52 15 061 Replacing both cushions for backrest width adjustment on left or right front seat

Necessary preliminary tasks: 

• Refer to: REMOVE THE REAR PANEL FROM THE FRONT SEAT 
• Completely drain air cushion for backrest width adjustment

Unclip valve body (1) from seat mechanism and feed out from backrest frame.

Installation note: 

Check the valve body (1) for correct fit in the backrest frame and spring wire.

Air hoses must not be kinked.

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Unlock quick connectors and detach air hoses (1).

Valve body for backrest width adjustment: 

1. Lumbar support left/right = hose clear, quick connector white

Installation note: 

Connections are coded against incorrect assembly.

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Detach spring (1) top and bottom.

Lever out clips.

Feed out air cushion (2) between spring wire and backrest frame.

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Installation note: 

Replace faulty clips.

Check air cushion for damage.

Insert air cushion without kinks.