Removing and installing alternator - Audi RS 4: Audi A4 B8
Step-by-step removing and installing alternator - Audi RS 4 for the Audi A4 B8: 25 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A4 B8 (8K, 2007–2015)
Don't miss
- Mark position of bolts (arrows) with respect to lock carrier and then remove bolts.
- Stiff alternator mount bushes must be freed; otherwise the clamping force of the bush will not be adequate even when the bolts are tightened to the correct torque.
📋 Procedure
- With ignition switched off, disconnect earth cable at battery .
- Remove radiator 19Radiator/radiator fans; Removing and installing radiator.
- Remove tensioning roller for poly V-belt 13Cylinder block (pulley end); Removing and installing tensioner for poly V-belt.
- Release hose clips to detach coolant hoses at coolant pipe (2), engine oil cooler (3) and alternator (1).
- Unscrew bolts (arrows) for alternator approx. 6 turns.
- Tap carefully on bolt heads with a hammer to release bushes on alternator mountings.
- Remove bolts completely.
- Unplug electrical connector for engine mounting (2) and oil level and oil temperature sender G266(item 1).
- Release electrical wiring harness (3) at bracket and move clear.
- Remove bolt (5).
- Detach (4) oil pipe.
- Release hose clip to detach coolant hose (4).
- Detach alternator from bracket.
- Unplug electrical connector (3).
- Bend heat shield above wire for terminal 30/B+ upwards.
- Pry off cap.
- Detach wire (item 2) for terminal 30/B+; to do so, unscrew nut from input shaft side using long extension (1).
- Mark position of bolts (arrows) with respect to lock carrier and then remove bolts.
- With lock carrier (1) slightly pulled to front, take out alternator (2) forwards.
- To facilitate positioning of alternator, drive back sliding bushes for securing bolts slightly. [Note: Stiff alternator mount bushes must be freed; otherwise the clamping force of the bush will not be adequate even when the bolts are tightened to the correct torque.]
- Install oil pipe at temperature regulator for engine oil cooler 17Engine oil cooler; Removing and installing temperature regulator for engine oil cooler.
- Install tensioning roller for poly V-belt 13Cylinder block (pulley end); Removing and installing tensioner for poly V-belt.
- Install radiator 19Radiator/radiator fans; Removing and installing radiator.
- Connect battery. Steps required .
- Start engine and check that poly V-belt runs properly.
Other AUDI procedures
- 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
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.