51 21 140 Removing and installing/replacing complete lock cylinder

Remove plate (1).

Fig 1: Removing Plate

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Installation: 

Fit new plate (1).

Fig 2: Releasing Door Handle Screw

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Release screw (1).

Removing cover (1) on outside handle:

Fig 3: Removing Outside Handle Cover

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1. Pull cover (1) approx. 1-2 mm towards rear.
2. Detach cover (1) with lock barrel (2) towards outside.

Remove catches (1) and detach cover (2) from lock cylinder (3).

Fig 4: Removing Lock Cylinder Cover

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Installation: 

Catches (1) on cover (2) must not be damaged.

3 Lock cylinder

Fig 5: Use Care Not To Damage Lock Cylinder Cover

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Installation: 

Notch (2) on paddle support (1) must be secured in catch (3).

Fig 6: Securing Notch On Paddle Support

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Only in this position will installation of the lock barrel be guaranteed.