Removing and installing alternator, 4.2 l injection engine — VW

🧭 Before you start

Fits: VW Phaeton (3D)

• Opens: coolant
• Timing position: the crankshaft or camshaft is set and locked during this job
• Renewed: seals

Don't miss

• The coolant hoses may remain attached to the coolant pipes.

📋 Procedure

1. ⚠ When batteries are disconnected, the procedure described in the workshop manual must be strictly followed . If the sequence is not maintained, the ignitor capsule of the pyrotechnical battery isolator may be triggered and the electrical equipment of the vehicle may be damaged. — Disconnect battery .
2. Remove noise insulation General body repairs, exterior50Noise insulation; Assembly overview - noise insulation.
3. Drain coolant 8-cyl. injection engine19Removing and installing parts of cooling system; Draining and filling coolant.
4. ⚠ Before removing, mark the top side and direction of rotation of the poly V-belt. When installing, ensure correct fitting position and direction of rotation. If the belt is installed in the wrong position or against direction of rotation, the belt will be destroyed! — Remove tension from poly V-belt by swinging tensioning element using 19 mm open jaw spanner.
5. Lock tensioning element using locking pin T10060.

6. Pull protective cap (1) off and separate connector (2).
7. Unscrew B+ (battery positive) wire (arrow) from alternator.
8. Remove securing bolt (1) and remove bracket (2) for coolant pipe from alternator.
9. Pull coolant pipes (3) out of alternator. [Note: The coolant hoses may remain attached to the coolant pipes.]
10. Remove securing bolts of alternator (arrows).
11. Remove the alternator from the bracket.
12. ⚠ When installing used poly V-belts observe the direction of rotation marked on removal!Before installing poly V-belt, ensure that all ancillaries (alternator, air conditioner compressor, vane pump) are secure.When fitting belt, ensure that poly V-belt seats correctly in pulleys! — Tighten threaded connections to torques specified in assembly overview .
13. Renew seals on coolant pipes.
14. Fill with coolant 8-cyl. injection engine19Removing and installing parts of cooling system; Draining and filling coolant.
15. ⚠ When batteries are connected, the procedure described in the workshop manual must be strictly followed . If the sequence is not maintained, the ignitor capsule of the pyrotechnical battery isolator may be triggered and the electrical equipment of the vehicle may be damaged.Observe notes for battery terminal clamp bolt . — Reconnect battery .
16. Start engine and check belt is running correctly.

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