Removing and installing drive chain for balance shaft - vehicles with engine codes CNSB, CNTC, CHHB — AUDI

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020); platform code 85

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• The links of the drive chain for balance shafts with coloured markings must be positioned at the markings on the chain sprockets.
• Fit drive chain for balance shafts; links with coloured markings (arrows) must be positioned at markings on chain sprockets.

🔧 Engine codes this applies to

📋 Procedure

1. Remove camshaft timing chain .
2. Remove bolts (arrows).
3. Remove chain tensioner (1) for camshaft timing chain.
4. Remove guide rail (3).
5. Detach drive chain for balance shafts.

6. Turn idler gear/balance shaft to markings (arrow) (do not slacken bolt (1)). [Note: The links of the drive chain for balance shafts with coloured markings must be positioned at the markings on the chain sprockets.]
7. Fit drive chain for balance shafts; links with coloured markings (arrows) must be positioned at markings on chain sprockets.
8. Fit guide rail for timing chain and tighten bolts (3).
9. Install chain tensioner (1) for camshaft timing chain.
10. Install camshaft timing chain .

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