Operation Manual

6
© 2002
Service and Maintenance 6.2 Fuel System
6.2.7 Clean/Replace/Vent Fuel
Pre-Filter, Filter Element
Clean:
z Close the fuel shut-off valve.
z Place fuel collection container beneath the
fuel pre-filter.
z Loosen the drain screw 5 and drain fuel/
water.
z Turn filter cartridge 2 and dirt trap 3
anticlockwise and remove.
z Turn dirt trap 3 anticlockwise and remove.
z Empty emulsion into the fuel collection
container and clean the dirt trap 3.
z Screw the filter cartridge 2 and dirt trap 3
together. Wet the filter cartridge with fuel,
wet the sealing surfaces 8 slightly with oil.
z Mount clockwise.
© 36648 0
Work may only be performed
on the fuel system with the
engine switched off.
No naked flames! Do not smoke!
Dispose of waste fuel in an
environmentally-friendly
manner.
z Open the fuel shut-off valve and bleed the
system.
z Check for leaks after starting the engine.
Replace:
z Replace defective filter cartridge 2.
z Clean any dirt from the filter carrier 1
sealing surface 8.
z Wet the filter cartridge 2 with fuel, wet the
sealing surfaces 8 slightly with oil.
z Mount the filter cartridge 2 and dirt trap 3
clockwise.
z Open fuel shut-off valve.
z Check for leaks and vent the system after
starting the engine.
Vent:
z Loosen the vent screw 7 slightly.
z Actuate the pump until fuel free from air
bubbles emerges.
z Tighten the vent screw.
A= connection possibility for:
Electrical connection for water/fuel level
sensor in the dirt trap