Hello everyone how are things going? Quick question.I was wondering if someone could tell me how to get an actual picture of the bowden cable and where and how to adjust it for a 1992 300 sl with a 722.5 5 sp trans.My baby doesnt seem to downshift when I need that extra boost. Im hoping adjusting it will help.Thanks in advance for the help.You all always come through.
Thanks Peter

It's pretty simple really; just like adjusting the brake lever on a bicycle.
I don't have a photo reference handy, but there are a few herein; just do a search on Bowden cable or cable adjustment.
All the ones I've seen all have the same adjustment spec - zero play in the inner cable just as the throttle comes off the idle stop.
Find the end of the cable with the ball socket that snaps onto the throttle linkage. Pop it loose. Be sure the throttle linkage is fully closed in the idle position. Pull gently on the cable until you just feel it engage down in the tranny and begin to move the lever down there. At that point if the ball end will just snap onto the throttle linkage, then it's adjusted right - you want to just take up the cable slack so that the lever in the tranny just begins to move at the same time as the throttle lever.
To adjust the cable, look on the cable sheath where it goes thru the bracket just behind the throttle connection, there will be a white plastic nut on the end of a threaded shaft on the sheath. Turning the nut to adjust the length of the cable sheath, and adjust the throw on the inner cable, and how the transmission internal lever moves in relation the the throttle linkage.
If the throttle inner cable is too long, the throttle linkage will move before the cable begins to tighten and won't move the tranny lever soon enough. In this case, lengthen the sheath by turning the nut counter clockwise when looking from behind the nut towards the throttle end of the cable. You are just unscrewing the cable end, making it longer, and tightening up the inner cable. If the inner cable is already too tight, and has begun to move the tranny inner lever while the throttle is still closed, then shorten the sheath by turning the nut Clock wise.

In summary, to delay the shifts, shorten the outer sheath cable by turning the nut CW (when looking down the cable towards the throttle linkage .
To speed up shifts, turn the nut CCW.

Try it about 1/4 to 1/2 turn at a time to see how it affects the shifting.
of course, the vacuum modulator valve on the tranny has a great voice in the shift pattern, providing shift inputs based on engine vacuum. So, sometimes it's a balance between adjusting the cable and the modulator to get an acceptable shift pattern under all driving conditions.

DG