Checking delivery pressure of engine pump unit (TRW) — VW
Checking delivery pressure of engine pump unit (TRW) on VW: 16 steps. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform codes 9J1, 9J2
- Opens: power steering fluid
📋 Procedure
- Draw off as much hydraulic fluid as possible from engine pump unit using a suction bottle.
- Remove noise insulation for engine 50.
- Remove pressure pipe on engine pump unit.
- Assemble adapter as shown in diagram.
- Fill up with hydraulic fluid and check fluid level .
- Bleed steering system .
- Now check delivery pressure.
- Start engine.
- With engine idling, close shut-off valve (position (1)) for no longer than 5 seconds and note pressure.
- Remove gauge and adapter.
- Attach pressure line to engine pump unit.
- Fill up with hydraulic fluid and check fluid level .
- Bleed steering system .
- Check hydraulic fluid level and top up if necessary .
- Check steering system for leaks .
- Attach noise insulation.
Other VW procedures
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.