34 31 181 Removing And Installing/Replacing Expansion Tank For Hydraulic Brake Actuation

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NOTE: Read and comply with General Information. Refer to 34 00 ... GENERAL INFORMATION . Observe safety instructions on raising the vehicle. Refer to 00..... LIFTING VEHICLE WITH A LIFTING PLATFORM .

Remove microfilter (1).

Fig 1: Removing Microfilter

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Suck the brake fluid out of the expansion tank.

IMPORTANT: Do not reuse drawn out brake fluid. Use suction bottle exclusively to draw off brake fluid.

Fig 2: Identifying Expansion Tank

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Disconnect plug connection (1). Release hose clip (2) and detach supply hose (3) of precharging pump from expansion tank.

IMPORTANT: Supply hose must be secured in vertical position so that no fluid emerges.

Press retaining tabs (4) on left and right outwards and pull off expansion tank (5) vertically upwards.

Fig 3: Identifying Expansion Tank, Retaining Tabs And Hose Pipe

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

Push the expansion tank vertically onto the master brake cylinder.

Fig 4: Installing Expansion Tank Onto Master Brake Cylinder

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