Detaching pulley from air conditioner compressor/re-attaching ("“Denso”" make, version "“2”") — AUDI

🧭 Before you start

Fits: Audi A3 (8P, 2003–2012)

Don't miss

• Replace the circlip (A).Clean the air conditioner compressor flange before attaching the pulley.On fitting the circlip (A), take care not to bend it open more than necessary.
• Ensure correct insertion of the circlip (A). The bevelled side (C) faces away from the air conditioner compressor (flat side faces compressor).

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Remove the plastic disc (B) from the pulley (A) (if fitted).
2. Use a small screwdriver or pointed-nose pliers, for example, to carefully remove the circlip (A) (possibly with vulcanised rubber disc), taking particular care not to damage the pulley.
3. Hold the air conditioner compressor drive shaft (B) in position with a commercially available Allen key or a socket wrench from the damper set T10001 (depending on air conditioner compressor version) and turn the drive plate (C) with the pulley (D) in the direction of arrow (E) (tightening torque 35 Nm). — 35 Nm (26 lb-ft)
4. Detach the drive plate (C).
5. Remove the circlip (A).

6. Detach the pulley (B). [Note: Replace the circlip (A).Clean the air conditioner compressor flange before attaching the pulley.On fitting the circlip (A), take care not to bend it open more than necessary.]
7. Fit the pulley (B).
8. Ensure correct insertion of the circlip (A). The bevelled side (C) faces away from the air conditioner compressor (flat side faces compressor).
9. Insert the rubber elements (D) in the pulley (B) as shown.
10. For fitting the drive plate, moisten the rubber elements (D) slightly with tyre assembly paste or soap solution for example to provide lubrication.
11. Insert the drive plate (C) in the rubber elements (D) (refer to illustration A87-0633) until it makes contact with the shaft of the air conditioner compressor (B).
12. Screw the drive plate (C) onto the compressor shaft (B) by turning it in the direction of arrow (F).
13. Tighten the drive plate (C) (by way of the pulley (D)) to 35 Nm by turning in direction of arrow (F) with a commercially available strap wrench (with fabric strap). Hold the compressor shaft (B) in position with a commercially available Allen key or a socket wrench from the damper set T10001. — 35 Nm (26 lb-ft)
14. Fit the circlip (A) (with rubber disc).
15. Clean the drive plate of the pulley (A) and affix the plastic disc (B) to the centre of the drive plate (air conditioner compressors with no rubber disc at circlip only).

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