TN28 extra parts mid section

[bonzoscott]

Can anyone identify what and where these parts go? I am trying to revive a 52 TN28 and while trying to put the drive shaft back up the drive tube this is what blocked the path. So it had to have come loose when I removed the lower unit and shaft. It is about 1/4 inch larger than the shaft and for the life of me, can't figure where it goes. Appreciate any input...

 

[5150abf]

Re: TN28 extra parts mid section

I am geussing here but I would thnk it is a seal on the bottom of the powerhead, maybe shine a light up inside the leg and see if that is where it goes,a s I sadi just a geuss but if it isn't part of the lower that has to be where it came from.

 

[F_R]

Re: TN28 extra parts mid section

Good guess. It is the lower crankshaft seal, less the spring. Actually it is not a real seal, but more of a shield to keep water away from the bearing, where it could be sucked into the crankcase. Problem was, water could get past it (red arrow). So.......they came out with a "real" seal modification kit, a carbon seal. Very effective, but probably unobtainable nowadays.