Maintenance and Service
Diesel engine
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– Unscrew the screw-on lid (1) of the fuel fine filter.
– Slightly pull the screw-on lid (1) including the filter insert from the filter housing and
let the fuel drain.
– Take off the screw-on lid including filter insert.
– Unclip the filter insert by lateral pressure at the lower edge of the filter insert.
– Replace the gasket of the screw-on cover.
– Cover evenly and completely the both sealings of the filter insert with the supplied
grease, as well as gasket and screw-on lid.
– Clip the new filter insert into the screw-on lid (1).
– Screw on and tighten the screw-on lid (1) including filter insert: tightening torque
25 Nm.
– Move the lever of the 3-way valve (3) to the vertical position (this closes the filter
bowl drain).
– Open the fuel connection to the intermediate tank. Move the longer service lever
(4) on the fuel supply control block (5) 45° forward (vertical position).
– Bleed the fuel system see page 315.
– Check the fuel system for leaks.
To exchange the fuel prefilter, proceed as follows:
– Park the vehicle and shut off engine.
– Shut off the fuel connection to the intermediate tank. Move the longer service lever
(4) on the fuel supply control block (5) 45° back to the SERVICE position. This pre-
vents fuel from entering the engine from the intermediate tank.
– Unscrew the screw-on lid (2) of the fuel prefilter.
– Take off the screw-on lid and the filter insert.
– Put in a new filter insert. Replace the gasket at the screw-on lid (2) and slightly
grease it.
– Screw on and tighten the screw-on lid (2) (tightening torque 25 Nm).
– Bleed the fuel system, see page 315
– Check the fuel system for leaks.
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