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Renewing and adjusting vacuum unit for turbocharger - vehicles with engine code BLS from model year 2008 onwards only > < Turbocharger - exploded view

A3 Mk2

Removing and installing turbocharger
Removing and installing turbocharger
Removing
  Caution
If the turbocharger has suffered mechanical damage (e.g. damaged compressor wheel), it is not sufficient merely to fit a new turbocharger. The following work must be performed in order to avoid further damage:
t  Check air cleaner housing, air filter element and air intake hoses for dirt and foreign particles.
t  Check the entire charge air system (including the charge air cooler) for foreign matter.
t  If foreign matter is found in the charge air system, clean all relevant ducts and hoses and renew charge air cooler if necessary.
–  Remove exhaust gas recirculation cooler → Chapter.
   
–  Unbolt heat shield on exhaust manifold (left-side) -arrows-.
  A26-10201
–  Remove bolts -arrows-.
–  Guide out turbocharger with exhaust manifold through wheel housing (right-side) and at the same time swivel engine/gearbox assembly slightly forwards.
Installing
Installation is carried out in the reverse order; note the following:
  Note
t  Renew gaskets, seals and self-locking nuts.
t  Fill turbocharger with engine oil at connection for oil supply pipe.
t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
–  Remove exhaust gas recirculation cooler → Chapter.
–  Install exhaust system and align it free of stress → Chapter.
–  Install air pipes/hoses with plug-in connectors → Chapter.
–  Check oil level → Booklet808.
  Note
After installing turbocharger, allow engine to idle for approx. 1 minute and do not rev up immediately to ensure turbocharger is supplied with oil.
Tightening torques
  A21-10063
ComponentNm
Exhaust manifold/turbocharger to cylinder head25 1)
Heat shield to exhaust manifold/turbocharger20 1)
l  1) Renew nuts.

   

Renewing and adjusting vacuum unit for turbocharger - vehicles with engine code BLS from model year 2008 onwards only > < Turbocharger - exploded view