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 04-23-2003, 12:24 AM
Registered User
 
Join Date: Mar 2003
Location: Houston, Texas USA
Posts: 59
1984 300SD Springs

Is it normal for a 300SD to tilt when a 190 pound man sits in the car? My 1984 300SD has 131,000 miles, new Bilstein shocks, and is in good condition, but when I sit in it, the vehicle tilts. Jacob Wissler Jr http://www.jacobwissler.com

Reply With Quote
  #2  
Old 04-23-2003, 12:27 AM
edge's Avatar
Registered User
 
Join Date: May 2001
Location: CT
Posts: 1,398
Is it the car or just the seat spring?
Reply With Quote
  #3  
Old 04-23-2003, 01:41 AM
Registered User
 
Join Date: Jan 2001
Location: California
Posts: 2,068
More likely the shocks are shot than the springs...
Reply With Quote
  #4  
Old 04-23-2003, 06:22 AM
Registered User
 
Join Date: Mar 2003
Location: Houston, Texas USA
Posts: 59
300SD Leans

The entire driver side of the vehicle is a bit lower when I sit in the car. If I get out and walk around the car and sit in the passenger seat, that side of the car then sinks down a bit. The shocks (Bilstein) were just replaced. The vehicle handles well and tire wear is normal. Jacob Wissler Jr http://www.jacobwissler.com
Reply With Quote
  #5  
Old 04-23-2003, 09:52 AM
Registered User
 
Join Date: Jan 2000
Location: PA
Posts: 5,440
Jacob,

That sounds normal. When you apply force to a spring, it compresses proportional to its coefficient of ......duh...... springeyness. Someone help me with the correct word.

The shocks, which really are dampers, don't control vehicle height, they damp the oscillating motion of the springs, which are the true shock absorbers.

P E H
Reply With Quote
  #6  
Old 04-23-2003, 11:43 AM
surfblau's Avatar
neue Dieseler
 
Join Date: Feb 2002
Location: san francisco - immer kalt, immer windig, I want to move
Posts: 382
my 87

My 87 is the same chassis and has a similar issue, but the imbalance is not so much right to left as it is front to back. Since I normally drive, I really don't notice it too much. But yesterday, my 180 pound wife (60 of it is a baby due in late july) drove while I followed in the other car.

The car was slightly lower on her side, and definately lower in the back than it should have been. Trunck was empty.

I called a part supplier, and he said the rear springs on 126s are notorious for aging poorly. He also drives a 126 and just replaced the springs (with the heavy duty) and said that the difference was amazing.

So I ordered some springs. It will be a few weeks til I can get them in, but I will get some before and after pictures and measurements to confirm what I suspect- my rear springs are shot.

alec
__________________
84 300TD - 235k - Farbe "Surfblau" bought at 213k
87 300SDL - 131k - Farbe "PimpGold" bought at 115k
00 Klepper Faltboot Expedition Double
Reply With Quote
  #7  
Old 04-23-2003, 01:51 PM
Registered User
 
Join Date: Mar 2003
Location: Houston, Texas USA
Posts: 59
New Springs

How much do new springs (for 126 300SD) cost and how many hours labor to install? This sounds expensive.
Reply With Quote
  #8  
Old 04-23-2003, 02:00 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,800
Rear springs are $65-70 each from FastLane.

With the right spring compression tool it's a pretty easy job. You can probably replace them in an hour each taking your time. I don't think anything other than the shock has to come off in a 126. Maybe the sway bar link so the trailing arm can drop as much as possible.

Sixto
91 300SE
87 300SDL
83 300SD
Reply With Quote
  #9  
Old 04-23-2003, 02:16 PM
surfblau's Avatar
neue Dieseler
 
Join Date: Feb 2002
Location: san francisco - immer kalt, immer windig, I want to move
Posts: 382
tool rental

Sixto has it about right from what I have heard.

The guy at the parts place said it was basically required to use a spring compressor. Rental is $75 for three weeks. Rusty.mbz.org and ************************ both have compressor rentals, but there may be a waiting list of a few weeks to get on the list.

My friend who has a subaru wrx has changed all the springs on his car a couple of times at a local shop. I think he usually pays around $200 for the installation. That is just a ballpark if you do not do it yourself- it might be much higher if you don't have a good relationship with your local shop.

For the record, the subaru owner (who knows everything about cars except how to repair them) told me that it was fairly common on performance cars to replace the shocks and springs at the same time...usually around 100K miles on a high performance car. I am not sure if that means anything at all to us MB owners, but that is what he said.

