Removing and installing alternator, 1.4 l, 90 kW TSI engine — VW

🧭 Before you start

Disconnect the battery, move the charcoal filter aside, remove the belt and the upper alternator bolt. Remove the noise insulation, disconnect the DF connector and B+ wire, unbolt the AC compressor and hang it on wire. Remove the lower bolt and lower the alternator out. Drive the threaded sleeves out about 4 mm, refit everything, tighten the cable retainer in the 9 o'clock position, torque to the assembly overview and start up to check the belt.

Fits: VW Golf Cabriolet (517, 2011–2016)

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• Suspend the AC compressor on wire with its hoses connected but not stretched or kinked.
• Drive threaded sleeves (A) about 4 mm out of the alternator housing before fitting.
• Refit a used poly V-belt in the running direction marked on removal.
• Tighten the cable retainer on the alternator rear in the 9 o'clock position.
• Check all driven units are mounted correctly before fitting the belt.

Written for this job from the workshop steps below · TorqFix editorial.

📋 Procedure

1. Disconnect battery .
2. Pull activated charcoal filter (1) upwards out of fasteners (arrows).
3. Place activated charcoal filter (1) with connected hoses to one side.
4. Remove poly V-belt Power unit13Dismantling and assembling engine; Removing and installing poly V-belt.
5. Remove upper alternator securing bolt (arrow).

6. Remove noise insulation General body repairs, exterior50 Noise insulation.
7. Unscrew wiring retainer (2) and pull off protective cap (1).
8. Disconnect DF connector (1) and unscrew battery positive wire (2) from alternator.
9. Remove securing bolts of air conditioner compressor (arrows).
10. Release and disconnect connector (1).
11. Unscrew third securing bolt (arrow) and remove air conditioner compressor from bracket. [Note: The hoses of the air conditioner compressor can remain connected.Suspend the air conditioner compressor (3) using a piece of wire (1) at a suitable position under the vehicle until it is ready to be reinstalled.Ensure that the hoses (2) are not stretched or kinked when doing this.]
12. Remove lower alternator securing bolt (arrow).
13. Remove alternator from vehicle downwards.
14. ⚠ When installing used poly V-belts observe the direction of rotation marked on removal!Before installing poly V-belt, ensure that all assemblies (alternator, air conditioner compressor, vane pump) have been mounted correctly.When fitting belt, ensure that poly V-belt seats correctly in pulleys! — Drive threaded sleeves (A) about 4 mm in direction of (arrow) out of alternator housing.
15. Tighten cable retainer (arrow) to rear of alternator in 9 o'clock position.
16. Tighten threaded connections to torques specified in assembly overview .
17. Start engine and check belt is running correctly.

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