5. MAINTENANCE
FRICTION CLUTCH
If you drive with a large tractor (more than 90 HP) you can ensure a long life for your
tractor and machine by mounting a PTO drive shaft with friction clutch between
tractor and machine.
The PTO drive shaft with friction clutch is standard on GX 3202 SM and is
available as option for the other models.
Fig. 5-2 The figure illustrates how the clutch protects the transmission against high torque
peaks and at the same time is capable of transmitting the torque while it is in function
(slips).
The friction clutch must be maintained at regular intervals. At the same time the
clutch must be checked after any long period of standstill. This especially applies
after winter storage before the machine is used for the first time in the season.
Maintaining the friction clutch:
Fig. 5-3
1) Disassemble the clutch and clean all parts of possible rust.
2) Check the clutch discs A for wear and replace if required.
3) Clean and grease the freewheel clutch B.
4) Assemble and mount the clutch again. See also the instruction manual for the
PTO drive shaft delivered by the supplier.
IMPORTANT: The outer metal band C indicates whether the tightening of the
springs is correct. Tighten the bolts D just so much that the
metal band C can be turned (max. 0.5 mm play).
The torque setting is not correct if the metal band is too tight or
deformed due to excessive tightening of the bolts.
WARNING:
If the clutch is overloaded it will slip and get heated, and hence
be worn quickly. Overheating will damage the friction plates. If
the clutch is blocked or partly put out of function in other ways,
the factory guarantee will be discontinued.
CONTROL OF BALANCE
WARNING:
When driving in the field you must always pay attention if the
machine starts vibrating more than usually or if it has jarring
sounds. The discs rotate with approx. 3000 RPM, and one
broken blade may cause serious injury to persons or material
damage resulting from unbalance.
If working with a modern closed cabin the symptoms may be
difficult to discover, and once in a while you have to get out and
check if all blades and rotor fingers are intact. In the long run
unbalance will cause fatigue fractures and serious damage.
PIGB-093X-06 GX 2402/2802/3202 SM-GX 2402/2802 SC 0410
45
