6
-
19
42hw-201601
Chapter 6 hydrauliC system
6
3015r(h)/3515r(h)/4015r(h)/F36r(h)/F42r(h) traCtOr
PTO VALVE
PST VALVE
*
3
*
64
3&
&/
/%5
'
7
F42W628a
PTO VALVE
PST VALVE
*
3
*
64
3&
&/
/%5
'
7
F42W629a
PTO OFF
The electric solenoid spool is turned ON and OFF
by the driver's operation of the PTO switch. When
the main spool is OFF, The flow P sent from the
PST valve is led to the main spool through the Ø1.3
orifice and is trapped while oil discharged from the
PTO clutch passes through the main spool to be
returned to the tank.
The port T of the PST valve discharges hydraulic oil
continuously regardless of movement of the steering
wheel and all of this oil is flowed to the port P of the
PTO valve. The PTO valve consists of the sequence
valve, which is opened at 16 kgf/cm
2
, DRV valve and
electrically operated ON/OFF solenoid valve.
Содержание 3015h
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