April 2016 Service ManualChecklist A ProceduresPart No. 139234 Z-34/22 Bi-Energy 25A-11Replace the Drive Hub OilDrive hub specifications require that this one-timeprocedure be performed after the first 150 hours ofusage. After this interval, refer to the maintenancechecklist for continued scheduled maintenance.Replacing the drive hub oil is essential for goodmachine performance and service life. Failure toreplace the drive hub oil may cause the machine toperform poorly and continued use may causecomponent damage.1 Select the drive hub to be serviced. Drive themachine until one of the two plugs is at thelowest point.2 Remove the plugs and drain the oil into asuitable container.3 Drive the machine until one of the two plugs isat the highest point.1 drive hub plugs4 Fill the hub until the oil level is even with thebottom of the lowest plug hole. Refer toSpecifications, Machine Specifications.5 Install the plugs into the drive hub.6 Repeat this procedure for each drive hub.
