11 61 368 Removing and Installing/Replacing Rear Left Charge-Air Duct

11 61 368 Removing and installing/replacing rear left charge-air duct (N54, N54T)







Necessary preliminary tasks:
- Switch off ignition.
- Remove intake silencer housing.







Only for E71 and only when replacing the charge air duct.
There is one less blow-off valve for the charge air duct. Therefore, the air duct, too, must be replaced with two blow-off valves.
Conversion of the charge air duct is described at the end of the instructions.







IMPORTANT:
Charge air hoses with clamp fastenings must be installed dry and free from grease.
If charge-air hoses with clamp fastenings are not installed dry and free from grease, this may result in turbocharger failure.







Loosen hose clamp.
Tightening torque 13 71 6AZ.

Installation note:
Install charge-air hoses dry and free from grease.

Detach charge-air hose (1) from charge-air duct (2).







Release snap fasteners (1) by turning lock through 90°.
Detach recirculated-air hoses (2) and lay to one side.







Installation note:
Bring lock (1) back 90° into installation position.
Pay attention to markings.
Recirculated-air hoses must snap audibly into place.







Unlock connector (1) and remove.







IMPORTANT:
Coat sealing rings of snap fasteners with lubricant.
Pressure pipes cannot be fitted without lubricant.







Release screw.
Tightening torque 13 71 4AZ.
Unlock snap fastener (1).
Detach charge-air duct (2) from throttle body and remove.

Installation note:
Coat sealing ring of snap fastener with lubricant.
Charge-air duct (2) must snap audibly into place.







Only for E71 and only when replacing the charge air duct.
If the charge air duct (1) is renewed, the Y-pipe (3) must be renewed with two blow-off valves (2). The vacuum hoses must be adapted.







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.







Assemble engine.
Read out the fault memory of the DME control unit.

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