See the CAD version here
As I switched from a Shovelhead to a Panhead motor, the belt
was hanging too far outside, so I decided to replace the mainshaft
and while I was at it the housing as well, although that was
not strictly necessary I thought it would look better. I pulled
the clutch and removed the front sprocket, and took some "before"
I like to put all the small parts in baggies, keeping it
all organised is quite helpful when the time comes for reassembly
ofcourse. I made a little aluminium plug to make sure the puller
would not split open the mainshaft, completely stripping the
grarbox took about 2 hours.
As you can see the Andrews mainshaft (model 1937-1964) is
quite a bit shorter than the newer one, because back then Harleys
did not have alternators or electric start. Other than the length
they are pretty much identical.
Next job was measuring all the parts to see if all tolerances
were in spec. Most was quite good but I had to irder a few small
parts. I also discovered there were already some Andrews gears
in there, nice! As I write this the parts have arrived so as
soon as I find some time I will put the transmission back together!