Delivery Pressure of Power Steering Pump, Checking

Delivery pressure of power steering pump, checking
Vehicles with 6-cylinder gasoline engine, BiTurbo





Special tools and equipment
^ VAG1921 hose clip pliers
^ VAG 1402 power steering tester
^ VAG1402/3 adapter





^ Open hose clamps (arrows) and remove intake hose -1-.
^ Remove union nut -2- while counterholding hex bolt on pressure line.
^ Use plug to plug line to steering gear.





^ Screw VAG 1402/3 adapter into line to power steering pump.
^ Install hose from VAG1402 pressure gauge on VAG 1402/3 adapter.
^ Close shut-off valve on pressure gauge (lever faces toward left).
^ Reinstall intake hose.
^ If necessary, add fluid to the power steering fluid reservoir.

Check pressure:

Note: To avoid damaging pump, note the following:
^ Do not allow the engine to run more than 10 seconds during the test.
^ Start engine w4hout depressing accelerator pedal and let engine idle.
^ Make a note of pressure immediately after starting engine when it is idling (this may require a second technician).
^ As pressure drops during check, the highest pressure is definitive.

Audi A 6: Specification: 120 - 130 bar positive pressure.
Audi Allroad: Specification: 120 - 130 bar positive pressure.

^ Turn engine off.
If specification is not obtained, replace the power steering pump
^ Check fluid level
^ Bleed steering system
^ Check steering system for leaks