Wheel System, Traction256Service Manual – Advance 7765 / Nilfisk CR1500Rear Wheel Motor in Forward or ReverseWhen the engine is running and the foot pedal is moved to either the forward or reverse position, the DrivePump sends oil to the Rear Wheel Motor to drive the machine in the corresponding direction. The swash platein the Drive Pump regulates the direction and volume of oil the Drive Pump sends to the Rear Wheel Motor tocontrol the machine direction and speed.The direction in which the foot pedal moves the swash plate in the Drive Pump controls the machinedirection. The distance to which the foot pedal moves the swash plate in the Drive Pump controls the machinespeed.The Check Valves control the oil flow to the Drive Pump charge circuits. The case drain from the Rear WheelMotor goes to the Return Block.Tow(bypass)ValveReliefValveReliefValveCheckValveCheckValve15.4 CIR 1.24 CIRReturn BlockVonbergCheck Valve120 psi2200RPMRearWheelMotorDrivePumpFrom MainBroom MotorTow(bypass)ValveReliefValveReliefValveCheckValveCheckValve15.4 CIR 1.24 CIRReturn BlockVonbergCheck Valve120 psi2200RPMRearWheelMotorDrivePumpFrom MainBroom Motor
