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
  #1  
Old 06-22-2011, 07:31 AM
Registered User
 
Join Date: Jan 2006
Posts: 292
1983 300TD hits bumps hard in rear.

My 1983 300TD hits bumps hard in the rear. I have replaced the accumulators and there is no leaks. Question is, If the springs where a little saggy and the self leveling system was holding her up in the rear it would ride hard?
Thanks.
Jay

__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "
Reply With Quote
  #2  
Old 06-22-2011, 09:01 AM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,423
new spheres and still bumpy?
how's the ride level? did you bleed the fluid out of the system? is the pump working? is the valve working? Is the Valve adjusted for center?
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #3  
Old 06-22-2011, 05:17 PM
Registered User
 
Join Date: Jan 2006
Posts: 292
She is level and rises when loaded up. Its not that bouncy and banging ride you get when system is not working. When I say rough, I mean hits harder then front. When I hit a bump/pot hole it soaks up the bump in the front and seams to bang in the rear. Feels like the rear shocks are a lot tighter in the rear then front. Now I know that the shocks will be tighter when shes loaded up. Just wondering if I had the shocks taken out and had new springs should she sit level? Because before I replaced the accumulators it would sag in the rear if not driven for few days. So she must be keeping the rear held up with the shocks, and that's where the hard ride is coming from.
__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "
Reply With Quote
  #4  
Old 06-22-2011, 05:22 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,350
There are no shocks in the rear. There are hydraulic rams that look like shocks. The shock absorbing is done with the accumulators. The system is designed so that part of the load is carried on the springs and part carried on the hydraulic rams under all conditions. This is not to say your springs aren't worn or broken, just that removing the hydraulic rams will result in a system not robust enough to carry the load of an empty wagon.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #5  
Old 06-22-2011, 05:42 PM
Renntag's Avatar
User Especial
 
Join Date: Jul 2008
Location: Kona, Hi
Posts: 1,396
I think the system should be better evaluated. By description its hard to ascertain what is going on exactly. The dynamics of bump absorption are very different front to rear simply because the systems are very different from each other.

Weight is biased toward the rear so the rear has more to handle. It is always going to seem a little more of a rough hit to the rear...Maybe drive backwards at the same speed over the same bump. Any different? (Just an absolutely crazy thought).
__________________
83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.
Reply With Quote
  #6  
Old 06-22-2011, 06:59 PM
Registered User
 
Join Date: Jan 2006
Posts: 292
System was checked and is working like it should. Going to replace the springs. I'm sure there stock and would not hurt to put in new pair. I relived pressure on system and she sits low. I'm sure with no load aboard it should not drop so much. Thanks everyone.
__________________
83 300TD Sable 402K " Work Truck "
81 300SD Gray 240K " Loner Car "
04 E320 Blue 90K " My Winter rig "
07 BMW X5 4.4 118K " My Summer rig"
04 Jetta TDI Wagon 168K " Wifes "
08 Toyota FJ 109K " Wifes winter rig "
04 Jetta TDI 120K " Daughters Car "
Reply With Quote
  #7  
Old 06-22-2011, 07:04 PM
Registered User
 
Join Date: Jan 2002
Posts: 18,350
Quote:
Originally Posted by Targa-NF View Post
System was checked and is working like it should. Going to replace the springs. I'm sure there stock and would not hurt to put in new pair. I relived pressure on system and she sits low. I'm sure with no load aboard it should not drop so much. Thanks everyone.
I believe there are specs in the FSM to measure this if my memory serves me correctly. It should sit lower with the pressure relieved. There may be a thread on here somewhere which states exactly how much that is.
__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
Reply With Quote
  #8  
Old 07-17-2011, 06:43 AM
Registered User
 
Join Date: Jan 2002
Location: England
Posts: 1,841
Any luck with this?

__________________
190E's:
2.5-16v 1990 90,000m Astral Silver
2.0E 8v 1986 107,000m Black 2nd owner
http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg
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 04:27 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, 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