- 17 -
FRICTION SLIP CLUTCH
The EL 92 is factory equipped with an adjustable friction slip clutch.
Spring pressure is factory pre-set (L = 32 mm / 1 1/4") for 70 kW (95 hp) tractors at 540 rpm (min
-1
) PTO (photo 13).
The theoretical average length of springs (R) (L = 32 mm / 1 1/4") is only an indication and can be slightly modified
according to machine width, work conditions and tractor. Too light a spring pressure will allow the plates to slip
continuously or intermittently at frequent intervals, resulting in overheating and rapid wear of the friction plates.
On the other hand, over pressured or completely coil bound springs will provide no protection to the drive
components (this occurs at 31 mm spring length).
IMPORTANT :
* Always check if the clutch is set correctly for the work to be carried out. It should feel warm
to the touch during work.
* If the clutch slips excessively (too light a spring pressure, obstacles, etc.), readjust if
necessary and wait until the temperature of the clutch drops to a normal work temperature of
approximately 40°C (104 °F) before getting back to work. If the clutch overheats it will slip more
easily, thus increasing disc wear.
* With L = 31 mm the springs (R) will be completely coil bound and the clutch cannot operate.
Never work with springs fully locked as this risks deteriorating drive line components if an
obstruction jams the rotor. Always loosen at least half a turn.
NEVER FULLY LOCK THE SPRINGS.
Check clutch setting regularly, especially after the machine hasn’t worked for a long time. Completely slacken
off the 6 springs (R) by unscrewing their securing nuts, let the friction plates slip for a few seconds then retighten
springs as explained above (to L = 32 mm / 1 1/4").
Note : We recommend that the clutch guard be removed for easier access when carrying out slip clutch
adjustments. Don’t forget to bolt guard back in place after adjustments have been made.
13
Содержание EL 92
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