11 23 010 Removing and installing/replacing vibration damper (N57 Diesel)

Special tools required:

Necessary preliminary tasks:

Remove ACOUSTIC COVER .
Remove front ACOUSTIC COVER (F06, F10, F11, F12, F13, F30, F31 only).
Remove FAN COWL with electric fan.
Remove DRIVE BELT for alternator in the area of the vibration damper.

NOTE: Drive belt shown removed for greater clarity.

Using a suitable tool, lever off protective cap (1) from deflecting element (2).

Release screw (3).

Tightening torque 11 00 4AZ .

Remove deflection pulley (2).

Fig 1: Identifying Protective Cap, Deflecting Element/Deflection Pulley, And Screw

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Assemble special tool 11 7 221 with special tool 11 7 222 .

Fig 2: Assembling Special Tool (11 7 221) With Special Tool (11 7 222)

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Screw special tool 11 7 221 with special tool 11 7 222 into receptacle of the guide pulley.

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

NOTE: If necessary, use special tool 11 7 221 to turn the vibration damper in the direction of travel until the special tool 11 6 480 audibly clicks into place on the vibration damper.

Fig 3: Securing Special Tools

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

Fig 4: Identifying Vibration Damper Bolts And Special Tool

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

Remove vibration damper.

Tightening torque 11 23 1AZ .

Installation note:

Replace screws.

Replace RADIAL SHAFT SEAL at front.

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

Tighten screws crosswise.

Fig 5: Identifying Vibration Damper And Special Tool

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Installation note:

Position vibration damper as illustrated when refitting.

Fig 6: Positioning Vibration Damper

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Assemble engine.

IMPORTANT: Do not run engine without ribbed drive belt.
Risk of damage! to vibration damper.