I was able to get all the guts apart from the lower unit today, other than
the impeller that seems well attached to the drive shaft. It’s not critical
that it comes off anyway, so I’ll leave well enough alone before I break it.
I tried ice cubes in the gear case to shrink the drive shaft bearing race.
I let the ice sit for about an hour, and kept adding. Then got the torch
out and heated it up nice. Slapped the skeg down on the bench a
bunch of times, and rapped on the housing hear the race with a wood
mallet. …….. and…… Nothing happened!
Therefore, I devised a tool to get at the hidden side of the race.
A piece of bent, sharpened metal strap, that hooked the back of the race (barely).
I helpd pressure on the strap tool with a big screw driver as I hammered
on the tool via the drive shaft bore, with a tire iron. I alternated doing this
and prying on the visible side of the race with a screw driver. Pretty
soon it popped out!
Now, the bigger challenge perhaps……. finding parts.
The drive shaft tapered roller bearing and the prop shaft tapered roller bearing
both use the same race / cup, but different bearings. Those I’ve found
available so far. I’m not finding the two cones / bearings, but it may be
I have the numbers wrong. Very hard to ready the numbers on them from
all the rust and corrosion.
The two said cups / races are 05185
The Drive Shaft cone /bearing looks like 05079 (iffy on the middle 0 and the 9)
The Prop Shaft cone / bearing looks like 05056
The Drive Shaft ball bearing looks like ND 3205 (iffy on the 3)
If anyone has bearing numbers for the 6039 Speeditwins in their database,
I’d be grateful to know what’s correct.
I suppose it’s theoretically possible to make a new prop shaft, I’m not sure I’d
be successful. Were they machined first, then heat treated for hardness?
Prepare to be boarded!
