Cayenne S (9PA) V8-4.5L (2003)
Power Steering Pump: Service and Repair
Removing and installing hydraulic pump (Cayenne Turbo/Cayenne S)
Position of hydraulic pump on engine
General
Damage to the power steering is caused by a shortage of oil in the hydraulic system. Even small leaks can cause the hydraulic fluid to escape and
damage the servo pump as a result of the high oil pressure occurring in the hydraulic circuit.
Grunt-like noises that can be heard when the steering is locked, or foam formation in the reservoir indicate a shortage of oil and/or that air has also
been sucked in. Before filling the reservoir, any existing leaks must be eliminated on the suction side. Alternatively, the defective part on the pressure
side should be replaced.
Caution! Danger of damage to property if too much Pentosin CHF 11 S is filled or if Pentosin CHF 11 S comes into contact with the coolant
hoses when filling or topping up.
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Observe the following specifications in order to avoid overfilling and thus overflowing.
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The engine must be run for approximately 20 seconds prior to the fluid level check. Multiple steering operations (maneuvering) change
the fluid level in the reservoir. Check fluid level.
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If coolant hoses come into contact with Pentosin, thoroughly clean them with water IMMEDIATELY.
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Replace visibly swollen coolant hoses.
Removal
Note!
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The engine does not have to be removed in order to remove and install the hydraulic pump.