SkyTrak 6036 Service Manual - Manual (Page 181)

Section 9 Hydraulic System
Model 6036/6036T S/N 9B0500 thru 14833 9-31
3. The steer select valve solenoid is energized
and shifts the valve spool. Oil from the rod
end of the right front cylinder and from the
base end of the left front cylinder is channeled
trough ports J to G of the steer select valve to
the base end of the rear right cylinder and the
rod end of the rear left cylinder.
4. Return oil from each of the rear cylinders is
channeled through ports H to K of the steer
select valve and through ports D to E of the
power steering control valve to the return filter
in the reservoir.
Left Turn - Crab Steer
When a left turn is being made with the steering
select switch in crab steer (down position):
1. The power steering control valve spool is
shifted so that supply pressure is applied
through ports F to C, Fig. 9.16, to the intake
side of the power steering unit metering
section.
2. A measured amount of hydraulic oil is ex-
hausted from the metering section and routed
back to the control valve section where it is
channeled through ports B to A to the base
end of the right front steering cylinder and the
rod end of the left front steering cylinder.
3. The steer select valve solenoid is energized
and shifts the valve spool. Oil from the rod
end of the right front cylinder and from the
base end of the left front cylinder is channeled
trough ports J to H of the steer select valve to
the rod end of the rear right cylinder and the
base end of the rear left cylinder.
4. Return oil from each of the rear cylinders is
channeled through ports G to K of the steer
select valve and through ports D to E of the
power steering control valve to the return filter
in the reservoir.
Right Turn - 2 Wheel Steer
When a right turn is being made with the steering
select switch in 2 wheel steer (center position):
1. The power steering control valve spool is
shifted so that supply pressure is applied
through ports F to B, Fig. 9.16, to the intake
side of the power steering metering section.
2. A measured amount of hydraulic oil is ex-
hausted from the metering section and routed
back to the control valve section where it is
channeled through ports C to D. Supply oil is
routed from port D to port K in the steer select
valve.
3. Both steer select valve solenoids are de-
energized. Oil is channeled through ports K to
J of the steer select valve to the rod end of the
right front steering cylinder and to the base
end of the left front steering cylinder.
4. Return hydraulic oil from each cylinder flows
through ports A to E of the power steering
control valve section to the return filter in the
reservoir.
Right Turn - 4 Wheel Steer
When a right turn is being made with the steering
select switch in 4 wheel steer (up position):
1. The power steering control valve spool is
shifted so that supply pressure is applied
through ports F to B, Fig. 9.16, to the intake
side of the power steering metering section.
2. A measured amount of hydraulic oil is ex-
hausted from the metering section and routed
back to the control valve section where it is
channeled through ports C to D. Supply oil is
routed from port D to port K in the steer select
valve.
3. The steer select valve solenoid is energized
and shifts the valve spool. Oil is channeled
through ports K to H to the rod end of the right
rear steering cylinder and the base end of the
left rear steering cylinder.
4. Return oil from each of the rear steering
cylinders flows through ports G to J of the
steer select valve to the rod end of the right
front steering cylinder and the base end of the
left front steering cylinder.
5. Return oil from each of the front steering
cylinders flows through ports A to E of the
power steering control valve to the return filter
in the reservoir.
Right Turn - Crab Steer
When a right turn is being made with the steering
select switch in crab steer (down position):
1. The power steering control valve spool is
shifted so that supply pressure is applied
through ports F to B, Fig. 9.16, to the intake
side of the power steering metering section.
2. A measured amount of hydraulic oil is ex-
hausted from the metering section and routed
back to the control valve section where it is
channeled through ports C to D. Supply oil is
routed from port D to port K in the steer select
valve.