Question about 1999 Bentley Arnage

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Shocks I have a 99 bentley Arnarge, the shocks are not working properly. The car bounces constantly and when I had it checked, I was told the hydraullics were pumped all the way up and not adjusting! Any advice before I go to another Bentley dealership?

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On the hydro suspension system there are spheres which act as shock dampers. These are pumped up by the engine pump and run around 2400psi max.

As the wheels move up and down the 'ram' you would call the shock absorber displaces fluid into and out of the sphere/s. If these spheres are more than 6 years old, they go hard, because the nitrogen gas in them has leaked away. ( Gaseous Physics. They all do it. Nitrogen has a smaller molecual than the rubber trying to contain it.)

This nitrogen gas pushes a thick rubber diaphragm towards the hydraulic fluid acting as a spring. The small orifice the fluid has to pass through into and out of the sphere acts as a damper to the wheels movements up and down. A sensor on the axle/s keeps the pressure in the system at the correct ride hight.

You need new spheres if they have never been replaced.

Posted on May 09, 2014


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