Power Steering Pump Delivery Pressure, Checking

Power Steering Pump Delivery Pressure, Checking

Special tools, testers and auxiliary items required

• Power Steering Test Unit (VAG1402)

- Remove engine cover.

- Disconnect extension hose - arrow - while counterholding extension hose hex head.





• Place a cloth under separation point to absorb escaping hydraulic oil.

• Remove hydraulic line bracket if necessary to make work easier.

- Screw Power Steering Test Unit (VAG1402) hose onto extension hose.





- Close gauge shut-off valve (lever to left).

• To avoid damage to pump, observe the following:

• Pressure gauge shut-off valve must not remained closed longer than 10 seconds during this test.

• Start engine without giving gas and run at idle.

• Read the pump pressure immediately after starting at idle speed (have it read by second technician, if necessary).

• Because pressure falls over the course of the test, the highest pressure shown is the decisive measurement.

- Start engine and top off fluid level in reservoir if necessary.

- At idle speed, read the pressure on pressure gauge (measurement no longer than 10 seconds).

Pump Pressure Specified Value (Positive Pressure)





If specification is not obtained, replace power steering pump.

- Switch off engine.

- Remove pressure gauge.

- Connect extension hose while counterholding hose hex head.

- Check power steering fluid level. Refer to => [ Power Steering, Checking Fluid Level ] Testing and Inspection.

- Check steering system for leaks. Refer to => [ Steering System, Checking for Leaks ] Steering System, Checking for Leaks.

- Bleed steering system. Refer to => [ Steering System, Bleeding after Reconstructing ] Service and Repair