Howdy -
When the hydropneumatic levelling device died on my W108 it allowed the
rear of the car to ride very low. Waaaay too low. I found a Spring Assy.
that could be used in lieu of the compensator since back then (30 years ago)
they were almost $500. The Spring was less than $100 and IIRC I bought it
from a place in Fl.
The spring brought the rear end back to proper ride height and changed
the ride very little.
My compensator never leaked - it just collapsed - that's the way they
all fail AFAIK.
Good luck -
Larry T (67 MGB, 74 911, 78 240D, 91 300D)
www.youroil.net for Oil Analysis and Weber Parts
Test Results http://members.rennlist.com/oil
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.
----- Original Message -----
From: "David Bruckmann" <[EMAIL PROTECTED]>
To: "Mercedes List" <mercedes@okiebenz.com>
Sent: Tuesday, December 18, 2007 2:23 AM
Subject: [MBZ] W108 hydropneumatic levelling device
> OK gang, I've looked everywhere and have not found a description of what
> is inside the hydropneumatic device fitted to W108 rear axles.
>
> Is this a typical nitrogen-charge-behind-a-diaphragm scenario (this would
> explain why they don't last forever) or did the engineers do something
> clever? Well, the self levelling is a clever idea in itself, but were they
> able to avoid the need for a diaphragm and a nitrogen charge...
>
> What is the failure mode for these devices? Is it just that they stop
> performing the levelling function (loss of fluid) or do they lose the
> nitrogen charge and then become very firm, producing a harsh ride?
>
> Numerous people have told me that this device doesn't last and doesn't
> make a big difference etc etc, but people say the same about the
> self-levelling on MB wagons and that's certainly not a troublesome system
> if you understand it.
>
> Has anyone actually seen one of the W108-fitted devices in pieces, or a
> diagram of its composition?
>
> D.
>
> --
> David Bruckmann, Palo Alto, CA
> Current Reality:
> 1970 Citroen DS21 Pallas (170,000 km) "Goettin"
> 1972 Mercedes-Benz 280 SEL 4.5 (150,000 km) "Blauer Engel"
> 1976 Citroen 2CV6 (145,000 km) "Piaf" http://dolly.bruckmann.com/
> 1979 Mercedes-Benz 300D (390,000 km) "Brown Betty"
> Shady Past:
> 1971 Citroen DS21 Pallas (137,000km), 1972 Citroen DS21 Pallas (502,000km)
> 1978 Mercedes-Benz 300D (1,200,000 km or thereabouts) "Sieglinde"
> 1979 Mercedes-Benz 300TD non-turbo (260,000 km) "Diva"
> 1981 Citroen 2CV6 Charleston (120,000km), 1988 Merkur XR4Ti (209,000km)
> 1981 Peugeot 505 GRD (350,000km), 1984 MB 300TD (385,000 km) "Gertraud"
> 1985 Toyota Camry "The Slamry" (330,000km) 1986 Renault 9 1.7L (155,000
> km)
> 2002 VW Golf GLS TDI "The Hated Golf" (74,000 km)
>
> ----------------------------------------------------------------------
>
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