Renewing gasket between bi-turbo turbine housings: Audi 2.0 TDI (CFCA, CKUB, CKUC, CSNA)

🧭 Before you start

Fits: VW Transporter T6 (7F), VW Transporter T6 (7E)

• Renewed: seals, studs as required

Don't miss

• When pulling the connecting pipes apart, ATE brake cylinder paste ETKA (electronic parts catalogue) can be used as a »lubricant«.

🔧 Engine codes this applies to

📐 31 workshop diagrams for CFCA

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Carefully release locking plate (4) on regulating rod (2) of vacuum unit with regulating flap potentiometer G584 from the bolts with sealing paint (1) using a screwdriver or similar, and remove the locking plate.
2. Loosen outer nut (5) on the regulating rod (2) and then unscrew the nut from regulating rod. Do not turn inner nut (3)! The regulating rod is now ready to be pulled out of the guide piece when the two output stages are pulled apart at a later stage.
3. Remove bolt (1).
4. Remove oil supply line (2).
5. Unscrew bolts (1).

6. Remove oil return line (2).
7. Unscrew nuts (1) on flange between stages.
8. Carefully pull apart both output stages (arrows). [Note: When pulling the connecting pipes apart, ATE brake cylinder paste electronic parts catalogue can be used as a »lubricant«.] [Note: Renew seals and self-locking nuts.Check thoroughly whether all sealing plugs have been removed.Clean sealing surfaces.Always screw in lines initially, and then tighten them to specified torque.When fitting the connecting pipes, ATE brake cylinder paste electronic parts catalogue can be used as a »lubricant«.Reapply sealing lack to all positions that were broken open for removal.When assembling turbochargers, it is essential that the correct repair set Electronic Parts Catalogue is used.Renew studs as required.] [Note: Use a commercially available stud extractor to remove studs from flange.Note the installation location of the studs.]
9. ⚠ When pulling both output stages apart, ensure that no pressure is exerted on the linkage or the pressure actuator.When carrying the turbocharger, always hold it by the pipes and not by the actuator or the rods.Bent linkage will impair the function of the turbocharger. Loading/stressing the actuator can damage it. — First guide the regulating rod (2) into the guide piece again
10. Guide onto studs on flange between stages and join output stages together.
11. Tighten self-locking nuts (1), from repair kit electronic parts catalogue, to specified torque in prescribed sequence .
12. Screw nut (5) back onto regulating rod (2), fit locking plate (4), and apply sealing paint (1). [Note: The actuator is tested after fitting the turbocharger. The procedure is described further down in the following chapter Removing and installing regulating flap potentiometer G584.]

Other AUDI procedures

• Removing and installing fuel tank, engine codes CAAA, CAAB, CAAC, CAAD, CAAE, CCHA, CCHB, CFCA
• Removing and installing connecting pipes – Audi 2.0 TDI CFCA
• Removing and installing fuel delivery unit, fuel gauge sender
• Removing and installing tandem pump, engine codes AXB, AXC, BRR, BRS
• Checking vacuum hoses to non-return valve, solenoid valves N220 and N75, changeover valve N345 and vacuum reservoir
• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures