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W116 Cross Yoke (?)

Started by Mattr, 21 May 2022, 10:02 PM

Mattr

Hey Folks,

One of the bushings in my upper lower control arm is shot (both sides are pretty beat). I suspect that I'm going to spend the winter pulling the engine, and replacing all the rubber components in the suspension. I also want to replace the springs/struts, so this seems like a good time to do all of that.

This raises a question, though: I noticed that my cross yoke.* has been ground in order to clear the bolt for the idler arm. That seems a little unusual. How much clearance is normally there? I know this car was hit in the front right (passenger side) in the past, but I didn't think it was bad enough to justify things like that.


* The body manual referred to the part as "cross yoke". It's the piece that mounts to the frame, and then connects to both upper control arms. If there's a better name/number to refer to it by, please tell me.
1976 450SE 6.9 FrankenBenz (#2288?)
1977 450SEL 6.9 #2333

rumb

The center - idler arm is different on a 6.9.  Not sure the exact differences.

PS, I think I have a spare cross yoke if you need it.
'68 250S
'77 6.9 Euro
'91 300SE,
'98 SL500
'14 CLS550,
'16 AMG GTS

daantjie

Robert I think you mean the drag link, right?  If so indeed yes the 6.9 has a bespoke drag link slightly longer, I think 515mm pin to pin length.
Daniel
1977 450 SEL 6.9 - Astralsilber

UTn_boy

The only things that connect to the upper control arm are the sway bar and spindle.  How are we getting on the subject of drag links and idler arm bushings? 
1966 250se coupe`,black/dark green leather
1970 600 midnight blue/parchment leather
1971 300sel 6.3,papyrus white/dark red leather
1975 450se, pine green metallic/green leather
1973 300sel 4.5,silver blue metallic/blue leather
1979 450sel 516 red/bamboo

rumb

Quote from: daantjie on 22 May 2022, 10:26 AMRobert I think you mean the drag link, right?  If so indeed yes the 6.9 has a bespoke drag link slightly longer, I think 515mm pin to pin length.

yeah, brain was slow this morning...
'68 250S
'77 6.9 Euro
'91 300SE,
'98 SL500
'14 CLS550,
'16 AMG GTS

Mattr

#5
Quote from: UTn_boy on 22 May 2022, 03:39 PMThe only things that connect to the upper control arm are the sway bar and spindle.  How are we getting on the subject of drag links and idler arm bushings? 

It's definitely not the sway bar. It looks like I confused upper and lower control arm, since the lower connects to the yoke. The bushing in question can be seen in the Mercedes Source video below. The question about the yoke stands, though. :)


https://youtu.be/ifNHnRL7_Wg?t=227

Assuming this link still works, it's item number 62 in this photo that I'm referring to:

https://www.picclickimg.com/d/w1600/pict/203784265355_/A1163330177-Mercedes-W116-Lower-Control-Arm-To-Frame.jpg
1976 450SE 6.9 FrankenBenz (#2288?)
1977 450SEL 6.9 #2333

daantjie

Matt  think maybe you mean "63"?  The lower control arm bushing is composite but the yoke itself has a long solid bushing where it connects to the frame.
Daniel
1977 450 SEL 6.9 - Astralsilber

Mattr

Quote from: daantjie on 22 May 2022, 08:11 PMMatt  think maybe you mean "63"?  The lower control arm bushing is composite but the yoke itself has a long solid bushing where it connects to the frame.

Nope. I meant part "62," in reference to this question:

This raises a question, though: I noticed that my cross yoke.* has been ground in order to clear the bolt for the idler arm. That seems a little unusual. How much clearance is normally there?
1976 450SE 6.9 FrankenBenz (#2288?)
1977 450SEL 6.9 #2333

UTn_boy

There should not be anything ground off of the cross bar to allow for clearance of the idler arm control bushing bolt.  It sounds like the idler arm bushing housing and/or the frame rail has been severely bent in the previous wreck. 
1966 250se coupe`,black/dark green leather
1970 600 midnight blue/parchment leather
1971 300sel 6.3,papyrus white/dark red leather
1975 450se, pine green metallic/green leather
1973 300sel 4.5,silver blue metallic/blue leather
1979 450sel 516 red/bamboo