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  #1  
Old 07-22-2022, 10:30 AM
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84 500SEL too much slack in the steering gear box.

I have too much slack ....although I adjusted the box 3 times already ... with not much success.
The rest of the steering connections have no slack as far as I can see.. So it is the steering box.

As this is one of the early gear boxes (I believe it is the Gen1 gear box with the straight arm) there is only a limited amount of wear that can be compensated.

Now I bought a used late Gen3 W126 gear box because this one has the larger compensation option with a better chance of success.


Now my many questions -to those who know- about the preparation of this 'new' box for install in my 1984 500SEL

1. Do I need to swap the straight arm from the old box to the new box? Or can I use the new arm?
In case of the arm swap: That arm is sitting quite tight on the splices. Is there a good puller that works here?
2. With the new box on the bench I feel play in the arm, as soon as the arm is leaving the Center area.
But there is no obvious play in the Center area.
Is that play in the periphery acceptable or would you pre-adjust the box before installation? Any protocol for the prep on the bench while the box is easily accessible?

Best, Martin

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  #2  
Old 07-23-2022, 10:01 PM
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Anyone with some knowledge of the W126 steering gear boxes?

This is a pictures of the 3 Generations of the boxes.
I have the early Gen 1 gear box with the straight arm in my car (no adjustment possible any further) - right gear box in the picture

Gen2, also with a limited adjustment in the middle (curved arm)

Gen 3 with larger adjustment and the curved arm on the left side. I bough this box.

Any advise how to prep the Gen3 box before install?


Martin
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84 500SEL  too much slack in the steering gear box.-290022408.jpg  
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  #3  
Old 07-23-2022, 11:35 PM
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w:

1) All steering boxes are tighter on-center than off-center.
2) You might send an email or PM to "Martureo" (sp.?) on this forum, steering boxes are his specialty.
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  #4  
Old 07-25-2022, 03:32 AM
Daantjie
 
Join Date: Nov 2014
Location: Vancouver, BC, Canada
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Check out online post by David Petryk. Lots if good pics and info.
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  #5  
Old 07-25-2022, 11:20 AM
t walgamuth's Avatar
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Join Date: Apr 2005
Location: Lafayette Indiana
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Be sure to turn the adjusting allen head anticlockwise to tighten. I have had good luck adjusting boxes with more than 300K on them.
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  #6  
Old 07-25-2022, 12:56 PM
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Quote:
Originally Posted by t walgamuth View Post
Be sure to turn the adjusting allen head anticlockwise to tighten. I have had good luck adjusting boxes with more than 300K on them.
Yes, I adjusted my current gear box CCW! 3 times with not noticeable improvement. It is leaking oil in addition and is the Gen1 gear box which has a limited adjustment capability.

Martin
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  #7  
Old 07-25-2022, 02:25 PM
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Thanks Frank,

I did pm martureo...see if he is responding.

Martin
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Old 08-11-2022, 07:12 PM
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Quote:
Originally Posted by daantjie View Post
Check out online post by David Petryk. Lots if good pics and info.
Hi Daantjie,

thanks for the note. I'll probably reseal the 'new' gear box. It doesn't seem to be overly complicated
I ordered the Febi Kit which should be the same as the MB kit 126 460 00 61.
Best, Martin
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  #9  
Old 08-12-2022, 01:36 PM
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Quote:
Originally Posted by werminghausen View Post
Thanks Frank,

I did pm martureo...see if he is responding.

Martin
His rebuilds are solid.

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