Toro Groundsmaster 4500-D Series - Cutting Deck Blade Braking

CuttingDeckBladeBraking
3500
PSI
1500
PSI
P2
PRV2
LC2
M3
M4
RV09
FRONT
LEFT
1.16
CID
1.16
CID
G4
G3
FRONT
CENTER
#1
#4
TO OIL
FROM
COOLER
GEAR
PUMP
ORIFICE
DECK CONTROL
MANIFOLD
g308183
Figure52
3500
PSI
1500
PSI
P2
PRV2
LC2
M3
M4
RV09
FRONT
LEFT
1.16
CID
1.16
CID
G4
G3
FRONT
CENTER
#1
#4
TO OIL
FROM
COOLER
GEAR
PUMP
ORIFICE
DECK CONTROL
MANIFOLD
g308184
Figure53
3500
PSI
1500
PSI
P2
PRV2
LC2
M3
M4
RV09
FRONT
LEFT
1.16
CID
1.16
CID
G4
G3
FRONT
CENTER
#1
#4
TO OIL
FROM
COOLER
GEAR
PUMP
ORIFICE
DECK CONTROL
MANIFOLD
g308185
Figure54
WhentheoperatorturnsthePTOswitchOFF(orifthedecksareraised),deck
manifoldsolenoidvalves(PRV1,PRV2,SV1andSV2)arede-energized.The
valveswillshifttodirectoilawayfromthedeckmotorsandtowardtheoilcooler
andlter.Hydraulicpressureisreducedtothecuttingdeckmotorswhich
slowsthecuttingbladesandalsoallowsthedeckmanifoldreliefvalve(RV)to
Groundsmaster
®
4500-D/4700-D
Page5–35
HydraulicSystem:HydraulicFlowDiagrams
19245SLRevA