Wheel System, Traction248Service Manual – Advance 7765 / Nilfisk CR1500Forward/Reverse Controls – GM Engines Before s/n 1000034942The foot pedalactuates theForward/ReverseCable which rotatesthe HydrostatArm Plate. TheHydrostat Arm Plateis fastened to theTransmission Armwhich pivots theswash plate insideof the Drive Pumpto control themachine directionand speed.The CenteringControl returns thefoot pedal, Forward/Reverse Cable,Hydrostat Arm Plateand TransmissionArm to the neutralposition whenthe foot pedal isreleased.Forward/Reverse Controls – GM Engines After s/n 1000034942The foot pedalactuates the Forward/Reverse Cable whichconnects to theHydroback. TheHydroback transfersthe Forward/ReverseCable motion to thePintle Arm Weldmentwhich pivots theswash plate insideof the Drive Pump tocontrol the machinedirection and speed.The Hydrobackreturns the footpedal, Forward/Reverse Cable andPintle Arm Weldment tothe neutral positionwhen the foot pedal isreleased.HydrostatArm PlateTransmissionArmForward/ReverseCableDrivePumpCenteringControlForward/ReverseCableHydrobackDrivePumpPintle ArmWeldment
