All Wheel Steer System (AWS

REAR AXLE

IRM LEFT VALVE THERMAL RELIEF VALVE

IRM SHUTOFF VALVE RESOLVER

IRM RIGHT VALVE

RESOLVER LOCK VALVE

FROM STABILIZER VALVE GROUP

TO BACKHOE VALVE GROUP

RETURN AUXILIARY

LOADER TILT VALVE GROUP LIFT

TO STABILIZER VALVE GROUP

TO BACKHOE VALVE GROUP PILOT POPPET VALVES TST 1 TST 2

CIRCLE STEER VALVE

PILOT POPPET VALVES

BACK FLOW CHECK VALVE

STEERING PRIORITY VALVE

TO BRAKE VALVE ALL WHEEL STEER SYSTEM

HOLD

ALL WHEEL STEER CONTROL VALVE GROUP

STEERING METERING UNIT CROSSOVER LINE RELIEF VALVES

SIGNAL FRONT AXLE

• All Wheel Steer 102

All Wheel Steer System (AWS)

The All Wheel Steer (AWS) system is similar to what was used on the "C" Series machines.

Operation of the AWSvalve is the same. The major differences between the models are:

- Since the "D" Series AWS system uses non-boosted brakes, a steering and brake resolver is no longer in the signal line between the steering priority valve and the SMU.

- Due to the reverse signal network, the lines routing between the valve sections has changed.

- The switch to control AWS has been changed to two separate buttons as shown earlier.