Thought I would post here what I ended up with to tighten the Alternator belt. The C36 tech column discussed several methods I've used, including ratchet handles, Supco tensioners. Taking a cue from hot riddlers I built a tensioner with heim joints. I finally got it to fit without running into my oil lines.
It works great!! I can micro adjust and unlike the Supco, it keeps the tension exactly where I set it.
this works on the M35 with the adjustment going over the top of the alternator, with a bonus of not needing the short arm I have on mine.
Les & Trish Troyer
1983 C-36 Hull #0094
C-36 MK 1 Technical Editor.