13 53 330 Replacing leakage oil lines (N57 D30 O 1)

Necessary preliminary tasks:

Read out the fault memory of the DDE control unit.
Switch off ignition.
Remove ACOUSTIC COVER at rear.
Remove sound insulation on injectors.

IMPORTANT: It is essential to adhere to conditions of absolute cleanliness when carrying out repair work on the fuel system.

Do not allow any dirt particles or foreign bodies to get into the system.
Use only fluff-free cloths.
Remove all traces of dirt contamination before removing lines or separate components.

IMPORTANT: You must protect the alternator against dirt contamination before carrying out any repair work on the fuel circuit.
Cover alternator with suitable materials.
Failure to comply with this procedure may result in an alternator malfunction.

Pull out retainer (1) upwards.

Detach connection of leakage oil line (2) upwards.

Fig 1: Pulling Out Retainer

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Installation note:

The entire leakage oil line must be replaced if seal (1) is damaged.

Fig 2: Identifying Oil Seal

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Detach leakage oil lines from the injectors. Release leakage oil line from rubber grommet (1).

Detach, thread out and remove leakage oil line from T-piece (2) of fuel line (near high pressure pump).

Fig 3: Identifying Oil Line Rubber Grommet And T-Piece

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Reassemble the vehicle.

Check fuel system for tightness.