3 - 56 Z-80/60 Part No. 88619June 2012Section 3 • Scheduled Maintenance ProceduresREV ECHECKLIST D PROCEDURESbaaD-5Replace the Drive Hub OilReplacing the drive hub oil is essential for goodmachine performance and service life. Failure toreplace the drive hub oil at yearly intervals maycause the machine to perform poorly andcontinued use may cause component damage.Drive Hubs:1 Select the drive hub to be serviced. Drive themachine until one of the two plugs is at thelowest point.2 Remove both plugs and drain the oil into asuitable container.3 Drive the machine until one plug is at the topand the other is at 90 degrees.a models with pipe plugsb models with o-ring plugs9 Remove the dial indicator and rotate theturntable 90°.10 Repeat steps 4 through 9 until the rotationbearing has been checked in at least fourequally spaced areas 90° apart.11 Lower the boom to the stowed position and turnthe machine off.12 Remove the dial indicator from the machine.
