Thread: pump bearings removal tips
11-02-2013, 06:31 PM #1
pump bearings removal tips
I sent k447 a pm with some bearings questions, posting this here so everyone can benefit.
Original message sent to K447:
Sorry to bother you with this but I'm just lost trying to replace my bearings and o-rings.
my rebuild kit came with no instructions or anything just rings and bearings.
I've read through the section on your link about pump bearings. I'll attach a picture of my pump, i'm not really sure whats left of my bearing or how to remove it.
if you could point me in the right direction on where to get started with all these o-rings and those 2 large rubber pieces that'd be great also.
Re: lost with my pump rebuild
Originally Posted by K447
Hope this helps anyone with bearing questions, I know it helped me
Last edited by K447; 11-02-2013 at 10:00 PM.
11-04-2013, 11:24 AM #2
if thats your pump don't fix it,find a s/s 6 vane for it
11-27-2013, 05:42 PM #3
Originally Posted by CJ's gpr
- Join Date
- Jul 2007
- near Toronto, Canada
All Polaris stub shafts are the same size and length. There are some specially hardened and aftermarket stub shafts, but they still fit the same sawy.
The old stub shaft is still encrusted with a bunch of inner bearing races and spacers from the old stator. If you want to re-use the old inner spacer or the impeller spacer, you will need to unscrew the old impeller first.
The impeller is typically screwed onto the sub shaft with about 100 ft-lbs of torque. Then when the engine is running it can further tighten the impeller. I would NOT attempt to remove the impeller using a 'good grip' on the impeller. Buy the proper tool for $20 or less. It fits all Polaris impellers. And it fits impellers for several other watercraft brands, not just Polaris.
Put the end of the stub shaft with the flat sides into a hefty bench vice. Use the impeller removal tool along with a hefty breaker bar wrench to loosen the impeller and unscrew it from the stub shaft.
Right behind the impeller is the impeller spacer. This is made from stainless steel and is what the rubber seals ride on when the new parts are re-assembled. Replace if it is grooved, worn, damaged or no longer 'true'.
In between the two rusted out bearings is the internal spacer. Also made from stainless steel. Inspect it after removal. It must be precisely the correct length and the ends must be true, square and parallel. If it is too damaged to be trusted buy a replacement.
I can see the old impeller blade outer edges are quite worn. That impeller probably needs to be refurbished before you try using it again. I expect the new impeller has the same model number as the old one, correct?
11-27-2013, 06:36 PM #4
Ho - Lee - Chit that stator is ROUGH
11-27-2013, 06:41 PM #5
The impeller I removed from the ski had a part number ending in 372 but the new prop I bought from polarisjohn ends in 457. BryanP told me that both impellers work for the ski and the 457 will have better hook up. Is this correct?
From what I understand, your saying there's still pieces I need to remove from the old stub shaft and impeller before I put the new parts together?
Also, what are those large rubber pieces in the first picture of the thread? I really wish this came woth instruccions!
11-27-2013, 06:43 PM #6
11-27-2013, 07:04 PM #7
I had the same issue I had the bearings removed by a shop, they used a hammer and piece of wood and it came right out. It was in as bad shape, after reinstalling the the bearing and seals I ended up buying a new stator off eBay. It was just in too rough of shape. I think the stator was under $100.
11-27-2013, 07:13 PM #8
- Join Date
- Jul 2007
- near Toronto, Canada
11-27-2013, 08:58 PM #9
01-02-2014, 07:19 PM #10
The project slowly goes on
just ordered my prop tool yesterday and heated the stator to tap out the bearings. the first one came out easy and the second one was harder even after re-heating but it did eventually pop out.
So here are my current questions at the moment haha,
What I really want to know about now is these spacer you mentioned keith. I was looking at a diagram and I think there is a total of 3 spacers I need, everything seems beat up on the old shaft and prop so I figure I'm buying new ones, anyone know where to buy them?
On another note, it looks like this shaft has a spot for 3 O-rings and the stator has a spot for the large one, that leaves 2 small O-rings left, anyone know where these go?
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