11 65 164 Removing and installing/replacing both blow-off valves (N54)

Necessary preliminary tasks:

Remove INTAKE SILENCER HOUSING .

NOTE:

Only when replacing the blow-off valves.

There is one less blow-off valve for the charge air duct. Therefore, the charge air duct must also be replaced with two connections for the blow-off valves.

Conversion of the charge air duct is described at the end of the instructions.

Carefully detach vacuum hoses (1) and lay to one side.

Fig 1: Identifying Vacuum Hoses

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Release locks (1 and 4) by turning approx. 45° in direction of arrow.

Remove both blow-off valves (2 and 3) toward the top.

Fig 2: Identifying Locks And Blow-Off Valves

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Insert blow-off valve (1) into charge air duct connection.

Installation note:

The blow-off valve (1) must snap audibly into place!

Turn the lock (2) in the direction of the arrow until the marks (3) align.

Fig 3: Inserting Blow-Off Valve Into Charge Air Duct Connection

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NOTE:

Only when replacing the blow-off valve.

If the Y-pipe (3) is replaced with two blow- off valves (2), the charge air duct (1) must also be replaced with two connections for the blow-off valves. The vacuum hoses must be adapted.

Fig 4: Identifying Blow-Off Valves, Charge Air Duct And Y-Pipe

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Install the charge air duct (1) with a connection for the blow-off valve.

Install the blow-off pipe (2) with a blow-off valve. A vacuum line with a T-piece is no longer needed. Instead, install a new vacuum line (3) between the blow-off valve and the electric changeover valve or intake plenum.

Fig 5: Identifying Charge Air Duct, Blow-Off Pipe And Vacuum Line

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Assemble engine.