Cutting Deck Blade Braking - Toro Groundsmaster 4500-D Series Service Manual

Cutting Deck Blade Braking

Groundsmaster ® 4500-D/4700-D
19245SL Rev A
#1
1.16
CID
#4
1.16
CID
ORIFICE
g308183
#1
1.16
CID
#4
1.16
CID
ORIFICE
g308184
#1
1.16
CID
#4
1.16
CID
ORIFICE
g308185
When the operator turns the PTO switch OFF (or if the decks are raised), deck
manifold solenoid valves (PRV1, PRV2, SV1 and SV2) are de-energized. The
valves will shift to direct oil away from the deck motors and toward the oil cooler
and filter. Hydraulic pressure is reduced to the cutting deck motors which
slows the cutting blades and also allows the deck manifold relief valve (RV) to
DECK CONTROL
MANIFOLD
M3
1500
PSI
PRV2
FRONT
CENTER
RV09
FRONT
LEFT
M4
LC2
G4
TO OIL
COOLER
Figure 52
DECK CONTROL
M3
1500
PSI
PRV2
FRONT
CENTER
RV09
FRONT
LEFT
M4
LC2
G4
TO OIL
COOLER
Figure 53
DECK CONTROL
MANIFOLD
M3
1500
PSI
PRV2
FRONT
CENTER
RV09
FRONT
LEFT
M4
LC2
G4
TO OIL
COOLER
Figure 54
Page 5–35 Hydraulic System: Hydraulic Flow Diagrams
G3
P2
FROM
GEAR
3500
PUMP
PSI
MANIFOLD
G3
P2
FROM
GEAR
PUMP
3500
PSI
G3
P2
FROM
GEAR
PUMP
3500
PSI