THEORY OF OPERATION - CONTINUED
HYDRAULIC SYSTEM - CONTINUED
Dual Crossover Relief Valve. Valve is located at right and left sides of the frame above the front axle. An adjust-
able relief valve in each valve housing controls oil flow for earthmoving components and the steering system.
STEERING WHEEL PUMP VALVE
Steering Wheel Pump (Valve). The steering
wheel pump (valve) is mounted at the steering
console in the cab; the steering wheel is attached
to the pump shaft. When the steering wheel is
turned, the valve directs oil to the steering cylin-
ders to produce the desired amount of turning at
the front wheels.