Hello messrs. fatboy & ja17 -
I have recently developed what may be the same problem on my own 1969 280 SL, and "developed" is the word as it went from turnable to stuck in one brief tuning session. I had (as I'll bet many others have) recently rationalized the linkage --MANY thanks, Joe-- and went from 1700-1800 revs down to ~1600 with the 2-3 clicks I gave it at the end of that session (without a re-start at that time). After warm-up the next day,adjusting the idle air bleed brought it back up where we started. 'No problem', thought I, and laid hold of the knob. It turns freely until pressed into the IP case, in which position it is immobile in both directions. I have been wondering if I have somehow pushed it off-line from its proper path into some place where the blade could be lodging, and the photos just posted show at least one place --the leaf springs--where this might be happening, perhaps to us both.
And to muddy the waters a bit, just now I learn that all of this is taking place just at or very near a boundary between two separate adjustment systems in the IP. 'Yikes', sez the newbie.
Thoughts, Joe? (As ever, the support of any and all in this group is solicited, nearly crucial and very much appreciated.)
Denny
1969 280 sl 670/904 4spd