Diesel Data: Automotive Repair

Power Steering Pump: Testing and Inspection


Power steering pump delivery pressure for vehicles with 6-cylinder engine
Special tools and equipment required





- 3094 Hose clamps
- VAG 1402 Power steering test module
- VAG 1402/3 Adapter





- Unclip engine cover and take off.





- Remove ribbed belt cover -arrows-.
- Clamp off suction hose with hose clamp -3094-.





- Press connector spring clip and pull connector off injector.
- Remove line from pressure hose (arrow), when doing this counter-hold on pressure hose hex.





- Screw adapter VAG 1402/3 into line in place of pressure hose.





- Screw pressure gauge -VAG 1402- hose onto adapter -VAG 1402/3-.
- Close gauge shut-off valve (lever to left).
- Install injector connector onto injector.
- Remove hose clamp from suction hose.
- Start engine and if necessary add fluid to reservoir.
- Read off gauge pressure with engine at idling speed (do not measure longer than 10 seconds).
Specification: 110 - 120 bar.
If the specifications are not reached, replace power steering pump.
- Check hydraulic oil level.
- Check steering system for leaks.
- Bleed steering system.