Audi Workshop Service and Repair Manuals

Removing

• ‒ → Release quick-release fasteners -1- and -2- and detach front noise insulation.

Vehicles with air conditioner:

Note:

Before removing, mark direction of ribbed belt with chalk or felt-tipped pen. Running a used belt in the opposite direction could destroy it.

• ‒ → Slacken off bolts of tensioning roller for air-conditioner compressor ribbed belt -arrows-, slacken off ribbed belt and detach.

• ‒ Detach air conditioner compressor from bracket and secure to body with wire.

All models:

• ‒ → Remove right side air hose -arrows-.

• ‒ → Slacken bolt -1- of soundproofing cover over right side drive shaft at front.
• ‒ Unhook catch -2- and detach soundproofing cover.

• ‒ → Remove bracket for turbocharger -arrows-.

• ‒ → Detach oil return pipe from cylinder block -arrow-.
• ‒ Screw out turbocharger/exhaust manifold nut accessible from underneath.

• ‒ → Pull dipstick -1- out of guide tube.
• ‒ Unclipcaps.
• ‒ Remove nuts -arrows- and detach engine cover.
• ‒ Remove insulation lying below.
• ‒ Re-insert dipstick into guide tube.

• ‒ Unclipcaps.
• ‒ → Screw out bolts -arrows- and detach air cleaner cover.

• ‒ → Screw out bolts -arrows-.
• ‒ Remove air duct -1- and -2-.

• ‒ → Disconnect vent hose -2- from air cleaner housing.
• ‒ Unplug electrical connector -4- from air-mass meter.
• ‒ Detach EGR valve -N18 -3- from air cleaner housing.
• ‒ Detach wiring harness from air cleaner housing -arrow-.
• ‒ Detach air hose -5-.
• ‒ Screw out bolt -1-.
• ‒ Detach air cleaner housing.

Vehicles with manual gearbox:

• ‒ Remove EGR connecting pipe -Item26-29.

Vehicles with automatic gearbox:

• ‒ Remove EGR system cooler =>Page 26-48.

All models:

• ‒ Detach heat shield from exhaust manifold.

• ‒ → Detach hose -2- from charge pressure control vacuum unit.
• ‒ Slacken bolt -1- on holder of oil supply pipe.
• ‒ Unbolt oil supply pipe -3- from turbocharger.
• ‒ Screw out turbocharger/exhaust manifold nuts -arrows-.
• ‒ Screw out top turbocharger nuts.
• ‒ Remove turbocharger.

Installing

Install in reverse order, paying attention to the following:

Notes:

• ◆ Secure all hose connections with standard hose clamps:

=> Parts List

• ◆ Hose connections and hoses for charge-air system must be free from oil and grease before fitting.
• ◆ Always replace gaskets, sealing rings and self-locking nuts.
• ◆ Pay attention to installation position of exhaust manifold/turbocharger gasket.
• ◆ Fill turbocharger with engine oil at oil supply pipe connection.
• ◆ Charge-air system must be free from leaks.

• ‒ Install EGR system cooler =>Page 26-53.
• ‒ Perform stress-free alignment of exhaust system => Page 26-23.
• ‒ Check oil level => Page 17-33.

Tightening torques

    1)    Replace nuts

    2)    Coat thread and head resting surface with hot bolt paste.
        Hot bolt paste

=> Parts List