I have a question for the experts about my '86 Alpha One (gen 1).
I just changed the seal in the outdrive where the input shaft enters. I also replaced the aft yoke and the ring that goes behind it, due to rust damage.
All the bearings looked fine so were cleaned and returned to their original locations and the pack torqued up to specifications. (This set-up has the small spacer between the bearings.)
The same shims were replaced aft of the rear bearing so the engagement of the pinion to the driven gear ought to be the same as before. The shims for the driven gear and shaft were not disturbed. Before I filled the oil, I checked for a backlash click when rotating the drive shaft back and forth, and it was present. I tested the whole re-assembled unit at 11psi overnight.
Later, when I test ran the engine on muffs for a few minutes, everything sounded fine but I noticed that the top of the outdrive had become quite warm. The bottom was cold. I don't know it it ever got warm before but it seems wrong for a no load situation.
So should I pull the drive back off and get a Mercruiser mechanic to check the shimming or do you think it's normal?