Removing and installing oil return line for turbocharger — AUDI
Removing and installing oil return line for turbocharger on Audi: 31 steps, engines CAYD, CAYE, CUUB, CUUC.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Caddy IV (SA, 2015–2020)
- Renewed: gaskets, seal
Don't miss
- Do not bend flexible joint in front exhaust pipe more than 10°.
📐 39 workshop diagrams for CAYD
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- If fitted, remove noise insulation General body repairs, exterior66Noise insulation; Removing and installing noise insulation.
- Remove bolts (arrows).
- Remove heat shield for right drive shaft.
- Unbolt right drive shaft from gearbox, and tie it up on the side Running gear, axles, steering40Drive shaft; Removing and installing drive shaft.
- Disconnect electrical connector (2) at pressure differential sender G505.
- Remove bolt (3).
- Remove bolt (4).
- Remove pressure differential sender G505 from bracket (arrow).
- Remove screw-type clip (1) between particulate filter and turbocharger.
- Remove bolt (1).
- Remove nuts (2). [Note: Do not bend flexible joint in front exhaust pipe more than 10°.]
- Place particulate filter (1) aside.
- Remove nuts (2).
- Unscrew bolts (3).
- Remove connecting pipe (1) for exhaust gas recirculation cooler.
- Remove exhaust temperature sender 1G235.
- Unscrew bolt (2) of turbocharger support (1).
- Catch leaking oil with used oil collection and extraction unitV.A.G 1782.
- Loosen banjo bolt (4) of oil return line (1) on crankcase.
- Loosen banjo bolt (5) of oil supply line (2) on crankcase.
- Unscrew bolt (3) of retainer.
- Unscrew bolts (6) from combined flange.
- Unscrew banjo bolts (4) and (5).
- Remove turbocharger support from combined flange. [Note: Renew gaskets, seals, O-rings and self-locking nuts Electronic Parts Catalogue.Renew seal and clamp for particulate Electronic Parts Catalogue.If the particulate filter or pressure differential sender G505 are renewed, the pressure differential sender G505 must be adapted using the .]
- Fit turbocharger support with combined flange to crankcase and turbocharger.
- Start banjo bolt (4) and bolts (6) for combined flange.
- Tighten banjo bolt (4) and bolts (6) alternately.
- Tighten banjo bolt (5) of oil supply line (2) on crankcase.
- Tighten bolt (3) of retainer.
- Tighten bolt (2) of turbocharger support (1).
- Installing exhaust temperature sender 1G235.
Ask TorqFix about your Audi CAYD — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your Audi CAYD — free → or sign up free to see the drawingsOther AUDI procedures
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.