Dropped the lower unit today and this is what it looked like. Also the face seal was 2in. above where its suppose to be, What gives?
Attachment 194954
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Dropped the lower unit today and this is what it looked like. Also the face seal was 2in. above where its suppose to be, What gives?
Attachment 194954
Looks like water was in with the oil.
What motor is it? First impression is the seal is on the wrong shaft.
2003 75 2 stroke. That seal was on top of pump housing 4yr. ago. Its the face seal. Don't know what made it slide up?
2003 75 2 strokeQuote:
Originally Posted by wilbur
Yamaha, Evinrude, Johnson, Mercury, Honda, ????
Sorry Mercury
Water is coming out of the housing and pushed the seal up?
Do you run it on the water hose muffs when the engine is not running? The water hose pressure probably pressurized the water pump housing blowing the seal out. Sure that was the right seal?
And where is your exhaust seal? did it stay up on the motor? That what all the strange colors are...soot mixed with all the water gushing from your pump housing.
You bring up a good point. Most people turn the water up way too high. Just open it up a little so the pump pumps the water and its not forced thru from high pressure.Quote:
Originally Posted by Progator135
Never had it on muffs. And yes the right seal.
i had the type seal in the pic when i bought my 90 mercury new. the first waterpump change i did the kit came with a totaly different seal
This is what was in the kit for my engine. Its the same as the first time I changed it.
Im an Evinrude guy.. So excuse me if Im mistaken. Those seals are usually pressed in really tight. There is a good amount of pressure in that water pump housing especially at high RPM's. Are you still getting a good pee stream when the engine is running? If you never had it on the hose...then theres a couple possibilities. There was a blockage causing it to overpressurize and blow the seal. Or the seal was installed incorrectly. Or its the wrong seal. Either way I guess it doesnt matter now - you found it, so get er fixed up with new parts and hit the lake!
From what I hear the seals are to be put on dry. But it it was tough so I used Vaseline which might of caused it. This time I used dish soap which should dry up.
I agree, it appears that the exhaust seal was leaking. The mottled stuff is exhaust. Not a big deal.
How long since the last impeller change?
-TH
It was 4yrs. What about the face seal? What made that move up 2in. Thanks.
If it was greased, and if there is any play in the shaft, working it's way up is no surprise.
The he questions above are good... Did it still pee strong?
- TH
Also, many of the newer impellers do not use that seal anymore.
Did that seal start out under the opening, inside the opening, or was it just slid down on top?
-TH
It was on top of housing. They give you a tool to push it on with as to not push down too far. Its a rubber cup that fits over seal and you push down till the cup hits the surface.
Yes, sometimes the ones that sit on top creep up over time. Probably, if you push and pull on the driveshaft, there will be a little play, which is typical. I wouldn't worry about it, just swap it out and go fishing!
Thanks thill
That 'seal' is known as a slinger. It's purpose is to keep grit away from where the driveshaft enters the pump housing. It rides just above the housing, not in it. I know of no mercury special tool designed for it's installation but using the guide tube does make it abit easier. It's not uncommon for them to migrate up the shaft. Backing off the throttle quickly or 'blipping' the throttle repeatedly will cause it. Among other things. No real concern to have since you are pro actively keeping up with maintenance.
Over pressurizing the cooling system with muffs is all but impossible and there's good reason not to be concerned. The muffs will spread and relieve system pressure if delivery pressure exceeds pump demand. But if pump demand exceeds delivery pressure, the pump will either draw air or create cavitation bubbles. Either of which can damage the impeller. Since positive water pressure is being fed to the cooling system, muffs should not be used to gauge the health of the pump.
The residue on the pump body is of no concern. It being blotchy tells me it's of an oil/water nature. Most likely residue of unburnt two stroke oil that has mixed with contaminates of lake water. If wiped, it should have an oily-grity feel.