Impeller change, bravo drive

[diaster]

wow, and the guy I bought this from (Owner 2) was a mechanic. I hadvonly put about 20 hours tops on this ride in two years. Figured i better check the impeller.

This I found in the boat locker. Seems owner 1 kept it as a back up or for reference. R&R 60 hours ago, according to records approx 4 years.



what i just found 60 hrs later...

 

[keith4216]

Don't bash the po. Thats all you.

 

[Gski1969]

Do you need to remove the pulley to get the pump off? I was looking at mine and was hoping to move the fuel filter and take the backside of the pump off to get the impeller and case off? How long does it take 2 hrs roughly ? I am not a master mechanic but hoping I can handle the job.. May need to remove serpent an pulley from rgp's post pics ... Thanks on advance guys

 

[diaster]

Don't bash the po. Thats all you.

The 60 hours is recorded interval per maintenance records. I only put on a 20 hours (less than one season) thought the better of it and checked it anyway. Other issues that a "mechanic" should have handled as a matter of prudence. Regardless, flushed and checked the thermostat housing. All is now good.

 

[diaster]

Do you need to remove the pulley to get the pump off? I was looking at mine and was hoping to move the fuel filter and take the backside of the pump off to get the impeller and case off? How long does it take 2 hrs roughly ? I am not a master mechanic but hoping I can handle the job.. May need to remove serpent an pulley from rgp's post pics ... Thanks on advance guys

I have a big block and pulled my bolts off from the rear. Housing came right off

 

[keith4216]

The 60 hours is recorded interval per maintenance records. I only put on a 20 hours (less than one season) thought the better of it and checked it anyway. Other issues that a "mechanic" should have handled as a matter of prudence. Regardless, flushed and checked the thermostat housing. All is now good.

The impeller had obviously been changed since you have the old one still. Which I hope you didn't use. The boat ran fine for 2 0hr so I think it had been serviced an had dried out due to lack of use. Which happens often. I'd check the oil cooler. That's the first place the chunks will get stuck

 

[sonicss31]

Good advice there.

 

[Gimme Fuel]

Also, depending on your winterization method, it is real easy to roach an impeller like that. If there isn't enough feed of antifreeze or the impeller runs dry trying to suck antifreeze up, it will shred exactly like what you have pictured there. I'm guessing that is what happened. Not lack of maintenance. The amount of powder and dust in there screams "I ran dry and got hot" not "I am tired and cracked".

Here is an experiment you can do at home that shows the principals at work here! Take your truck on nice dry pavement. Do the best power-braking burnout you can. Hold it there for a good minute before letting off and smoke is rolling good from your tires. Get out and look at all of the rubber dust/shavings on the cement and thrown up under your wheel well. Now, do the same thing again only have someone with a garden hose spray your tire and concrete down real good the whole time. Notice how there should be very little to no dust and rubber transfer? The tire should stay smooth and cool.

That is exactly what happens to your sea pump.

BTW, don't forget to take your oil cooler off and dig the bits of rubber out of it. Back flushing is useless most of the time unless you like trying to figure out overheating issues with a brand new impeller installed. Most of it will never make it all the way up to the thermostat housing that you said you checked.

 

[diaster]

I took it to the shop and had them install and check for bits etc gather all bits up and rebuilt impeller blades to confirmed we got it all. Thank you everyone for your assistance!