Land Pride rcf3696 Manuale Utente

45

12/15/15

Cutter drive components are protected from shock loads 
by a friction slip-clutch. The clutch must be capable of 
slippage during operation to protect the gearbox, 
driveline and other drive train parts.

Friction clutches should be “run-in” prior to initial 
operation and after long periods of inactivity to remove 
any oxidation that may have accumulated on friction 
surfaces. To prevent driveline and gear box damage, 
repeat “run-in” instructions at beginning of each season 
and when moisture and/or condensation seizes inner 
friction plates. 

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 on 
the clutch housing a total of 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 tractor and engage driveline for 2-3 seconds to 
permit slippage of the clutch surfaces. Disengage the 
PTO, then re-engage a second time for 2-3 seconds. 
Disengage the PTO, shut off tractor and remove key. 
Wait for all components to stop before dismounting 
from tractor.

4.

Inspect clutch and ensure that 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 spring retainer nut on the clutch 
housing exactly 2 revolutions to restore clutch to 

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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.

original setting pressure. See Figure 5-5 on page 46 
and tables below Figure 5-5 for exact spring length.

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. 

Refer to Figure 5-4:
Disassembly of the clutch is simply a matter of removing 
the spring retainer nuts (#1), springs (#2) and bolts (#3) 
from the assembly. Each friction disc (#4) must then be 
separated from the metal surface adjacent to it.

Inspect all parts for excessive wear and condition. Clean 
all parts that do not require replacement.The original 
friction disc thickness is 1/8" (3.2 mm) and should be 
replaced if thickness falls below 3/64" (1.1 mm). 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 yoke joints. 

Install new friction discs if needed and reassemble all 
components in proper order. 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).

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