Steering - Toro Reelmaster 5200-D Service Manual

Steering

The gear pump section (P3) supplies hydraulic flow to
the steering control valve for turning the rear wheels and
cutting lift circuit. The pump takes its suction from the hy-
draulic reservoir.
With the steering wheel in the neutral position (rear
wheels positioned straight ahead), the engine running,
and the spool valve is in the center position, flow enters
the steering control valve at the IN port and goes through
the spool valve by-passing the rotary meter (V1) and
steering cylinder. Flow leaves the control valve through
the AUX port to the 250 PSI relief valve and hydraulic
reservoir.
Right Turn
When a right turn is made with the engine running, the
turning of the steering wheel positions the spool valve so
that flow goes through the top of the spool. Flow entering
the steering control valve at the IN port goes through the
spool and is routed to two places. First, most of the flow
through the valve is by-passed out the AUX port back to
the 250 PSI relief valve and hydraulic reservoir. Second,
the remainder of the flow is drawn through the rotary me-
ter (V1) and out the OUT port. Pressure retracts the pis-
ton for a right turn. The rotary meter ensures that the oil
flow to the cylinder is proportional to the amount of the
turning on the steering wheel. Fluid leaving the cylinder
Reelmaster 5200-D/5400-D
flows back through the spool valve then through the
OUT port and to the hydraulic reservoir.
The steering control valve returns to the neutral position
when turning is completed.
Left Turn
When a left turn is made with the engine running, the
turning of the steering wheel positions the spool valve so
that flow goes through the bottom of the spool. Flow en-
tering the steering control valve at the IN port goes
through the spool and is routed to two places. As in a
right turn, most of the flow through the valve is by-
passed out the AUX port back to the 250 PSI relief valve
and hydraulic reservoir Also like a right turn, the remain-
der of the flow is drawn through rotary meter (V1) but
goes out port (RH). Pressure extends the piston for a left
turn. The rotary meter ensures that the oil flow to the cyl-
inder is proportional to the amount of the turning on the
steering wheel. Fluid leaving the cylinder flows back
through the spool valve then through the OUT port and
to the hydraulic reservoir.
The steering control valve returns to the neutral position
when turning is complete.
Page 4 - 19 Hydraulic System