Genuine Audi 100 Turbocharger

Audi 100 Turbocharger Parts and Q&A

• Turbocharger
  034-145-701-B
  Q: What are the steps involved in fitting and removing a turbocharger on Audi 100?

  A:

  Turbochargers are installed on engine codes 1Z, AHU, ABP, AAT, and AEL and are located directly to the Exhaust Manifold and lubricated by supplying an oil supply pipe between the engine oil filter mounting and the return oil passing to the sump via a return pipe connected to the cylinder block. It also has an integrated wastegate valve and vacuum actuator diaphragm that allows the unit to regulate boost pressure. Internal parts are rotating at a very fast rate, and they are also sensitive to contamination, hence, cleaning the space around the oil pipe unions before disconnection to prevent the ingress of dirt, storing dismantled parts in closed containers, and covering air inlet ducts to keep the space free of debris is always imperative. The removal procedure comprises of handbrake, jacking up of the vehicle, disconnecting the undershield, disconnecting the exhaust downpipe, unscrewing the oil supply pipe union nut, disconnection of the oil supply pipe, disconnection of the air supply hose, unbolting of the oil return pipe, disconnection of the vacuum line and unscrewing the mounting nuts of the turbocharger. To refit, clean the mating surfaces, and apply high-melting point grease on the mounting studs, tighten the nuts to the recommended torque, reconnect the vacuum lines, refit the oil return pipe using new gaskets or O-rings, reconnect the air supply hose, squirt fresh oil into the turbocharger aperture, and refit the oil supply pipe, reconnect the exhaust downpipe, refit the undershield and lower the vehicle. When initially starting the engine, it should be left to run on idle after a few minutes to build pressure on oil.