Service and Maintenance 6.2 Fuel System During initial commissioning, after maintenance work or if the tank is run empty it is essential to vent the fuel system. Set engine controller to stop position Place fuel collecting trough under the filter housing 5 / pressure control valve 9. Open fuel stopcock, pressure control valve 9, vent screw 8 Turn engine with starter (max. 20 sec.) until fuel free from air bubbles escapes from vent screw 8 and pressure holding valve 9. Tighten vent screw 8 (tightening torque 15 Nm) and pressure control valve 9. Set engine controller to start position and start When the engine has started check for leaks Keep naked flames away when working on the fuel system.
Do not smoke! Dispose of waste fuel in an environmentally- friendly manner! ! 6.2.3 Clean/Replace Fuel Pre-Filter, Filter Element © 25 801 0 © 30 084 0 Press filter housing 5 with filter insert 3 and sealing ring 6 against the filter console 7 and screw into place with clamping screw 1 (tightening torque 25 Nm). Note: it must be possible to push the upper seal 2 on filter insert 3 over the guide bracket on filter console 7. Tighten drain plug 4. Open fuel stopcock. Check for leaks after the engine has been started. Replace: Replace defective filter insert 3. Clean: Close fuel stopcock. Place the fuel pan beneath the preliminary fuel filter. Remove drain plug 4 and drain off fuel.
Unscrew clamping screw 1, remove filter housing 5 with filter insert 3. Clean sealing surface of the filter bracket 7 and filter insert housing 5 of any dirt. Insert new sealing ring 6 and filter insert 3 (change as necessary). –Push the filter insert up to approx. 3 cm over the edge of the housing onto the guide in the filter housing 5. © 2002 6 © 25 801 0 © 25 801 0