Removing and installing balance shaft (exhaust side): Audi Q3 (BPU, BYT, BZB, CABA, …)

🧭 Before you start

Fits: Audi Q3 (8U, 2011–2018); platform code 84

• Special tools named: T10394/1

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• Repeat insertion of tube for balance shaft if the balance shaft is not in full contact.

🔧 Engine codes this applies to

📋 Procedure

1. Remove timing chain cover (top) .
2. Remove timing chain cover (bottom) .
3. Remove camshaft timing chain .
4. Remove drive chain for balance shafts .
5. Remove bolt (1) securing balance shaft (exhaust side).

6. Insert half shell T10394/1 from puller T10394.
7. Insert puller T10394 and press locking collar in direction of (arrow).
8. Screw puller T10055 into puller T10394 and knock out balance shaft. [Note: It might be necessary to cool the balance shaft before installing due to the minimal clearance between balance shaft and cylinder block. Check if it is possible to insert the balance shaft into the cylinder block without applying force. If this is not the case, the balance shaft must be cooled before installing.]
9. Check installation position of tube for balance shaft (arrow).
10. Put new balance shaft for 30 minutes into freezer compartment or spray with chilling agent (commercially available) if necessary.
11. Lubricate balance shaft bearing with engine oil.
12. Install new balance shaft (exhaust side).
13. Make sure that balance shaft is in full contact with crankcase before tightening bolt (1). [Note: Repeat insertion of tube for balance shaft if the balance shaft is not in full contact.]
14. Install drive chain for balance shafts .
15. Install camshaft timing chain .
16. Install timing chain cover (bottom) .
17. Install timing chain cover (top) .
18. Install poly V-belt tensioner .
19. Install poly V-belt .

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