Power Steering Pump Delivery Pressure, Checking

Power steering pump delivery pressure, checking

Special tools, testers and auxiliary items required:

^ Hose Clamps Up To 25 mm Dia. 3094
^ Power steering test unit V.A.G. 1402
^ Adapter V.A.G. 1402/1A
^ Adapter V.A.G. 1402/2
^ Pressure gauge adapter V.A.G. 1402/6
^ Pliers for spring-type clamps VAS 5024A





- Pinch off return line using Hose Clamps Up To 25 mm Dia. 3094.
- Remove sound-deadening pan.





- Pinch off intake line using Hose Clamps Up To 25 mm Dia. 3094.
- Place drip tray underneath.
- Remove mounting clamp for pressurized line from cylinder block.
- Remove pressurized line from pump.





- Insert adapter - 1 -
Use a seal.
1 - Hydraulic Fitting-110 Degree V.A.G. 1402/1 A
2 - Hose from adapter set V.A.G. 1402/6





- Connect pressure gauge V.A.G 1402 VAG1402.
1. Pressure gauge V.A.G 1402
2. Hose from adapter set V.A.G. 1402/6
3. Banjo fitting
4. Ring support of pressure hose
5. V.A.G. 1402/2
6. Hose of pressure gauge V.A.G 1402
- Remove Hose Clamps Up To 25 mm Dia. 3094 from intake line and return line.
- Start engine and top off fluid level in reservoir if necessary.
- Turn steering wheel from stop to stop approximately 10 times.
- Check pumping pressure.

Test requirements:
^ 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) and read pressure.

Specified values
- Gasoline engines: 85 to 95 bar
- Diesel engines: 96 to 105 bar

Note:
^ If specification is not reached or exceeded, replace pump:
^ Removing and installing power steering pump, vehicles with low-mounted power steering pump.
^ If power steering fluid is low in the servo fluid reservoir, check steering system for leaks.
^ In case of leaks at steering pinion, check lines/line connections for leaks, if necessary tighten and wipe dry.
^ In case of leaks at the steering pinion or at pinion shaft seal in steering housing, the steering gear must be replaced.
^ To test rack seal open hose clamp of boots and set boots aside.

- Bleed steering system.