Fitting the P.t.o. shaft
Before fitting the stud screws, clean off all traces of oil or grease
from threaded parts; apply Loctite 242 to the threads before
inserting.
Power take-off clutch
General specifications
The power take-off clutch is an oil-immersed multidisc type, hydraulically engaged.
The oil needed to operate the clutch is drawn from the transmission, appropriately filtered and directed to the gear
pump mounted to the left hand side of the transmission housing.
The clutch can be operated mechanically or electrohydraulically. The mechanical type of linkage operates directly on
the directional control valve, allowing oil to flow under pressure to the actuator piston. In the case of the electrohydraulic
control, a solenoid valve opens the circuit, allowing oil to flow to the piston. In either case, the effect of applying hydraulic
pressure is to compress the driving and driven discs of the clutch assembly together and transmit rotation to the
projecting P.T.O. shaft.
Also operated hydraulically by way of the same directional control valve is a second piston; this acts on a brake that
immobilizes the disc carrier when the clutch is disengaged, thereby preventing rotation of the P.T.O. shaft.
Fig. 9 - Section through the P.T.O. clutch assembly.
transmission
power take-off
Fig. 8 - External power take-orr shaft terminal.
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