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. 1402/1 A
^ Adapter V.A.G. 1402/2
^ Pressure gauge adapter V.A.G. 1402/6
^ Pliers for spring-type clamps VAS 5024A





- Remove engine cover - arrows -





- Pinch off return line using Hose Clamps Up To 25 mm Dia. 3094.





- Clamp off intake line using Hose Clamps Up To 25 mm Dia. 3094.
- Place drip tray underneath.
- Remove pressurized line from pump.

Connect power steering test unit V.A.G 1402.





1. Power steering test unit V.A.G 1402
2. Hose of pressure gauge V.A.G 1402
3. Hose from adapter set V.A.G 1402/6
4. Adapter V.A.G 1402/1 A
5. Seal
6. Adapter V.A.G 1402/2
7. Pressurized line with ring connection
8. Banjo fitting
- 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 high-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.