I will be doing it myown installation in a few weeks.

alec
__________________
84 300TD - 235k - Farbe "Surfblau" bought at 213k
87 300SDL - 131k - Farbe "PimpGold" bought at 115k
00 Klepper Faltboot Expedition Double
Reply With Quote
  #10  
Old 04-23-2003, 02:39 PM
Registered User
 
Join Date: Mar 2003
Location: Houston, Texas USA
Posts: 59
Front or rear springs?

Do I need to replace the front springs at the same time I replace the rear?
Reply With Quote
  #11  
Old 04-23-2003, 03:32 PM
surfblau's Avatar
neue Dieseler
 
Join Date: Feb 2002
Location: san francisco - immer kalt, immer windig, I want to move
Posts: 382
I doubt it

I am not planning to replace my front springs (at this time).

Currently, when viewed from the back, the rear wheels angle in towards each other like this //-----o------\\

nice rendition of an axle.

Meanwhile, the front tires are always ||-----o-----||

even under high load.

Based on the visual evidence, and what 5 or so other people have said, I am going for the rear springs only.

For the record, I have already put in
- 4 new bilstien shocks
-
Reply With Quote
  #12  
Old 04-23-2003, 03:32 PM
surfblau's Avatar
neue Dieseler
 
Join Date: Feb 2002
Location: san francisco - immer kalt, immer windig, I want to move
Posts: 382
I doubt it

I am not planning to replace my front springs (at this time).

Currently, when viewed from the back, the rear wheels angle in towards each other like this //-----o------\\

nice rendition of an axle, the lean is not that severe, but it is very noticeable.

Meanwhile, the front tires are always ||-----------||

even under high load.

Based on the visual evidence, and what 5 or so other people have said, I am going for the rear springs only.

For the record, I have already put in
- 4 new bilstien shocks
- new tires
- new rear subframe mounts
- completely rebuilt front end
- rear sway bar links
- I think that is about it that could possibly be related....

alec
__________________
84 300TD - 235k - Farbe "Surfblau" bought at 213k
87 300SDL - 131k - Farbe "PimpGold" bought at 115k
00 Klepper Faltboot Expedition Double
Reply With Quote
  #13  
Old 04-24-2003, 03:01 AM
Registered User
 
Join Date: Jan 2000
Location: PA
Posts: 5,440
Jacob,

It is not necessary the change rear and front springs at the same time but they should always be repaced in pairs side to side.

A cheap fix is to get "Load Lifters" (LL) or whatever they are called. These are wedges that are 'screwed' between the coils of the springs. I carry heavy loads frequently and these LL work for me. LL should be available from a generic auto parts store for a couple of dollars. LL are turned into the springs (with load off the spring) with a 1/2 inch ratchet with extension. Put a little grease on the LL to make them easier to turn.

P E H

Last edited by P.E.Haiges; 04-24-2003 at 03:08 AM.
Reply With Quote
  #14  
Old 05-12-2003, 04:33 PM
surfblau's Avatar
neue Dieseler
 
Join Date: Feb 2002
Location: san francisco - immer kalt, immer windig, I want to move
Posts: 382
I finally got mine in

So I finally got my new rear springs in. The guy at the parts counter talked me into the "heavy duty" springs, and I think it was a good idea.

It took 3 hours, 2.25 for the first, 30 minutes for the second. A little hair raising with the spring compressor at the beginning, but not bad once you get the hang of it ($75 rental fee was worth it).

Results: The handling is better, maybe much better, but I haven't had a chance to really push it. The /----0----\ view from the rear is completely straightened out, and under load, it doesn't seem to drop the way that it used to. The car is level or even slightly higher in the rear, compared to before where the front wheel well was higher than the rear.

All in all, I am really pleased. My SDL looks like it should.

alec
__________________
84 300TD - 235k - Farbe "Surfblau" bought at 213k
87 300SDL - 131k - Farbe "PimpGold" bought at 115k
00 Klepper Faltboot Expedition Double
Reply With Quote
  #15  
Old 05-12-2003, 04:38 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,800
I replaced the shocks and subframe mounts in my SDL and now it sits high in the rear. The rear wheels are ever so slightly in the \==0==/ mode like an old VW or a Heckflosse with a bad compensator spring. I hope it settles with time.

Sixto
91 300SE
87 300SDL
83 300SD

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 10:46 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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