51
ENGLISH
Fuel filter replacement
Only proceed with the engine stopped and at low temperature, in
order to avoid the risk of burning.
Only use filters with the following specifications (see the
FREQUENCY chapter):
- degree of filtering < 12 μm
- filtering efficiency 99.5% (ß > 200).
Place a container for collecting the diesel under the filter support
(1).
Remove the filter (2) by unscrewing it from its relative support.
Replace the filter element and the O-ring seal contained inside the
filter (2).
Carefully clean the surfaces of the support (1) in contact with the
O-ring seal.
Smear the O-ring seal of the new filter with oil.
Manually tighten the new filter (2) onto the support (1) until it
comes into contact with the gasket. Additionally tighten it using a
specific tool to a torque of 20 ± 2 Nm.
After the fuel filter (2) has been replaced it is possible that air bubbles
get trapped inside the fuel supply circuit.
Bleed residual air from the fuel filter (2) by loosing the vent plug
connecting it to a suitable container by a transparent flexible hose.
With the hand pump of the fuel pre-filter pump until fuel
completely free of air bubbles flows from the vent plug.
Tighten the vent plug to prescribed torque.
Start the engine and allow it to run at minimum for a few minutes
to expel any remaining air.
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