Toro Groundsmaster 5900 Series Service Manual page 124

Right Wing Deck Raise
Left Wing Deck Raise
Hydraulic System: Hydraulic Flow Diagrams
To raise the right wing deck, the rear of the right console switch is pushed to act
as an input to the slave TEC. The controller provides an electrical output to
solenoid valves S1 and S7 in the steering/deck lift manifold. The energized
solenoid valves shift to allow a passage for circuit oil flow to the barrel end of
the right deck lift cylinder. Shifted S1 prevents oil flow from returning directly to
the traction charge circuit. Shifted S7 allows an oil path through orifice OR6 (to
control raising speed), the check valve at S9 (de−energized), the check valve
at OR7 and to the barrel end of the lift cylinder to extend the lift cylinder and
raise the right wing deck. Oil from the extending cylinder is directed through S8
(de−energized) and returns to the hydraulic reservoir.
When the deck switch is released, the manifold solenoids are de−energized and
the lift cylinder and right wing deck are held in position.
To raise the left wing deck, the rear of the left console switch is pushed to act
as an input to the slave TEC. The controller provides an electrical output to
solenoid valves S1 and S2 in the steering/deck lift manifold. The energized
solenoid valves shift to allow a passage for circuit oil flow to the barrel end of
the left deck lift cylinder. Shifted S1 prevents oil flow from returning directly to
the traction charge circuit. Shifted S2 allows an oil path through orifice OR2 (to
control raising speed), the check valve at S4 (de−energized), the check valve
at OR3 and to the barrel end of the lift cylinder to extend the lift cylinder and
raise the left wing deck. Oil from the extending cylinder is directed through S3
(de−energized) and returns to the hydraulic reservoir.
When the deck switch is released, the manifold solenoids are de−energized and
the lift cylinder and left wing deck are held in position.
Page 5–24 Groundsmaster ® 5900 & 5910
16227SL Rev B