Land Pride RCR1860 Series, Operator'S Manual

Page: 32 / 42

Section 5: Maintenance &Lubrication
Table of Contents
10/23/20 RCR1860 & RCR1872 Rotary Cutters 312-849M
28
Clutch
Figure 5-3
Clutch Run-In
Refer to Figure 5-3:
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 hex
end of retainer bolt in order to count the exact
number of revolutions.
3. 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.
4. 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 disc and plate are still aligned.
5. Tighten each of the 8 spring retainer nuts on the
clutch housing exactly 2 revolutions to restore clutch
to original setting pressure.
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.
See Figure 5-4 to adjust spring length.
Clutch Assembly and Disassembly
Refer to Figure 5-5:
If clutch run-in procedure indicated that one or more of the
friction disc did not slip, the clutch must be disassembled to
separate the friction discs. Refer to “Clutch Run-In” on
this page. See Parts Manual for a detailed parts
breakdown.
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.
IMPORTANT: Refer to Figure 5-4. Be Sure to
measure and record length (“A”) of each clutch
spring before disassembling the clutch.
Clutch Adjustment
Figure 5-4
Clutch Disassembly
Figure 5-5
Disassembly
After recording each spring length, remove spring
retainer nuts (#1), springs (#2), and bolts (#3). Separate
each friction disc (#4) from their adjacent metal surfaces.
Refer to Parts Manual for a detailed parts breakdown.
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" (3.2mm) and should be
replaced if thickness falls below 3/64" (1.1mm). If
clutches have been slipped to the point of “smoking”, the
friction discs may be damaged and should be replaced.
Heat build-up may also affect the yoke joints.
Assembly
Refer to Figure 5-5:
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 5-4:
Progressively tighten each spring retainer bolt until
correct spring height “A” is reached.
Model
No.
Driveline
No.
PTO
Speed
Cat
No. A (inches)
Spring Height
RCF2060
312-026A
540 3 1.269" to 1.312"
826-657C
826-022C
540 3 1.000 to 1.010"
RCF2072
312-728A
540 3 1.269" to 1.312"
826-656C
826-344C
540 3 1.000 to 1.010"
A = Measured length of each spring
before disassembling slip clutch.
Use “A” dimension in table below
if measurements were not taken
before disassembling slip clutch.
24600
19783
IMPORTANT: Refer to Figure 5-4. Be Sure to
measure and record length (“A”) of each clutch
spring before disassembling the clutch.