Maintenance and Service
Diesel engine
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7.1.3.1 Replacing/draining water of the fuel prefilter insert at the electric
pump
Exchange of the filter insert is required annually or when the intake resistance is too
high (the following icon is displayed on the R-Touch). (See Page 155)
(1) Fuel prefilter cover
(2) Drain screws
(3) Water collecting vessel
(4) Electric pump for diesel fuel
Replace the filter insert as follows:
– Shut down the diesel engine.
– Turn the both drain screws (2) out and drain the collected water and fuel from the
filter.
– Remove the lid (1) (wrench size 46) from the filter housing.
– Uninstall the old filter insert and exchange it for a new one with the ROPA
item no. 303016700.
– Dispose of the old filter insert in compliance with the local disposal regulations.
– Turn the both drain screws (2) again in the water collection vessel.
– Moisten the new sealing for the lid (1) lightly with oil.
– Install the lid (1) (tightening torque 40Nm) with the new sealing. Make sure that the
sealing is not damaged in the process.
– Bleed the fuel system See Page 376.
– Check the fuel system for leaks.
Draining water from the water collecting vessel
Draining of water collected is required when the water collecting vessel is full, freezing
threatens or the filter element is replaced.
– Unscrew drain screws (2) at the bottom of the water collecting vessel (3).
– Let the water drain.
– Retighten the drain screws.
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