Balance shaft assembly with oil pump - exploded view — AUDI
Balance shaft assembly with oil pump - exploded view on Audi: 3 steps, 1 torque figure, engines AXX, BHZ, BPY, BWA.
This page deals with fitting the balance shaft assembly with oil pump on the Audi A3 8P (2003–2012) with the AXX, BHZ, BPY, BWA, BZC, CDLA or CDLC engine, and specifically how its bolts are tightened. The module sits in the bottom of the engine, so the sump has to be off to reach it. The fixing bolts are first screwed in hand-tight, then tightened to 15 Nm in a diagonal sequence starting in the middle and working outwards, and finally turned a further 90° (1/4 turn) in the same sequence. The angle stage should be done with a rigid wrench rather than a ratchet that flexes. Sequence and angle are what keep the housing flat and the oil pump sealing properly.
🧭 Before you start
Screw all bolts in hand-tight, tighten them to 15 Nm in diagonal sequence from the inside outwards, then turn each one a further 90° in the same sequence with a rigid wrench.
Fits: Audi A3 (8P, 2003–2012)
Don't miss
- Tighten in diagonal sequence from the inside outwards at both stages.
- First stage is 15 Nm, then a further 90° (1/4 turn).
- Use a rigid wrench for the angle stage, not a flexible ratchet.
- Renew angle-tightened bolts unless instructed otherwise (general practice).
Written for this job from the workshop steps below · TorqFix editorial.
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 15 Nm (11 lb-ft) | Tighten bolts (arrows) |
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.
📐 67 workshop diagrams for AXX
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Screw in bolts (arrows) hand-tight.
- Tighten bolts (arrows) to 15 Nm in diagonal sequence starting from inside and working outwards. — 15 Nm (11 lb-ft)
- Turn bolts (arrows) 90° further (1/4 turn) in diagonal sequence starting from inside and working outwards using a rigid wrench.
Ask TorqFix about your Audi AXX — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your Audi AXX — free → or sign up free to see the drawingsOther AUDI procedures
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.