305. Remove the fuel filter with a filter wrench(Fig. 31).21Figure 311. Drain valve 2. Fuel filter6. Clean the mounting surface.7. Lubricate the gasket on the new filter with cleanengine oil. Screw on the new filter by hand until thegasket contacts the housing. Then tighten it another1/2 turn.8. Open the fuel valve on the bottom of the fuel tank(Fig. 33).9. Bleed the fuel system; refer to Bleeding the FuelSystem, page 30.10. Close the rear access cover.11. Start the engine and check for leaks.Bleeding the Fuel SystemBleeding the air from the fuel system in any of thefollowing situations:• Initial start up of a new traction unit or a traction unitthat has been stored.• After the engine has ceased running due to lack offuel.• After maintenance has been performed on the fuelsystem components.1. Open the rear access cover; refer to Opening the RearAccess Cover, page 25.2. Place a drain pan under the fuel filter to catch spills.3. Open the bleed screw on top of the fuel filter to fill thebowl with fuel (Fig. 32).m–370812Figure 321. Fuel filter 2. Bleed screw4. Close the bleed screw when fuel comes out in a steadystream.5. On left side of the engine, locate the air vent plug ontop of the fuel injection pump and connect a hose to it,leading to a drain pan.6. Open the vent plug and crank the engine until fuelcomes out a steady stream.7. Close the vent plug.8. Close the rear access cover.Draining the Fuel TankDangerIn certain conditions, fuel is extremely flammableand highly explosive. A fire or explosion fromgasoline can burn you and others and can damageproperty.• Drain fuel from the fuel tank when the engine iscold. Do this outdoors in an open area. Wipe upany spills.• Never smoke when draining gasoline, and stayaway from an open flame or where a spark mayignite the fumes.1. Park the traction unit on a level surface, to ensure thatthe fuel tanks drain completely.2. Lower the loader arms and stop the engine. Removethe key.