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Like I said when It's empty it dosen't even vibrate it's only once it's pumping. I wish I knew how to pull the impeller.
Is that the whole impeller visible in the opening of the volute? If so, un-bolt the other side of the volute and remove it.
Then to determine whether the impeller slides on, or threads onto the shaft.
Looking at the parts I could find via Google, it looks like the impeller presses onto the shaft. And then a nut on the end of the impeller to lock it into place.
So i'm leaning towards the impeller being pressed onto the shaft.
If that is the case, then you can use either a large gear puller to pull the impeller off. You need to make sure and take steps to preserve the threaded portion of the shaft.
Or you can use some tapered splitting wedges and a hammer. Tap the wedges between the impeller and the case to press the impeller off.
Now..... depending on how old the pump is, and whether or not anti-seize was applied to the shaft before the impeller was installed. The impeller and the shaft are probably bonded at this point.
So plan on inventing many new cuss words when trying to remove it.
I've had some that I've had to use a combination of the larg gear puller, putting the impeller under pressure, and then tapping in splitting wedges behind it.
I searched, but haven't been able to find a photo of the impeller.
If it threads onto the shaft, then lock the shaft on the pto side, and use a rock bar to unscrew the impeller.
That can be a bugger as well. I had one being stubborn yesterday.
I had to slide the handle to my 3ft rigid steel pipe wrench into the impeller, and then use a crane to pry up on the pipe wrench to get it to spin loose. This was while the pump end was still bolted to the diesel engine and trailer frame.
I'm pretty positive though that yours is pressed onto the shaft though.
