Traveling problemsProblem Cause ReferenceThe machine does not moveforward or backward.The hydraulic oil level is low.Hydraulic system - Generalinspection and repair -Hydraulic oilThe pump V-belt is loose. Main unit - Inspection andrepair of each section - V-beltThe unload valve is being pressed. Owner’s Manual for thismachineThe traveling pump lever does not operate.Main unit - Inspection andrepair of each section -Traveling cables and rodsThe hydraulic oil filter is clogged.Hydraulic system - Inspectionand repair of each section -Hydraulic oil filterThe charge pump has failed.Hydraulic system -Measurement methods -Charge circuitThe piston pump has failed.Hydraulic system -Measurement methods -Traveling circuitThe traveling motor has failed.Hydraulic system - Installationand removal of each section -Wheel motorPower is not sufficient totravel.(Other than because of theabove-mentioned causes)The engine speed is low.The engine does not work properly. Maintenance manual forengineThe parking brake is set.Main unit - Inspection andrepair of each section - Brakewires and rodsThe travel distance of the actuating pump lever issmall.Main unit - Inspection andrepair of each section -Traveling cables and rodsThe hydraulic oil is too cold. Owner’s Manual for thismachineThe hydraulic oil is dirty (foreign matter, water, orbubbles).Hydraulic system - Generalinspection and repair -Hydraulic oilThe viscosity of the hydraulic oil is incorrect.Hydraulic system - Generalinspection and repair -Hydraulic oilThe hydraulic oil cooler does not cool the oilsufficiently.Owner’s Manual for thismachineThe machine moves forwardor backward even when theforward or reverse pedal is notbeing depressed.The forward or reverse pedal is difficult to press.Main unit - Inspection andrepair of each section -Traveling cables and rodsThe traveling pump is not in the neutral position. Owner’s Manual for thismachineTroubleshootingPage 9-4 Traveling problems