Freezing pops seals out of water pump -- Yamaha 100 4stroke

[digger]

I have a 100 HP Yamaha 4 stroke......problem........winter freezing weather has popped the water pump oil/water seals out of the water pump housing (cocked them) causing water to leak into the lower unit gear grease. The dealer said all they've done is pushed em back and locktighted them back in. Have you had an experience, or heard of the problem up in good 'ol AK. I wonder if it is just a bad design for the 100's or if there is a new part, new seal, or different housing that might take care of it. Thanks, Digger

[starcrafttom]

you mean all they have done after replacing the gear case oil...right?

[C-WEED]

Digger: Just wondering. Did this happen with the boat on the trailer? Or boat in the water with motor tipped up? Not positive but I think that lower unit is used on 75 thru 115. I have noticed if I unscrew the fresh water adapter after the motor has drained in the down position on the trailer I get more water out of the fitting. Not sure if this would cuase and trouble but it couldn't help in freezing weather.

[digger]

This happened on a trailer, in my garage, with the motor down. I've just been told that in addition to loctiting the seals in, a drainage hole is enlarged to assist in draining. Got to find out what size to drill out the hole, I guess. Supposedly, the part numbers for current models are still the same. Ron

[Redƒox]

Ron, nope never heard of it up here in old Alaskie!

I always worry about that kind of stuff though (even though it's not happened to me) I always let the engine drain out before I let it sit on trailer in the up position (while trailering home) just to not let sea-water sit in the housing for long, getting stagnant and growing little (itty-bitty) sea-monsters I don't always get a chance to flush it out either.