1991 500sl real boncy hiting bumps

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yayamoo - 10 Jan 2007 08:25 GMT

1991 500sl real bouncy when hiting bumps,have hydrolic system,shocks
are not leaking,seem to be in good shape,why so bouncy

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TPr - 10 Jan 2007 11:41 GMT

because your accumulators are blown.
also known as "air cells" etc.

they are what enable the hydraulic piston in the struts to contract, since
liquids are not compressible, inside the cells a high pressure charge of
nitrogen in a bladder is placed in line with each strut. When the bladder is
compromised and the charge released into the system, it is purged out and
then becomes rock solid.

| 1991 500sl real bouncy when hiting bumps,have hydrolic system,shocks
| are not leaking,seem to be in good shape,why so bouncy

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Karl - 10 Jan 2007 15:24 GMT

Replace # 170 here:
http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=129061&M=104%2E981&GA=722%2E352722%2
E500&GM=717%2E451&CT=F&cat=515&SID=32&SGR=240&SGN=11

It takes two of them. Do it BEFORE you blow out the rear struts. Otherwise a couple hundred dollar
repair becomes a couple thousand dollar repair!

> 1991 500sl real bouncy when hiting bumps,have hydrolic system,shocks
> are not leaking,seem to be in good shape,why so bouncy

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Richard Sexton - 10 Jan 2007 22:54 GMT

>1991 500sl real bouncy when hiting bumps,have hydrolic system,shocks
>are not leaking,seem to be in good shape,why so bouncy

It's the shocks. They don't have to leak to be bad. Replace them
with the correct new Bilsteins (nothing else) and you'd get your
ride back.

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