Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #31  
Old 12-10-2010, 07:09 PM
babymog's Avatar
Loose Cannon - No Balls
 
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,765
Why not just use an extra TD sphere?

__________________

Gone to the dark side

- Jeff
Reply With Quote
  #32  
Old 12-10-2010, 08:24 PM
Alastair's Avatar
Registered User
 
Join Date: Mar 2002
Location: South Wales U.K.
Posts: 1,064
Quote:
Originally Posted by babymog View Post
Why not just use an extra TD sphere?
Isnt the 'Bump and Rebound' valves (That form the 'shock-absorber' in connection with the actuator on the trailing-arm) in the entrance to the M.B. SLS Sphere?

The Citroen one--The actual Accumulator-- is made for just that job. They are pretty cheap and wouldnt be much to send overseas....

Here you go--

https://secure.gsfcarparts.com/shop/results.asp

Bugger, Cant link to the page, Anyway they are 23 quid each, do a search on that site for Citroen Xantia Sphere, it'll bring up all the various ones used on that model--There's loads, but its the accumulator that would be needed.

I defo know the bump-rebound valves are in the spheres on Citroens....
__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....

Last edited by Alastair; 12-10-2010 at 08:35 PM.
Reply With Quote
  #33  
Old 12-10-2010, 09:38 PM
Banned
 
Join Date: Nov 2001
Location: Cape Cod Massachusetts
Posts: 1,427
Quote:
Originally Posted by Alastair View Post
Isnt the 'Bump and Rebound' valves (That form the 'shock-absorber' in connection with the actuator on the trailing-arm) in the entrance to the M.B. SLS Sphere?

The Citroen one--The actual Accumulator-- is made for just that job. They are pretty cheap and wouldnt be much to send overseas....

Here you go--

https://secure.gsfcarparts.com/shop/results.asp

Bugger, Cant link to the page, Anyway they are 23 quid each, do a search on that site for Citroen Xantia Sphere, it'll bring up all the various ones used on that model--There's loads, but its the accumulator that would be needed.

I defo know the bump-rebound valves are in the spheres on Citroens....
With MB accumulator spheres, the opening to the sphere is without any valving that I'm aware of, in fact a suitably diametered screw driver or similar object can be inserted until it makes contact with the fitting on the rubber bladder. With that done sufficient pressure can be applied to push against the bladder and roughly access the state of the nitrogen charge contained by the bladder or in the alternative determinr that the bladder has failed and it contains no nitrogen charge.

I'd suspect any hydraulic damping valves would be part of the struts themselves, the accumulators act as pneumatic springs not dampers. The FSM should show a cut-away view of the accumulator construction somewhere, that would definatively answer the question. And somewhere there is a thread where someone dissected an MB accumulator showing its internal construction also.
Reply With Quote
  #34  
Old 12-11-2010, 03:13 PM
Alastair's Avatar
Registered User
 
Join Date: Mar 2002
Location: South Wales U.K.
Posts: 1,064
Billybob-

You're prob right. I just suspected that those valves maybe in there as thats where the Citroen's valves live, and Ive not had my 'balls' off.

Only real difference between the Citroen system and the M.B. SLS is that the Citroen has no road-spring at all. The entire suspension is on the actuator, (Strut) Sphere and Hydraulic pump.

--On the Citroen, The Brake-System is also supplied with pressure from the suspension system hydraulics, one reason why its important the accumulator is good on a Citroen!
--Lose the hyd. pump with buggered Accumulator and you have only the hyd. pressure in the suspension left to operate the brakes!!

If there's no valves in an M.B Suspension Sphere, then it would be an ideal candidate as an Accumulator, as its pressure-range is 'correct' for the SLS system pressure....

The way we used to test Citroen Spheres should also work on the M.B. ones too....

Hitch them up to an Injector Pop Tester.

Pump it up, and a good Sphere will rise in pressure until a point where pumping doesnt seem to increase the pressure any more, or if you look carefully, the pressure rise is much slower per stroke (Around 50-70 bar for the Citroen)--This is the actual pressure Inside the Nitrogen side of the Sphere....
--Whats happening is the Nitrogen and the diaphragm are compressing slightly with the pumping and as such you can read the actual pressure of the Nitrogen side, without messing round.....

__________________
http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 01:18 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page