6.2 Fuel system Care and maintenance work Regulations for working on the fuel system Because of the high production accu- racy of the system, utmost cleanliness must be observed. The fuel system must be tight and closed. Make a visu- al inspection for leaks / damage to the system. Clean and dry the engine and the engine compartment thoroughly before starting work. Cover parts of the engine compartment from which dirt could be loosened with a new, clean foil. Work on the fuel system may only be carried out in an absolutely clean environment. Air contamination such as dirt, dust, moisture etc. must be avoided. Pay attention to utmost cleanliness when refuelling and working on the fuel system.
Carefully clean the area around the affected parts. Blow damp areas dry with compressed air. Obser- ve the safety regulations and national specifications for handling fuels. Dis- pose of leaking fuel and filter elements properly. Do not allow fuel to seep into floor. After all work on the fuel system, the system should be vented, a trial run performed and the tightness chek- ked. Changing the fuel filter cartridge 6 Additional venting of the fuel system by a 5 minute trial run at idle speed or on low load is absolutely essential. The filter cartridge may never be pre- filled.
There is a danger of soiling Additional regulations for DEUTZ pump line nozzle z Remove the clips if an anti-rotation lock is fit- ted. z Loosen and unscrew filter cartridge with tool (order no. 170050) . z Collect fuel which runs out. z Clean the sealing surface of the filter sup- port with a lint-free, clean cloth. z Oil the gasket of the new DEUTZ original fil- ter cartridge lightly. z Screw on the new filter cartridge by hand and tighten a further half a turn. z If necessary, fix the clips of the anti-rotation lock. z Vent the fuel system, see ( 32 ) . Mortal danger! Do not work on the fuel system while the engine is running. The system is under high pressure!
Do not get near to a leak in the high pres- sure system because the fuel jet can cause severe injury! Wait 30 seconds after switching off the engine before working on the fuel system. In case of leaks in the fuel system, contact your DEUTZ partner immediately. 31