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Rebuilt jet pump install issues

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Toolanddiemaker

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Was wondering your guys opinion on an issue I'm having installing my rebuilt pump on a 96 xp.
To start my thrust bearing is not pinched but when I get the pump torqued down it is binding and tight and won't turn over weird thing is the new wear ring and impeller are not that tight you can spin by hand I trouble shot and made sure I didn't have 2 rubber grommets stuck in the pto and impeller I also have been dry fitting the pump with no boots on the shaft so I have play and as soon as it's torqued you can't turn the pto but with loosing a tad it's freed again this is making me belive that the plastic pump is warping or getting tweaked and clamping down on they impeller when tightened . I did notice that when I installed the new wear ring it was egged a bit. Sorry for the long post thanks in advance any ideas?
 
This may or may not help as a possibility. An idea if nothing else.

I had an interesting problem today with my pumps while changing impellers around between my Seadoos. On one of them the impeller would fit nice and snugly into the wear ring. I could turn fairly easily with just a very small bit of rubbing. (purrrfect) However, when I screwed it onto the shaft it spun nicely until shaft tightened up. Then the impeller got really hard to turn in the pump. After scratching my head awhile, (it took me two beers to figure it out!) I discovered that the hub skirt on the base of the impeller was too long and that was actually bottoming and rubbing on the housing that the shaft sticks out of. I took out the grinder and knocked about 3mm off of the outer rim of the bottom of the impeller hub skirt. It then screwed on and tightened to the shaft no problems at all. Spun freely by hand, and installed onto the Doo with no further problems.

btw: I was working with/on my '94 SP 580 and '97 SPx 800 today. I believe are the same basic 140mm pump that is on your 96xp.

The problem impeller was a Skat-Trak being put into the older SP.
 
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This may or may not help as a possibility. An idea if nothing else.

I had an interesting problem today with my pumps while changing impellers around between my Seadoos. On one of them the impeller would fit nice and snugly into the wear ring. I could turn fairly easily with just a very small bit of rubbing. (purrrfect) However, when I screwed it onto the shaft it spun nicely until shaft tightened up. Then the impeller got really hard to turn in the pump. After scratching my head awhile, (it took me two beers to figure it out!) I discovered that the hub skirt on the base of the impeller was too long and that was actually bottoming and rubbing on the housing that the shaft sticks out of. I took out the grinder and knocked about 3mm off of the outer rim of the bottom of the impeller hub skirt. It then screwed on and tightened to the shaft no problems at all. Spun freely by hand, and installed onto the Doo with no further problems.

btw: I was working with/on my '94 SP 580 and '97 SPx 800 today. I believe are the same basic 140mm pump that is on your 96xp.

The problem impeller was a Skat-Trak being put into the older SP.
Thanks for the repley but i forgot about this post and I should have updated. I ended up leaving the pump a bit loose and let it run while I slowly tightened up all the bolts in a criss cross pattern and that wore the impeller in to the new wear ring.
 
Thanks for the repley but i forgot about this post and I should have updated. I ended up leaving the pump a bit loose and let it run while I slowly tightened up all the bolts in a criss cross pattern and that wore the impeller in to the new wear ring.

Not a good idea leaving the impeller loose. Yes it should tighten itself under operation. However, it can also work itself off the other way. What you end up with is a damaged shaft threads and impeller threads, a worn end cone giving excessive axial play, and/or the drive shaft pushes into the motor and takes out the engine PTO bearing.

Point is, never install a stiff or binding pump. Tighten properly and turn over by hand. If it doesn't turn over by hand go back and review rethink and redo.
 
Not a good idea leaving the impeller loose. Yes it should tighten itself under operation. However, it can also work itself off the other way. What you end up with is a damaged shaft threads and impeller threads, a worn end cone giving excessive axial play, and/or the drive shaft pushes into the motor and takes out the engine PTO bearing.

Point is, never install a stiff or binding pump. Tighten properly and turn over by hand. If it doesn't turn over by hand go back and review rethink and redo.
No I meant the whole jet pump was a tad loose to the hull the impeller was tight I just torqued the jet pump while it was running that was advise from a thread I read on on a different Forum
 
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