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Anyone have any good tips to remove the raw water pump impeller? They always seem to pull out hard, but I am really struggling to get it out this year. With all the smart engineers we have in this country you would think they could put a part that needs replace each year in a more accessible spot! [emoji35]
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If you have cover off, spray impeller with WD40 then take need nose pliers and grab a rubber vane and wiggle it, work your way around in one direction grabbing a vane and wiggling, it eventually pops free
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WD40 soak. Then bumped the motor a few times. Came right out with needle-nose pliers on my SL.
Yea, weird spot with th a plastic cover back there.
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Trick was getting that first 1/4" to move.Quote:
Originally Posted by MJHSupra
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Good tip. Thank you. I got it out after some cussing and snorting. [emoji23]. It was really stuck in there this year. I have never had that much trouble getting it out. Maybe I am getting weaker. Ha ha.
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Impeller puller tool.
Didn’t even know they made one. Good to know! I am all about having the right tool for the job.
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2 paint can openers to pry it out.
https://www.discountmarinesupplies.c...BoCoYcQAvD_BwE
or you can buy the Jabsco one:
https://marinepumpdirect.com/jabsco-...BoCOP4QAvD_BwE
Discount Marine @ $34 to $36 is a good deal. I assumed $100 for the tool.
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WD-40 and a paint can opener pops it right out.
First year owning the boat so replaced mine this fall...couldn’t get the impeller slipped out so unbolted the entire pump (3 Allen bolts on engine pulley and 1 on the “holder”)
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I also found removing the entire pump easier and allows more room to get a grease gun on the rudder zerk fitting. I use 303 to free the impeller, coat it in Vaseline and put it in a zip lock for the winter.
I would highly advise against coating an impeller in a petroleum based grease. if you feel the need to coat it in anything, say to keep it from "drying out", for storage, use 100% silicone.Quote:
coat it in Vaseline and put it in a zip lock for the winter.
I think when you buy the ballast impeller kits they come with a small tube of glycerin grease, but I do not recall ever viewing that in a big box store, but you can find silicone multi purpose water repellent grease.Quote:
Originally Posted by MLA
I've used both Vaseline and silicone grease and didn't see any difference in impeller life. Main benefit of removing the impeller from the pump is to relax the fins.
Likely do, for the initial installation. But most would likely not have any left for coating and storing a removed impeller at the end of season.Quote:
Originally Posted by MJHSupra
I understand the thoughts for pulling it. The concern is that petroleum based products can deteriorate and swell the impeller material, if its not designed for constant contact with that type of grease.Quote:
Originally Posted by VA LSV
Been doing it this way for 14 seasons with no swelling or deterioration.Quote:
Originally Posted by MLA
Remove impeller, coat with a thin film of Vaseline and store in an airtight bag is part of the winter layup procedure in the Indmar manual that came with my boat.
Pull out old impeller with an impeller puller, saves a lot of cussing. Take the old one out coat in Vaseline/silicon spray insert it into a ziploc bag and put it in your glove box with a new seal in case you have a failure on the water. Take the one that was in the glove box and put it on a shelf to show how many you have changed. I will never understand why you would try to save $40 on an impeller that is the heart of a cooling system on a boat that you will expect to run perfectly all summer. I guarantee most of us spend more than that on the first Beer run of the summer. Put a new one in EVERY year and pinch pennies somewhere else.
every other year for meQuote:
Originally Posted by JesseC
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I would go by hours versus seasons. I average about 40 hours a season, so I changed mine after season 2.
If I was running 200 hours per season, I would do it annually.
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For sureQuote:
Originally Posted by larry_arizona
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Only way I would do this is if you pull it out at the end of the season and re-install at the beginning of the next. I still prefer to put in a new one every season. I have had one rip a fin off because it was left in all winter and run again in the summer (run hours were less than 50 for 2 seasons). After I found that, I replace it every season, seams silly to pull it out only to put a used one back in. $40 impeller can save a $60K to well over $100K boats.Quote:
Originally Posted by larry_arizona
I inspected the impeller when winterizing and most times they lasted three seasons.i carried a spare impeller as everyone should do anyway. If you had a catastrophic failure of the impeller on the water (very low probability), you need to know that you can still run the boat on plane to get back to your launch site. The impeller does nothing when the hydrostatic pressure is high such as being on plane.
I use a puller, remove it for winter and use it one more season. After two summers it gets replaced.
If you guys are removing or inspecting your impeller each season, you really need to install a new crush gasket to prevent any sort of leaks as those are 1 time use gaskets. Just a heads up to keep an eye on it.
Replace mine every year which is about 100 hours.
Agreed. When I was a kid we had an impeller disintegrate. It took 2-3 trips before all of the rubber pieces were flushed out. The boat overheated for at least two trips. It is a cheap piece of mind for me. Let’s face it. If we can afford these boats, we can afford a $40 impeller.Quote:
Originally Posted by JesseC
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Using a petroleum lubricant, especially one with solvent properties (WD40) on nitrile or rubber gaskets scares me as well. You are probably OK but a good alternative is a slightly diluted dish soap in a spray bottle to lubricate old impeller to help with extraction. I endorse the paint can openers but take several with you as mine bent.
As far as frequency of changing, I spend the extra and put in Globe run dry impellers which I change every 3 seasons (about 150 hours) and have never had a failure since switching to Globe in previous inboards.
Read about those online. Some of the Offshore Boat crowd felt they did not push the same amount of water and ran the engine(s) run 10-15 degrees warmer. Others thought they worked as good with the pressure and better for long-run duration b/c they are a silicone impeller (more temperature resistant and have greater resistance to sand and dirt abrasion.) vs a black rubber impeller.Quote:
Originally Posted by AtTheRiver
I guess for the people changing-out every season (say 100 hours), it might not matter b/c I would assume there are a low number of failures with the rubber impeller or silicone ones.
Did you notice an temp changes on your boat?
Is this the part number you are running?
https://www.bakesonline.com/johnson-...rvice-kit.html
https://www.bakesonline.com/globe-10...-f6b-pump.html