Re: War with lower unit
what did you end up doing? i went bought new waterpump at dealer and they seemed not to be concerned about it said as long as you can get new impeller on. I asked if i should paint it.. they said nah...
I think im going to paint it anyways to prevent future rust going to have to find some good paint though resistant to 2 cycle oils heat etc..
and i need some help after you got your impeller off i beat mine half way up the shaft it got stuck i tried to beat it back didnt work eneded up cutting it with hackksaw 99% of the way then split with a blow on screqwdriver pried it apart got it off.
my question is as i think i knocked something loose? by hammering the impeller down the shaft i shoud of checked this first but didnt. afterwards as im cleaning the shaft i noticed i have up and down play..? the waterpump is not on i just got the brass center of the impeller of and am trying to remove the rust. My question is didi i break something by hammering the impeller up and down the driveshaft? as now it can be pulled vertically up and down ..? is that normal or what did i break?
I used a high Zinc paint. Wasn't overly worried about heat since it's fairly distant from the exhaust ports, so I put a few high build coats of that one and I'm hoping for the best, basically.
I'm sure some will cringe at this thought, but I gently placed a cordless drill on the tension pin on the end of the drive shaft, and spun it while wrapping sandpaper around the shaft first, to take any flakes and high rust pit edges off. The impeller was a slightly snug fit but not too bad. I'm only a little bit worried about any damage I may have caused the water pump seals while sliding down over the shaft
As for your up and down play, you're actually supposed to have a fair bit. Chances are (if I understand things correctly) you've probably simply caused the drive shaft to un-mesh with the pinion gear. Mine had a fair bit of play without the hammering, and I do believe that's why the pin is in the top of the shaft in the first place. It's to keep the proper downward tension/pressure on the driveshaft.
There's nothing in there to break as the gear on the bottom of the shaft is bolted on. If it was "broken" your drive shaft would pull up out of the lower unit, unless you somehow managed to destroy a bearing race. I'd think that unlikely.
