11 65 010 Removing and installing/replacing pressure accumulator (N74)

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Necessary preliminary tasks:

Remove acoustic cover

Disconnect plug connection at charging pressure sensors (1).

Release cable strap holder (2) at pressure accumulator.

Fig 1: Identifying Charging Pressure Sensors And Cable Strap Holder

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Unclip vacuum line for brake servo at pressure accumulator.

Disconnect vacuum lines (1) on electro-pneumatic pressure converter (EPDW) OUT for wastegate valves.

Pull off pressure accumulator (2) on left and right upwards in the direction of the arrow.

Fig 2: Identifying Pressure Accumulator And Vacuum Lines

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Disconnect vacuum line (1) to vacuum pump at pressure accumulator on left and right.

Installation note:

If necessary, modify the electro-pneumatic pressure converter (EPDW).

Connections (2 and 3) at vacuum container to the pressure converter connector (VAC).

Fig 3: Identifying Vacuum Line To Electropneumatic Pressure Converter Connector And T-Piece

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Installation note:

Check installation position of left-hand vacuum line.

Make sure rubber grommets (1) are not damaged and are in the right position.

Fig 4: Identifying Rubber Grommets

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Check vacuum connections for correct routing.

Check vacuum system for leaks.

Assemble engine.