I think we;re talking aout different things here. The Hydropneumatic Leveling Device (Compensator IIRC) I talked about being on my W108 - a 68 280S, did not use a pump to keep it pressurized - it was more like a huge shock absorber (about8" dismeter x 12" long) that was mounted above the rear axle differential transversly.
It did not have ay air or fluid connections and there was no pump to maintain pressure. Perhaps there is more than one type? I see Rusty sells the Spring I used but not the compensator - maybe they;re difficult to get? Also, there may be some confusion because of the Air Bags used at each corner to maintain level on the higher end W108's? 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 PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs . ----- Original Message ----- From: "Peter Frederick" <[EMAIL PROTECTED]> To: "Mercedes Discussion List" <mercedes@okiebenz.com> Sent: Tuesday, December 18, 2007 9:53 AM Subject: Re: [MBZ] W108 hydropneumatic levelling device > It's a pump system with hydraulic damping using air compressed by the > movement of the piston shaft back and forth and an internal valving system > to keep the resting position the same. Works great when new, but I > suspect they are all long dead by now. > > Either the seals fail and it won't hold pressure, or the valves fail and > it won't generate pressure. > > There is a reason that Benz switched to pump driven hydraulic/nitrogen > self leveling in 1968. > > Peter > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.17.4 - Release Date: 12/16/2007 > 12:00 AM > > _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
