6-Cylinder TFSI
Power Steering Pump, Checking Delivery Pressure
Special tools, testers and auxiliary items required
• Hose clamps up to 25 mm diameter (3094)
• Torque wrench (V.A.G 1331)
• Power steering tester (V.A.G 1402)
• Adapter set (V.A.G 1402/6)
• Shop Crane Drip Tray (VAS 6208)
• Adapter (V.A.G 1402/3) , needed for vehicles with a separating point inside the pressure line
• Adapter set (V.A.G 1402/17) , needed for vehicles without a separating point inside the pressure line
Test Prerequisites
• Ribbed belt/ribbed belt tension OK
• Sealing of system
• Hoses/lines are not kinked or constricted
Checking
- Clamp off the suction hose - 1 - and return hose - 2 - using the (3094).
• The (3094) must not be secured on the return hose - 2 - in the check valve area. Otherwise, check valve will be damaged.
• The check valve is located in the return hose - 2 - between the hose clamps - arrows -.
Applies to Vehicles with a Separating Point Inside the Pressure Line
- Remove noise insulation.
- Engage the tester - 3 - on the control arm - 1 - using a hook - 2 -.
- Position the (VAS 6208) below to collect the hydraulic oil.
- Loosen the union nut - 5 -. Counterhold at the hex head.
- Install (V.A.G 1402) as shown in illustration.
1. Pressure line with separating point
2. (V.A.G 1402/6)
3. (V.A.G 1402)
4. (V.A.G 1402/6)
5. (V.A.G 1402/3)
- Attach the (V.A.G 1402) hoses to the open connections on the pressure hose as illustrated.
Applies to Vehicles without a Separating Point
- Remove the bolts - 1 - and remove the pressure line from the power steering pump.
- If the pressure line is also attached to the A/C compressor, then remove the bolt - C - for the bracket - D -.
- Mount the (V.A.G 1402) as illustrated.
1. Power steering pump
2. Adapter (V.A.G 1402/17-1) * with elbow (V.A.G 1402/17-3)
3. Screw for mounting the pressure line
4. Hose from (V.A.G 1402/6)
5. (V.A.G 1402)
6. Pressure line
7. Adapter (V.A.G 1402/17-2) with (V.A.G 1402/17-3)
* 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.
Continuation for All
- Make sure that lever on pressure gauge stands in position - 2 -.
- Lower vehicle.
- Remove the (3094).
- Start engine without giving gas.
- Turn the steering wheel from lock to lock about 10 times.
- Switch off engine and, if needed, fill hydraulic fluid in reservoir.
• 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.
- Now check delivery pressure.
- Start engine.
- With the engine at idle, close the shut-off valve to position - 1 - and read the pressure (the lever must face away from the pressure hose). Do not perform measurement longer than 10 seconds.
Delivery pressure specified value, vehicles without dynamic steering: 115 to 132 bar
Delivery pressure specified value, vehicles with dynamic steering: 114 to 131 bar
If the pressure is not at the specified value, replace the power steering pump. Refer to => [ Power Steering Pump, Vehicles with Dynamic Steering ] Power Steering Pump, Vehicles With Dynamic Steering or => [ Power Steering Pump, Vehicles without Dynamic Steering ] Power Steering Pump, Vehicles Without Dynamic Steering.
- Switch off engine.
- Remove (V.A.G 1402).
Tightening specifications, refer to => [ Power Steering Pump, Hydraulic Lines and Reservoir Overview, Vehicles with Dynamic Steering ] Power Steering Pump, Hydraulic Lines and Reservoir Overview, Vehicles With Dynamic Steering and => [ Power Steering Pump, Hydraulic Lines and Reservoir Overview, Vehicles without Dynamic Steering ] Power Steering Pump, Hydraulic Lines and Reservoir Overview, Vehicles Without Dynamic Steering.
- Note the line installation location when bolting the line connection. The markings - 1 - and - 2 - must be opposite each other.
- Tighten the union nut - 1 -. Counterhold at the hex head.
- Tighten the nut - 3 - and the rubber bushing - 4 - if necessary.
- Bleed the steering. Refer to => [ Steering, Bleeding After Replacing ] Service and Repair.
- Check power steering fluid level. Refer to => [ Power Steering Fluid Level, Checking ] Power Steering Fluid Level, Checking.
- Check all open line connections for leaks. Refer to => [ Steering, Checking for Leaks ] Steering, Checking For Leaks.