REV DSection 3 • Scheduled Maintenance ProceduresPart No. 82259 GS-3384 3 - 53September 2005D-6Replace the Hydraulic TankReturn FilterReplacement of the hydraulic tank return filter isessential for good machine performance andservice life. A dirty or clogged filter may cause themachine to perform poorly and continued use maycause component damage. Extremely dirtyconditions may require that the filter be replacedmore often.Bodily injury hazard. Beware ofhot oil. Contact with hot oil maycause severe burns.The hydraulic filter is mounted onthe function manifold next to thehydraulic power unit.1 Open the function manifold tray door.2 Locate the hydraulic tank return filter locatedbehind the ladder.3 Remove the filter with an oil filter wrench. Cleanthe area where the hydraulic oil filter meets thefilter head.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil to squirtor spray.CHECKLIST D PROCEDURES4 Apply a thin layer of oil to the new oil filtergasket.5 Install the new filter and tighten it securely byhand.6 Use a permanent ink marker to write the dateand number of hours from the hour meter onthe filter.7 Clean up any oil that may have spilled duringthe replacement procedure.8 Turn the key switch to ground controls and pullout the red Emergency Stop button to the ONposition at both the ground and platformcontrols.9 Start the engine from the ground controls.10 Hold the function enable toggle switch in the updirection and activate the platform up function.11 Inspect the filter and related components tobe sure that there are no leaks.
