Operation Manual

6
© 2002
6.2.3 Clean/Replace Fuel Pre-Filter,
Filter Element
6.2.4 Venting the Fuel System
with Preliminary Fuel Filter
● Press filter housing 5 with filter insert 3 and
sealing ring 6 against the filter console 7
and screw into place with clamping screw
1 (tightening torque 25 Nm).
Note: it must be possible to push the upper
seal 2 on filter insert 3 over the guide
bracket on filter console 7.
● Tighten drain plug 4.
● Open fuel stopcock.
● Check for leaks after the engine has been
started.
Replace:
● Replace defective filter insert 3.
Bleed:
● Place the fuel pan beneath the preliminary
fuel filter.
● Loosen drain plug 4 and observe the
draining fluid. When fuel instead of water
starts to flow, retighten drain plug 4.
● Check for leaks after the engine has been
started.
Vent:
● During initial commissioning, after
maintenance work or if the tank is run
empty it is essential to vent the fuel system.
● Set engine controller to stop position
● Place fuel collecting trough under the filter
housing 5 / pressure control valve 9.
● Open fuel stopcock, pressure control valve
9, vent screw 8
● Turn engine with starter (max. 20 sec.)
until fuel free from air bubbles escapes
from vent screw 8 and pressure holding
valve 9.
● Tighten vent screw 8 (tightening torque 15
Nm) and pressure control valve 9.
● Set engine controller to start position and
start
● When the engine has started check for
leaks
Clean:
● Close fuel stopcock.
● Place the fuel pan beneath the preliminary
fuel filter.
● Remove drain plug 4 and drain off fuel.
● Unscrew clamping screw 1, remove filter
housing 5 with filter insert 3.
● Clean sealing surface of the filter bracket
7 and filter insert housing 5 of any dirt.
● Insert new sealing ring 6 and filter insert
3 (change as necessary).
–Push the filter insert up to approx. 3 cm
over the edge of the housing onto the
guide in the filter housing 5.
Keep naked flames away when
working on the fuel system. Do
not smoke! Dispose of waste
fuel in an environmentally-
friendly manner!
!
© 25 801 0
© 30 084 0
Service and Maintenance 6.2 Fuel System