Impeller Stuck

[JWehrheim]

I made a puller but I am unable to remove the impeller. Won’t even budge. Any recommendations? Motor is a MP 340

[Bamer]

Put some water based lubricant in the housing around the impeller then bump the key to turn the motor over a little, don’t let it run..... then try using the puller


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[boatwakes]

Or WD-40

[chpthril]

Even dish soap will work

[JWehrheim]

So is it the rubber holding it back or the brass on the shaft? Thanks everyone

[Bamer]

When was the last time the impeller was changed? Has the boat been ran in salt water since last impeller change?


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[JWehrheim]

I bought the boat used last May. Was told it was replaced in 2018. Always been in fresh water.

[KoolAid]

Worse comes to worse, pull the whole Johnson pump off so you can work on a bench. Or replace the pump housing if needed.

[boatwakes]

On the diesel units with impellers the size of your hand we'll spray wd-40 on the blades then crank the motor over to break it free. Then slide the thing out. It's the rubber holding it in place.

[JWehrheim]

Thanks everyone. Finally got it out. What a pain. FYI one trick to install, use a zip tie to compress and get the vains in the proper direction