11 23 010 Removing and installing/renewing vibration damper (N55 hybrid)

Special tools required:

WARNING: Compliance with the following points is mandatory before beginning work:

Necessary preliminary work:

NOTE: Insert tool 2 318 439 in starter opening.
Make sure locking pin (1) is correctly seated.

Fig 1: Identifying Insert Tool (2 318 439)

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Gearing (1) of tool 2 318 439 must engage in flywheel gearing (2).

If this is not possible, slows turn the crankshaft in the direction in which the engine runs until the gearing engages.

Fig 2: Identifying Flywheel Gear

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Tool 2 318 439 must be completely in contact with the crankshaft housing.

Tighten screw (2).

Fig 3: Identifying Insert Tool (2 318 439)

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IMPORTANT: Do not release central bolt.
If the central bolt is accidentally loosened, the timing must be readjusted.

Fig 4: Identifying Central Bolt

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Slightly release screws (1 to 8) (do not screw out).

Fig 5: Vibration Damper Bolts Tightening/Loosening Sequence (N55)

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Remove drive belt.

NOTE: Mark the direction of travel of the drive belt if it is to be reused.

Turn belt tensioner (1) in direction of arrow until bore hole (2) is aligned with belt tensioner and crankcase.

Hold belt tensioner (1) under tension.

Secure with special tool 11 0 390 .

Fig 6: Turning Belt Tensioner

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Turn belt tensioner (3) in direction of arrow until bore hole (4) is aligned with belt tensioner and crankcase.

Hold belt tensioner (3) under tension.

Secure with special tool 11 0 390 .

Remove drive belt (5).

Screw out screws (1 to 8).

Remove vibration damper (1).

Installation note:

Install vibration damper.

Join screws on vibration damper with 5 Nm.

Install drive belt.

Tighten screws on vibration damper

Tightening torque 11 23 1AZ.

Fig 7: Vibration Damper Bolts Tightening/Loosening Sequence (N55)

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Assemble engine.