•Multi-plate
dry clutch – Electro-hydraulically actuated mechanically engaged multi-plate
dry clutch takes drive straight from the crankshaft pulley. The 1000 rpm PTO is
either “on” or “off” there is no modulation.
1.
PTO multi-plate dry clutch
2.
PTO control housing
3.
PTO input shaft
4.
Engine crankshaft pulley coupler
5.
PTO reduction gearbox
•
•Self
Lubrication Gearbox – Fully self contained system, Multiplate
clutch electro-hydraulically engaged via a proportional solenoid valve allowing
a modulated starting of the 1000 rpm PTO. The PTO is either “on” or “off” there
is no modulation. Drive supplied from the engine crankshaft through duplex
chain drive and sprockets.
1. Input from engine crankshaft via Duplex
chain & sprockets
2.
Piston Brake
3.
Lubrication & return oil pumps
4.
Output shaft 1000 rpm (Clockwise from
seat)
5.
Oil return to transmission sump
6.
Oil supply (from tractor Low Pressure
circuit)
7.
Control Solenoid
•
•Zuidberg - DIA Kits are available for many
products which incorporate smooth PTO start-up with
electro-hydraulic proportional valve.
1.Friction discs and steel plates
2.Clutch release bearing
3.Spring
4.Piston
5.Diaphragm spring
•
Disengaged
•Solenoid valve de-energised allowing the
oil to return to the reservoir.
•The spring (3) pushes the piston (4) out
of the housing and pushes the clutch release bearing (2) into the PTO clutch
diaphragm spring (5).
•Pressure is applied to the diaphragm
spring (5) releasing the force acting on
the clutch pressure plate.
•The springs in between the friction discs
and steel plates (1) expand, allowing the clutch hub to rotate freely within
the clutch housing.
Engaged
•Solenoid valve is energised, applying low
pressure oil to the piston (4).
•Low pressure oil acting against the
piston (4), overcomes the piston spring (3), retracting the piston (4) into the
housing, releasing the clutch release bearing (2) from the force of the
diaphragm spring (5).
• The diaphragm spring (5), compresses the
springs in between the friction discs and steel plates (1), clamping the
friction discs and steel plates (1) together, locking the clutch hub and the
clutch housing together.
Oil pressure and return for front PTO via
Front brake valve.
1 - Oil return pipe
2 - Oil pressure supply pipe
NOTE:
This block must be fitted when the Front PTO option is requested, even if the
tractor has not got front brakes.
to be continue
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