34 31 181 Removing and installing/replacing expansion tank for hydraulic brake system

Necessary preliminary tasks: 

• Read and comply with GENERAL INFORMATION .
• Remove the COWL PANEL COVER .
• Extract brake fluid out of expansion tank.

Attention!

Do not reuse drawn out brake fluid.

Removal: 

Unfasten plug connection (1) and disconnect.

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Pull off supply hose (1) of clutch hydraulic system.

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Release screw (1) and lift off expansion tank vertically in upward direction.

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Installation: 

Attention! 

Check rubber plug in tandem brake master cylinder for damage and replace if necessary.

Push expansion tank (1) vertically onto the tandem brake master cylinder.

Fit fastening bolt and tighten.

Tightening torque, refer to: 34 31 2AZ .

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Fit supply hose (1) of clutch hydraulic system and push on to the expansion tank.

Attention! 

Make absolutely sure the supply hose is positioned correctly on the expansion tank!

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Position plug connection (1) and snap into place.

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Required follow-up work: 

• Install the STRUT BRACE (REAR) AT LEFT
• Install the COWL PANEL COVER .
• Top up brake fluid.

Attention! 

For right-hand drive vehicles only: 

Air bubbles may remain in the area at the rear when filling the expansion tank!

A test drive is mandatory after having completed the repair!

Afterwards, the brake fluid level in the expansion tank will need to be checked!

If the brake fluid level has dropped, it will need to be topped up again until the maximum mark!