Pto Mow Circuit Cutting Deck Blade Braking - Toro Groundsmaster 5900 Series Service Manual

PTO Mow Circuit Cutting Deck Blade Braking

Groundsmaster ® 5900 & 5910
16227SL Rev B
1.5 CID
PTO SWITCH OFF
PRV NOT ENERGIZED
LC1 SHIFTED
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When the operator turns the PTO switch OFF or if a deck is raised with the
PTO switch ON, deck manifold proportional relief valve (PRV) is de−energized
causing logic cartridge (LC1) to shift (refer to
This shifted cartridge allows oil return out manifold port P2. As circuit pressure
decreases, SQ and LC2 are both shifted to their neutral positions, preventing
return flow from the deck motor and slowing the deck cutting blades
1.5 CID
PTO SWITCH OFF
PRV NOT ENERGIZED
LC1 AND RV SHIFTED
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M1
OR2 .025"
SQ
110 PSI
PRV
RV
10 PSI
600 PSI
M2
LC2
OR1
.063"
LEFT DECK
Figure 44
PTO Mow Circuit (page
M1
OR2 .025"
SQ
110 PSI
PRV
RV
10 PSI
600 PSI
M2
LC2
OR1
.063"
LEFT DECK
Figure 45
Page 5–31 Hydraulic System: Hydraulic Flow Diagrams
G1
P1
PUMP
FLOW
10 PSI LC1
3000 PSI
P2
CD
RETURN
5–28)).
(Figure
G1
P1
PUMP
FLOW
10 PSI LC1
3000 PSI
P2
CD
RETURN
44).