Renewing oil seal for balance shaft (inlet side): Audi A3 (BPU, BYT, BZB, CABA, …)

🧭 Before you start

Fits: Audi A3 (8P, 2003–2012)

• Opens: coolant

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• Risk of damage to thread.The drive sprocket bolt has a left-hand thread. — Apply thrust piece T10353 to oil seal (1) and press into cylinder block as far as stop using bolt (2) (take care not to tilt oil seal).
• Do not reuse coolant.

🔧 Engine codes this applies to

📋 Procedure

1. Remove small coolant pipe .
2. Remove toothed belt for coolant pump .
3. Unscrew bolt (2) and detach drive sprocket (1) for toothed belt for coolant pump.
4. Press screwdriver (1) firmly onto section (2) of oil seal (arrow B).
5. Lever out oil seal (arrow A).

6. Clean contact surface and sealing surface.
7. Lubricate sealing surface of balance shaft (2) with gear oil.
8. Fit oil seal (1) onto balance shaft.
9. ⚠ Risk of damage to thread.The drive sprocket bolt has a left-hand thread. — Apply thrust piece T10353 to oil seal (1) and press into cylinder block as far as stop using bolt (2) (take care not to tilt oil seal).
10. Install toothed belt for coolant pump .
11. Install small coolant pipe . [Note: Do not reuse coolant.]
12. Fill up with coolant .

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