Removing and installing oil pressure regulating valve N428 — VW
Removing and installing oil pressure regulating valve N428 on VW: 11 steps, engines CASA, CASD, CATA, CAWB.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Touareg II (7P, 2010–2018)
- Timing position: the crankshaft or camshaft is set and locked during this job
- Renewed: o-ring
🔧 Engine codes this applies to
📐 18 workshop diagrams for CASA
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Remove front noise insulation (1)50.
- Turn locking pins (arrows) 180° and pull out upwards.
- Pull intake connecting pipe (A) out of the upper section of the air filter.
- Open clips and remove upper part of air filter (B).
- Remove filter elements.
- Disconnect electrical connector (3) and remove bolt (1).
- Release hose clips (2) and (5) and remove air pipes (left-side).
- Disconnect electrical connector (1).
- Remove bolt (2) and remove oil pressure control valve N428. [Note: Renew O-ring.]
- Install upper part of air filter.
- Install noise insulation 50.
Ask TorqFix about your VW CASA — 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 VW CASA — free → or sign up free to see the drawingsOther VW 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.