Branson 3015r - Page 297

6
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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
orice 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owed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.