Usage:
140G ( 72V ) Motor Graders Equipped with All Wheel Drive Modification
Description of Change: The pump signal pressure control valve for All Wheel Drive 140G Motor Graders, now contains a pressure reducing valve. This valve isolates the pump signal control from pressure varitions caused by changes in engine speed.
The pressure reducing valve helps maintain a constant pump signal pressure at all engine speeds. For any fixed position of the All Wheel Drive torque control lever the pump signal pressure remains constant. This helps provide improved control of front wheel torque and allows low front wheel torque at high engine speeds.
Adaptable To: The new 1Q5561 Control Valve Group (with the pressure reducing valve) directly replaces the former 1Q5321 Control Valve Group. The new control valve group is effective with All Wheel Drive 140G Motor Grader 72V11895.