Removing and installing alternator - vehicles with 2.5 ltr. FSI and 3.0 ltr. TFSI engine — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

• Special tools named: 3094
• Renewed: o-rings

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• If alternator sticks in retainer, screw bolt back in again down to the last 2 turns.Tap carefully on bolt heads with flat side of hammer to release bushes of alternator mount.
• Renew O-rings.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.
• 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

1. Detach poly V-belt from alternator 13Cylinder block (pulley end); Removing and installing poly V-belt.
2. Clamp off coolant hoses using hose clamps 3094.
3. Place drip tray for workshop hoistVAS 6208 beneath engine.
4. Release hose clips and pull coolant hose (3) off alternator.
5. Move clear wiring harness (2) at coolant hose (arrows) and unplug electrical connector (1) at alternator.

6. Remove bolts (arrows). [Note: If alternator sticks in retainer, screw bolt back in again down to the last 2 turns.Tap carefully on bolt heads with flat side of hammer to release bushes of alternator mount.]
7. Slightly push alternator towards front (4) and if fitted, prise off protective cap for B+ wire.
8. Unscrew nut (2) and detach B+ wire (1).
9. Release hose clips and pull coolant hose (3) off alternator.
10. If fitted, move wiring harness clear at coolant pipe.
11. Take out alternator towards front. [Note: Renew O-rings.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
12. To facilitate positioning of alternator, drive back 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.]
13. Connect battery. Steps required .
14. Start engine and check that belt runs properly.

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