Power Steering Pump Delivery Pressure, Checking

Power steering pump delivery pressure, checking





Special tools, testers and auxiliary items required
^ Hose clamp 3094
^ Power steering tester V.A.G 1402
^ Adapter V.A.G 1402/2
^ Adapter V.A.G 1402/3
^ Adapter V.A.G 1402/4
^ Adapter hose V.A.G 1402/6

Vehicles with bottom-mounted power steering pump

Requirements:
^ Belt and belt tension OK
^ No leaks in system
^ Hoses and lines not kinked or constricted





^ Clamp off return line with hose clamp 3094.
^ Remove noise insulation tray.





- Clamp off intake line with hose clamp 3094.
- Place drip tray underneath vehicle.
- Disconnect pressure line from pump.

On vehicles equipped with pressure switch, first disconnect connector and remove switch.





- Insert adapter - 1 -.
Use a seal.

1 - V.A.G 1402/1
2 - V.A.G 1402/6 Hose from adapter set





- Connect pressure gauge V.A.G 1402.
A - Pressure switch
1 - Pressure gauge V.A.G1402
2 - V.A.G 1402/6 Hose from adapter set - 3 - Banjo bolt
4 - Banjo union on pressure hose
5 - V.A.G 1402/2
6 - V.A.G 1402 Hose from pressure gauge

- Remove hose clamps 3094 from intake and return lines.
- Start engine and, if necessary, top off fluid level in reservoir.
- Turn steering wheel approx. 10 times from lock to lock.
- Check delivery pressure.
- With engine idling, close shutoff valve (not longer than 5 seconds) and read pressure.

Specification: 110 to 120 bar

Note:
^ Replace the pump if the reading is higher or lower than specified:
^ Removing and installing power steering pump (vehicles with bottom-mounted power steering pump).
^ Always check steering system for leaks if fluid level is low in reservoir.
^ If leakage is visible at steering pinion, first check lines and line connections for leaks. Tighten and wipe dry if necessary.
^ Replace steering gear if leakage is found at steering pinion seal or at rack seal in steering gear housing.
^ To check steering rack seals, loosen hose clip on boot and push back boot.