Service Manual

Groundsmaster 360 Hydraulic SystemPage 4 − 23
PTO Circuit
The transmission used on Groundsmaster 360 ma-
chines includes a hydraulic, multi−plate clutch that is
used to engage the PTO. Hydraulic flow for PTO clutch
engagement is provided by the transmission charge
pump.
When the PTO switch is turned on (pulled up), the trans-
mission solenoid valve is energized to allow hydraulic
flow to engage the PTO clutch. As the PTO clutch en-
gages, an integral PTO brake is simultaneously re-
leased to allow rotation of the drive shaft and cutting
deck. An orifice and accumulator in the transmission
prevent abrupt engagement of the PTO.
Pressure to the PTO clutch is limited by the pressure
valve in the transmission. Pressure valve setting is from
280 to 340 PSI (19.3 to 23.4 bar).
When the PTO switch is turned off (pushed down), the
transmission solenoid valve is de−energized and the
PTO clutch is disengaged. The integral PTO brake is ap-
plied to control the stopping rate of the drive shaft and
cutting deck.
Hydraulic
System