Land Pride RCR1248 Manuale Utente

Pagina di 36
21
Section 5: Maintenance & Lubrication
12/15/15
RCR1248, RCR1260 and RCR1272 Rotary Cutter   326-047M
Maintenance
Proper servicing and adjustments are key to the long life 
of any implement. With careful inspection and routine 
maintenance, you can avoid costly downtime and repair.
Check all bolts after using the unit for several hours to be 
sure they are tight. Replace any worn, damaged, or 
illegible safety labels by obtaining new labels from your 
Land Pride dealer.
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CAUTION
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CAUTION
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CAUTION
Slip-Clutch Protected Driveline
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WARNING
Cutter drive components are protected from shock loads 
by either a two plate friction clutch or a shear bolt. 
The shearbolt is designed to shear off when the blade 
impacts objects that the cutter is not designed to cut 
through. Avoid shear bolt failure by engaging the PTO 
slowly at low engine rpm. See your Land Pride dealer 
when replacing shear bolts. Using higher grade shear 
bolt may result in driveline, gearbox, and/or tractor PTO 
damage.
Shear Bolt, Nut & Jam Nut Part Numbers
Part No.
Part Description
802-264C
HHCS 1/2-13X3 1/2 GR2
803-020C
NUT HEX 1/2-13 PLT
803-036C
NUT HEX JAM 1/2-13 PLT
Clutch Run-In
The clutch must be capable of slippage during operation 
to protect gearbox, driveline, and other drive train parts. 
Friction clutches should be “run-in” prior to initial 
operation and after long periods of inactivity. To prevent 
driveline and gearbox damage, repeat clutch “run-In” at 
the beginning of each season and when moisture and/or 
condensation seizes the inner friction plates.
Refer to Figure 5-31 on page 21:
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 the 
hex end of the retainer bolt in order to count the exact 
number of revolutions.
3.
Start the tractor and engage the driveline drive for 
2-3 seconds to permit slippage of the clutch 
surfaces. Disengage the driveline, then re-engage a 
second time for 2-3 seconds. Disengage driveline, 
shut off tractor, and remove key. Wait for all 
components to stop before dismounting from tractor.
4.
Inspect the 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”
 
to disassemble clutch.
5.
Tighten each of the 8 spring retainer nuts on the 
clutch housing exactly 2 revolutions to restore the 
clutch to the original setting pressure.
Clutch Run-In
Figure 5-31
6.
The clutch should be checked during the first hour of 
operation and periodically each week. An additional 
set of scribe marks can be added to check for 
slippage. See “Clutch Assembly” to adjust for 
proper spring length.
30560
Section 5: Maintenance & Lubrication