Make sure the nuts have full thread
engagement on the bolt and then repeat steps 4 - 5.
7.
A clutch that does not slip must be disassembled to
separate the friction disk plates. See “Clutch
Disassembly, Inspection & Assembly” below.
8.
Tighten each of the nuts on the clutch back to their
original location to restore clutch pressure.
9.
Allow clutch to cool to ambient temperature before
operating again. Clutch is now ready for use.
10. 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
The clutch must be disassembled into its separate friction
disks if clutch run-in procedure above indicated that one or
more friction disks did not slip. See disassembly
instructions.
26618
Type B Clutch Assembly
Used With Drivelines 826-185C & 826-481C
Figure 5-9
Disassembly
Refer to Figure 5-9:
1.
Determine if you have a 2-plate clutch or 4-plate
clutch. Use matching illustration in Figure 5-9 below.
2.
Measure from outside of belleville spring (#6) to
outside of plate (#4) on center line of all 6 bolts (#6).
Record these distances for reassembly.
3.
Remove bolts (#7) evenly & belleville spring (#6).
4.
Separate all friction disks (#2) from plates (#4 & #5),
hub (#3), and yoke flange (#1).
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 (#2) next to the metal
plate it was separated from. Install bolts (#7) through the
end plates and intermediate plates as shown and secure
with nuts (#8). Tighten each nut to the measured
distance (A) recorded in step 2 during disassembly.
2-Plate Assembly
4-Plate Assembly
26637
26638
IMPORTANT: If you have already loosened each
nut (#8) by 1 or 2 revolutions, retighten nuts before
measuring distance (A). Measure distance (A)
within (+/-.015") from outside of belleville spring (#6)
to outside of backing plate (#4) on center line of all
6 bolts (#7) and record before disassembling the
clutch. These six measurements must be kept and
reused when reassembling the clutch to restore the
belleville spring to its original pressure setting.