CHAPTER 4 8354/8404
4-14
D615-W02 May-2003
615W420A
(1) Clutch Body
(2) Seal Ring
(3) Piston
(4) Piston Ring
(5) Piston Ring
(6) Brake Plate
(7) Return Plate
(8) Spring
(9) Pressure Plate
(10) Spline Hub
(11) Clutch Disc
(12) Clutch Plate
(13) Ball Bearing
(14) Snap Ring
(15) Snap Ring
(16) Spacer
4.1 CHARACTERISTICS
• PTO clutch body is a wet multiplate hydraulic clutch
and the clutch valve is set to [ON] or [OFF] to supply
the PTO, using PTO switch.
• When PTO clutch is set to [ON], it can be selected
automatically or manually. If PTO switch is selected
to [AUTO] and hydraulic elevating arm located to
lncrease, PTO power will be disconnected automati-
cally. If PTO switch selected to [MANUAL], PTO
power will be transmitted regardless of position of
hydraulic elevating arm.
• The PTO clutch valve has a built-in Modulator valve,
which increases the pressure of the clutch slowly
and takes a role of semi clutch. The PTO clutch body
is installed with a brake system to prevent the clutch
body from rotating due to inertia force in [OFF] and
to stop the PTO shaft accurately.
615W421A
4.2 HYDRAULIC CIRCUIT
• Reducing valve of the modulator valve assembly
controls the pressure of the oil and flows oil into the
PTO clutch or drain tank in accordance with the so-
lenoid valve control.
(1) Sequence Valve
(2) Reducing Valve
(3) Solenoid Valve
(4) Pressure Control Valve
(5) PTO Clutch Body
[A] INPUT
4. PTO CLUTCH
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K&T Saw Shop 606-678-9623 or 606-561-4983
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