6.2 Fuel System
6.2.5 Bleed Fuel System
without Fuel Pre-filter
Service and Maintenance
6.2.6 Clean/Replace Fuel Pre-Filter,
Filter Element
• Bring engine regulator into stop position.
• Open fuel shut-off valve.
• Loosen pressure maintenance valve
9.
Collect any escaping fuel and dispose
of
this
in
an environmentally-friendly manner.
• Turn engineoverwith starter(max. 20 sec.)
until bubble-freefuel escapesfrom pressure
maintenance valve
9.
• Tighten pressure maintenance valve
9.
• Bring engine regulator into start position
and start.
• Check for leaks after starting the engine.
A
Keep naked flames away when
.•....
..............
,
.•.
,'.,
...••.•••......•......•.........
,.
working on the fuel system.
Do
• not smoke!
III
....
Dispose
of
used fuel
in
an envi-
ronmentallv-friendlv manner!
Clean/Replace:
• Close the fuel shut-off valve.
• Place fuel collection container beneath the
fuel pre-filter.
• Loosen the drain screw 7+9 and drain fuel.
• Turn thefilter elementhousing 4with gasket
3 and filter element 3 anti-clockwise and
remove.
• 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).
• Insert new round sealing rings 2+3+6.
• Screw
in
filter element housing 4 and filter
element (max. torque 25
-5
Nm).
• Tighten the drain screw 7+9
• Open fuel shut-off valve.
• Bleed system
• Check for leaks after starting the engine.
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o
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N
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