W126 LCA bushing installing in w123 LCA - PeachParts Mercedes-Benz Forum

vstech · #1 10-04-2014, 11:28 PM

The LCA's are the same, the mounting points are the same, but I can find little info on the installation of the bushings.

The center puc gets installed right side up with the fat areas parallel with the arm... Ok.

The outer pucs must get pressed into the center puc shaft, and the metal edge of the outer pucs must be pressed into the LCA. BUT ACCOMPLISHING THS RESULTED IN DAMAGE TO THE OUTER PUC...

I think a machine shop tool needs to be made to do this without damaging the outer part...

If there is experienced installers on here that have successfully done this and can offer tips or pics, I'd be grateful...

my123ca · #2 10-05-2014, 12:14 PM

No 300SD owners ever done their LCA bushing? I need to do this soon and want to use w126 bushings. This is all I have(from other members):

Stretch · #3 10-05-2014, 01:46 PM

I've not done this John but looking at the instructions posted by my123ca the first step looks like it needs to be done by pressing only on the black part of the inner bushing.

When pressing the caps into place you need to make sure the silver part of the inner bushing is not pushed through the outer black part. The idea must be to not rip the silver bit out of the black bit!

With various supporting bits - say sockets - and your hydraulic press you should be good with a bit of KY jelly too.

RoxanneIsMyFAST · #4 10-05-2014, 03:41 PM

So whats the benefit of using w126 bushings on a w123 verse using the correct w123 bushings?

Diesel911 · #5 10-05-2014, 04:16 PM

The w126 bushings are listed in the W123 Parts Catalog as an alternate part on Police Cars and ones that have 15 Inch Wheels. People beleive the w126 bushings to be a more heavy duty part.

Some People don't like the regular W123 LCA Bushing because the Aluminum Tube needs to be flared

Diesel911 · #6 10-05-2014, 04:28 PM

Hunter in Post #6 of the below Thread:
DIY W126 Guide Rod, lower control arm bushing and Eccentric Pin Replacement
"Install the new inner control arm bushing caps, (a heavy thread or light fishing line works well to hold them in place for body installation).

A press is nice, but not critical. Note: Some of the aftermarket repair kits will fail to remain pressed together.The caps can be held in position with a heavy thread or light fishing line, while jacking the arm into the body bracket.
The body bracket applies enough compression for initial seat, and the eccentric bolt completes the compression seating.

With a spring compressor, this is a relatively easy DIY. Note: Unless there is extreme corrosion seizing the eccentric in place."

vstech · #7 10-05-2014, 09:04 PM

Quote:

Originally Posted by Stretch

I've not done this John but looking at the instructions posted by my123ca the first step looks like it needs to be done by pressing only on the black part of the inner bushing.

When pressing the caps into place you need to make sure the silver part of the inner bushing is not pushed through the outer black part. The idea must be to not rip the silver bit out of the black bit!

With various supporting bits - say sockets - and your hydraulic press you should be good with a bit of KY jelly too.

This is exactly what I was looking for...

The only instruction I could find was about the fishing line method, implying that pressing the caps in place was bad.

I still need clarification about how to orient the center part, flat vs wide part aligned with the arm...

Diesel911 · #8 10-06-2014, 12:25 AM

If you can get it to work I think this leads to a W126 Service Manual Untitled Document [this one works but slow]
Came from SERVICE MANUAL INDEX - Mercedes-Benz Forum

Stretch · #9 10-06-2014, 08:50 AM

I've just checked and the assembly procedure for the W126 3 part bushing is also detailed in the W123 FSM chapter 33-520!

The flats on the bushing need to be parallel with the flat part of the outer part of the control arm. This outer flat bit is the flat bit on to which you screw down the saucer for the spring.

There's a picture and everything => para 7

vstech · #10 10-06-2014, 03:28 PM

grr. both the 126 and the 123 manuals, section 33-520 is missing....

Diesel911 · #11 10-06-2014, 10:48 PM

Quote:

Originally Posted by vstech

grr. both the 126 and the 123 manuals, section 33-520 is missing....

It is in My W123 CD #2.
What I found is there if you use the normal method to look up stuff there not everthing shows up in the Menues.

If you look at the CD as if you were looking a file folder go to Program and open that file. When you do that you will see the Chassis File Folder and a list of PDFs. Find the Number given by stretch and that should be the one.

Stretch · #12 10-07-2014, 02:35 AM

Quote:

Originally Posted by vstech

grr. both the 126 and the 123 manuals, section 33-520 is missing....

Quote:

Originally Posted by Diesel911

It is in My W123 CD #2.
What I found is there if you use the normal method to look up stuff there not everthing shows up in the Menues.

If you look at the CD as if you were looking a file folder go to Program and open that file. When you do that you will see the Chassis File Folder and a list of PDFs. Find the Number given by stretch and that should be the one.

You can also figure out the URL to the startek site and get it here =>

http://www.startekinfo.com/StarTek/outside/12265/disc_2/program/Chassis/33-520.pdf

vstech · #13 10-07-2014, 07:50 AM

Quote:

Originally Posted by Stretch

You can also figure out the URL to the startek site and get it here =>

http://www.startekinfo.com/StarTek/outside/12265/disc_2/program/Chassis/33-520.pdf

Thank YOU!!! this worked perfectly, and totally explains precisely what is needed! wonderful. I've GOTTA GET THE PAPER FSM!!!

Stretch · #14 10-07-2014, 09:12 AM

Just print out the chapters from startek as you need them and save them in a ring binder?

greazzer · #15 10-08-2014, 01:17 PM

So, was the code cracked ???

How long "should" this procedure take ?

Any feedback from John ???