Hydraulic SystemMaintenanceReplacing the Hydraulic FilterService Interval: After the first 8 hoursEvery 200 hoursImportant: Do not substitute an automotive oilfilter or severe hydraulic system damage may result.1. Position traction unit on a level surface.2. Lower the loader arms, stop the engine, and removethe key.3. Open the rear access cover.4. Place a drain pan under the filter (Figure 55).Figure 551. Hydraulic filter5. Remove the old filter (Figure 55) and wipe thesurface of the filter adapter gasket clean.6. Apply a thin coat hydraulic fluid to the rubber gasketon the replacement filter.7. Install the replacement hydraulic filter onto the filteradapter (Figure 55). Tighten it clockwise until therubber gasket contacts the filter adapter, then tightenthe filter an additional 3/4 turn.8. Clean up any spilled fluid.9. Start the engine and let it run for about two minutesto purge air from the system.10. Stop the engine and check for leaks.Hydraulic fluid escaping under pressure canpenetrate skin and cause injury. Fluid injectedinto the skin must be surgically removed withina few hours by a doctor familiar with this formof injury or gangrene may result.• Keep your body and hands away from pinhole leaks or nozzles that eject high pressurehydraulic fluid.• Use cardboard or paper to find hydraulicleaks, never use your hands.11. Check the fluid level in the hydraulic tank (refer toChecking the Hydraulic Fluid in , page ) and addfluid to raise the level to mark on dipstick. Do notover fill the tank.12. Close the rear access cover.Changing the Hydraulic FluidService Interval: Every 400 hours/Yearly (whichevercomes first)1. Position the traction unit on a level surface.2. Open the hood.3. Install the cylinder lock, stop the engine, and removethe key.4. Allow the traction unit to cool completely.5. Remove the hydraulic tank cap and dipstick(Figure 56).Note: The filler cap is behind the front screen. Ifyou want to improve your access to it, remove thescreen.Figure 561. Filler neck 2. Dip stick43