Maintenance – Engine
647
22.5.3 Replacing the fuel filter insert
Fig. 570
• Open the filler cap to prevent excess pressure in the fuel tank.
• Close the shut-off valve on the fuel pre-filter.
• Unscrew the fuel filter by using a strap wrench.
• Clean the sealing surface of the filter socket.
• Wet the seal of the new fuel filter with diesel and screw on the fuel filter.
• Tighten the fuel filter according to the imprinted instructions.
• Open the shut-off valve on the fuel pre-filter.
• Vent the fuel system.
22.5.4 Venting the fuel system
The fuel system may have to be vented,
– after the filter element on the fuel prefilter was changed.
– after prolonged shutdown of the machine.
– after filling the previously drained fuel system.
See also the "engine manufacturer’s" operating instructions included with the delivery
(chapter on venting the fuel system).
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