Checking delivery pressure of vane pump - Vehicles with 5-cyl. engine — AUDI
Checking delivery pressure of vane pump - Vehicles with 5-cyl. engine on Audi: 11 steps. What to remove, in what order, and what to check after.
This is the vane pump pressure check on 5-cylinder cars carrying the 4A platform code. It is short and direct: the suction and return pipes are clamped, the expansion hose is unscrewed from the pump, and the tester adapter screws in where the banjo bolt was, with a new seal on it. The gauge hose goes on the adapter, the shut-off valve is closed with the lever to the left, the hose clamp is removed and the reservoir topped up before the engine is started. Afterwards the hydraulic level is checked, the system checked for leaks and the steering bled. The outcome depends on a sealed adapter joint and on keeping the measuring time short so the pump is not overheated against a closed valve.
🧭 Before you start
Clamp the suction and return pipes, unscrew the expansion hose and screw the adapter with seal into the pump in place of the banjo bolt. Connect the gauge hose, close the shut-off valve, remove the clamp and top up the reservoir, then start the engine and take the reading. Finish by checking the fluid level, checking for leaks and bleeding the steering system.
Fits: platform code 4A
- Special tools named: 3094, V.A.G 1402
Don't miss
- Fit seal N 013 844 4 on the adapter before screwing it into the pump.
- Close the shut-off valve with the lever to the left before starting.
- Remove the hose clamp and top up the reservoir before the engine runs.
- Bleed the steering system and check for leaks once the test hardware is off.
- As general practice, keep the valve closed only briefly to avoid overheating the pump.
Written for this job from the workshop steps below · TorqFix editorial.
📋 Procedure
- Pinch off the suction and return pipes with hose clamps 3094.
- Unscrew the expansion hose from the vane pump.
- Attach sealN 013 844 4 to adapterV.A.G 1402/3.
- Screw the adapterV.A.G 1402/3 into the vane pump in place of the banjo bolt.
- Screw the hose of the pressure gauge V.A.G 1402 onto the adapterV.A.G 1402/3.
- Close the pressure gauge shutoff valve (lever to left).
- Detach the hose clamp and top up the fluid level in the reservoir if necessary.
- Start the engine.
- Check the hydraulic fluid level .
- Check the steering system for leaks .
- Bleed the steering system .
Other AUDI procedures
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Removing and installing spoiler for rear lid - Saloon, equipment versions: DTM and S line
- Connecting airbag adapterVAS 5094
- Removing and installing seat side trim – Audi A6 C5
- Removing and installing base frame of child seat - Avant
- Removing seat heater (sports seat) – Audi A6 C5
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.