Installing hydraulic pump (Cayenne Turbo/Cayenne S)
- In vehicles without Servotronic, the hydraulic system must be flushed with approx. two liters of Pentosin.
- The hydraulic system must be bled after repair → 48 IN Test and assembly work on power steering - as of MY 2003 (All Models Except Cayenne S TIO Titan) . The vehicle must be lowered onto the wheels for this.
- Only use Pentosin CHF 11 S to fill the hydraulic system.
- Pay attention to the hydraulic fluid level.
- Replace sealing rings.
- When replacing the hydraulic pump observe the instructions in the Technical Information, Replacing servo pump: Group 4, No. 5/03.
- Observe correct tightening torques → 48 TW Tightening torques for steering - as of MY 2003 (All Models Except Cayenne S TIO Titan) .
1. Fit hydraulic pump. → Tightening torque: 17 ftlb.
2. Fit pulley on the hydraulic pump and screw in the screws.
3. Fit drive belt in correct position and tension. Refer to 13 78 01 Checking drive belt - as of MY 2003 (Cayenne S TIP, Cayenne S MAN, Cayenne Turbo, Cayenne Turbo S, Cayenne S TIO Titan) .
4. Tighten the pulley on hydraulic pump. → Tightening torque: 17 ftlb.
5. Fit both hydraulic lines. → Tightening torque: 22 ftlb. +/-2.0 ftlb. → Tightening torque: 7.5 ftlb. Remove hose clamp 3094 .
6. Fit the pressure pipe on the turbocharger and on the charge air cooler. Connect positive crankcase ventilation pipe at the pressure pipe and at the hydraulic pump (not Cayenne S). Position heat shield.
7. Fit intake manifold on the turbocharger (not Cayenne S) and install air cleaner housing. Refer to 24 25 19 Removing and installing air cleaner housing - as of MY 2003 (Cayenne S TIP, Cayenne S MAN, Cayenne S TIO Titan) . Refer to 24 25 19 Removing and installing air cleaner housing - as of MY 2003 (Cayenne Turbo, Cayenne Turbo S) .
8. Fit air box for throttle housing (Y-pipe). Refer to 24 35 19 Removing and installing cowl for throttle housing (Y-shaped pipe) - as of MY 2003 (Cayenne S TIP, Cayenne S MAN, Cayenne S TIO Titan) . Refer to 24 35 19 Removing and installing cowl for throttle housing (Y-shaped pipe) - as of MY 2003 (Cayenne Turbo, Cayenne Turbo S) .
9. Fit the air cleaner element and the cover for the air cleaner housing.
10. Fit intake manifold on cover for air cleaner housing.
11. Insert wheel housing liner. Refer to 50 56 19 Removing and installing front wheel housing liner - as of MY 2003 (All Models) .
12. Disconnect pressure pipe on the servo oil cooler (line leading to the hydraulic fluid tank). Have a suitable plug ready and close the line (emerging hydraulic fluid!). Collect emerging hydraulic fluid in a suitable container.
13. Fill the hydraulic fluid tank. Use a suitable auxiliary hose (approx. 10 - 15 cm, shop-made) to carry hydraulic fluid that emerges during flushing into a suitable container (approx. 1.5 liters).
14. Rinse the hydraulic system with the engine running by turning the steering several times to the right or left stop, and adjust the hydraulic fluid level several times as required. The vehicle must be lowered onto the wheels for this. The tank must not run empty while the engine is running (two workers required).
15. Fit the pressure pipe on the servo oil cooler.
16. Bleed the hydraulic system with the engine running by turning the steering several times to the right or left stop, and adjust the hydraulic fluid level several times as required. → 48 IN Test and assembly work on power steering - as of MY 2003 (All Models Except Cayenne S TIO Titan) .