6-Cylinder Diesel, From MY 2009

Power Steering Pump, Checking Delivery Pressure

Special tools, testers and auxiliary items required

• Hose clamps up to 25 mm (3094)

• Power steering tester (V.A.G 1402)

• Adapter (V.A.G 1402/2)

• Adapter set (V.A.G 1402/6)

• Adapter set (V.A.G 1402/17)

- Carefully pull off design cover from 4 retaining pins - arrows -.





- Remove the air guide hose - 1 -.





- Clamp off intake hose using (3094).





- Remove the screws - 1 - and remove the pressure line from the power steering pump.

- Mount the (V.A.G 1402) and the adapters as illustrated.





1. (V.A.G 1402)

2. Hose from (V.A.G 1402/6)

3. Bolt

4. Pressurized line

5. Adapter (V.A.G 1402/17-2) 1) with elbow (V.A.G 1402/17-3)

6. Power steering pump

7. Adapter (V.A.G 1402/17-1) with (V.A.G 1402/17-3)

1) Replace the (V.A.G 1402/17-1) seal if it is damaged or leaking. Refer to the Electronic Parts Catalog (ETKA).

• Position the (V.A.G 1402/17-3) on the (V.A.G 1402/17-1) so that the hose from the (V.A.G 1402/6) does not touch the pulley and/or ribbed belt.

• Tighten the union nuts on the (V.A.G 1402/17-3) and the (V.A.G 1402/6) hoses hand-tight with an open-end wrench.

- Remove (3094) from intake hose.

Make sure that lever on pressure gauge stands in position - 2 -.





- Install the air guide hose - 1 -.





- Start engine and top up hydraulic fluid in reservoir if necessary.

- Turn the steering wheel from lock to lock about 10 times.

- Now check delivery pressure.

Test Prerequisites

• Ribbed belt/ribbed belt tension OK

• Sealing of system

• Hoses/lines are not kinked or constricted

- With engine at idle speed, close stopcock, not more than 5 seconds (position - 1 -) and read pressure.





Specification for Delivery Pressure: 120 to 128 bar

If specified value is not obtained, replace power steering pump. Refer to => [ Power Steering Pump ] Service and Repair.

- Remove the pressure gauge and adapter.

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

- Check hydraulic fluid level and top off, if necessary. Refer to Maintenance Booklet, Power-assisted steering: Check oil level.

- Check the steering system for leaks. Refer to => [ Steering System, Checking for Leaks ] Component Tests and General Diagnostics.