11 23 010 Removing and installing/replacing vibration damper (N47 D20 O1)

Special tools required: 

• 11 6 480
• 11 7 221
• 11 7 222
• 11 7 223

Necessary preliminary work: 

• Remove acoustic cover. See 13..... REMOVE ACOUSTIC COVER (N47 D20 O/T1) .
• Remove acoustic cover at front for belt drive, only F10, F11.
• Remove DRIVE BELT FOR ALTERNATOR .

Using a suitable tool, remove the protective cap (1) from deflecting element (2).

Release screw (3).

Tightening torque: 11 00 4AZ .

Remove deflecting element (2).

Fig 1: Identifying Protective Cap, Deflecting Element And Screw

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Assemble special tool 11 7 221 with special tool 11 7 222 and 11 7 223

Fig 2: Identifying Special Tool (11 7 221), (11 7 222) And (11 7 223)

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Screw special tool 11 7 221 with special tool 11 7 223 into receptacle of the guide pulley.

Secure special tool 11 7 221 vibration damper (1).

Fig 3: Turning Vibration Damper Using Special Tool (11 7 221)

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Loosen bolts (1) on the vibration absorber (2).

Installation note: 

Replace RADIAL SHAFT SEAL  at front.

Fig 4: Identifying Bolts On Vibration Absorber

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Installation note: 

Position vibration damper as illustrated when refitting.

Fig 5: Locating Vibration Damper

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Installation note: 

Secure the special tool 11 7 221 again in the area of the vibration damper to tighten the screws.

Tighten screws crosswise.

Fig 6: Identifying Vibration Damper And Special Tool (11 7 221)

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Undo bolts (1) on vibration damper (2).

Remove special tool 11 7 221 in the area of the vibration damper (1).

Remove vibration damper.

Tightening torque: 11 23 1AZ .

Fig 7: Identifying Vibration Damper Bolts

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Assemble engine.