ENGLISCH • Kapitel 6 • Seite 61
6
© 2002
6.2 Fuel System Service and Maintenance
6.2.5 Clean/Replace Fuel Pre-Filter,
Filter Element
Clean/Replace:
z Close the fuel shut-off valve.
z Place fuel collection container beneath the
fuel pre-filter.
z Loosen the drain screw 7+9 and drain fuel.
z Turn the filter element housing 4 with gasket
3 and filter element 3 anti-clockwise and
remove.
z Clean any dirt from the sealing face of the
filter carrier and filter element housing 4
and sludge chamber 5 and filter element
(replace if necessary).
z Insert new round sealing rings 2+3+6.
z Screw in filter element housing 4 and filter
element (max. torque 25
–5
Nm).
6.2.6 Vent Fuel System with Fuel
Pre-Filter
Drain Water:
z Place fuel collection container beneath the
fuel pre-filter.
z Loosen drain screw 9 and watch the
draining liquid, tighten the drain screw 9
when water changes to fuel.
z Bleed system
z Check for leaks after starting the engine.
Vent:
z In the event of re-commissioning, following
maintenance work or if the tank has been
run empty, the fuel system must be vented.
z Bring engine regulator into stop position.
z Position fuel collection container beneath
filter housing 9 / pressure maintenance
valve 9.
z Open fuel shut-off valve, pressure
maintenance valve 9, vent screw 10.
z Vent system, turn over engine with the
starter (max. 20 sec.) up to vent screw 10
and pressure retention valve 9.
z Firmly tighten vent screw 10 (tightening
torque 25
-5
Nm) and pressure maintenance
valve 9.
z Bring engine regulator into start position
and start.
z Check for leaks after starting the engine.
z Tighten the drain screw 7+9
z Open fuel shut-off valve.
z Bleed system
z Check for leaks after starting the engine.
Keep naked flames away when
working on the fuel system. Do
not smoke!
Dispose of wastefuel in an
environmentally-friendly
manner!
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9682en_K06.p65 17.11.2008, 12:2061
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