Removing and installing alternator - vehicles with 4.2 ltr. TDI engine — AUDI

🧭 Before you start

Fits: Audi A8 D4 (4H, 2010–2017)

Don't miss

• 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. Disconnect earth cable from battery with ignition switched off .
2. Remove tensioner for poly V-belt 13Cylinder block (pulley end); Removing and installing tensioner for poly V-belt.
3. Remove turbocharger (right-side) 21Turbocharger; Removing and installing turbocharger.
4. Unscrew nut (2) and detach B+ wire (1).
5. Unplug electrical connector (3).

6. Unscrew bolts (arrows) for alternator approx. 6 turns.
7. Tap carefully on bolt heads with a hammer to release sliding bushes securing alternator.
8. Remove bolts completely.
9. Take out alternator towards right. [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.]
10. To facilitate positioning of alternator, drive back sliding bushes for securing bolts slightly.
11. Connect battery. Steps required .
12. Start engine and check that 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
• Removing and installing air intake grille (left-side) - vehicles from model year 2013 onwards
• Removing and installing pump motor – Audi TT Mk2 · 1 torque figures
• Removing and installing A-pillar trim (bottom), Roadster
• Checking fuel system pressurisation pump G6 (front-wheel drive)
• Exploded view - flywheel · 1 torque figures