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1995 GTX Jet Pump Maintenance

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mkjj123

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Hi All,

Changing the jet pump oil and have some questions.

1) When i removed the cone, instead of the expected oil coming out, a bit of water came out. There was no oil in it, just water. It wasn't full of water, but water nonetheless.

2) I blew it out to get all the water out of it, replaced the cone and oil (new seal), and when it was back together, the prop wouldn't spin. I couldn't spin it at all even using the driveshaft (the engine isn't in it so I put the driveshaft in and tried turning it by hand). I removed the cone thinking that the shaft wasn't positioned in the cone correctly, but it just presses up against the inside of the cone. I replaced the cone and before even completely tightening the 3 bolts it was already too tight to spin. Before taking the cone off the shaft spun freely. The shaft from the jetpump inside the cone has maybe 1/16 to 1/18 inch of forward/backward movement.

Thoughts on either of these would be appreciated.


Thanks,
Michael
 
Thanks for the reply, LouDoo.

Since I haven't removed the pump or the impeller shaft, could the thrust bearing or thrust washer have moved to get pinched? How would I go about checking these and/or correcting them?


Thanks
 
i agree with Lou. being that water was in there, I would pull the pump, pull the impeller and shaft to inspect the bearings and replace as needed. if the bearings ck out good, then replace the front seal and cone seal and pressure ck. may as well get her done right and be done with it so that you can enjoy the summer.
 
Yeah, I'm thinking I may just go down now and pull the entire pump off. I've been hesitant to take it apart as i've never done it before, but there seems to be plenty of folks on this forum that have done it and provided info on it. I've read that it's a pain to get off because of the gobs of glue they used to seal it to the hull. Is there a replacement gasket for this now or do I need to get a tube of the OEM glue?

Thanks for your input as well.
 
It's hard to say who's worked on your ski in the past, but it's supposed to use a neoprene seal, part no. 34, silicone seal only where the tubes go through the hull. So if your ski was maintained properly there shouldn't be a problem removing the pump. If you haven't already done so, download the service manual.

You'll also need an impeller removal tool. Something like this, you can find it on Ebay for a little less.

http://www.shopsbt.com/jetski_repair_tools/80-101-10.html

And while you're at it you may want to change the wear ring.

Lou
 
Ordered rebuild kit and wear ring from SBT (forgot about the oil...DUH!!). Didn't order the shaft. Will see how it looks once I get it out. Having trouble finding 8mm threaded rod locally (found some online) to make a puller, so still haven't gotten it off the ski.

Thanks for all the help and guidance.
 
Hey guys, I'm having this exact problem, just rebuilt my pump and it won't kick over nor turn now ?


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southy.grunta said:
Hey guys, I'm having this exact problem, just rebuilt my pump and it won't kick over nor turn now ?


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Click to expand...

Southy,,, just follow the same advice given above... Not trying to sound harsh, but it really is that simple. Not too many things it can be. But,,, if there is water in it, then you need to figure out why or replace the wear parts.
 
There's no water at all mate, it's just oil, I have only just put the new oil in. But I will sus it put


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southy.grunta said:
There's no water at all mate, it's just oil, I have only just put the new oil in. But I will sus it put


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Click to expand...

See post #2 of this thread, check and make sure you haven't pinched either the thrust washer or the thrust bearing.

Also you need to start your own thread, it's just too confusing trying to solve two problems in one thread.

Lou
 
It needs to be checked by hand before it goes into the machine, that will tell you if you pinched the thrust bearing.

Also it can be the wear ring. When its cinched down the ring distorts a little and the prop rubs on it. In that instance I trim the lip off the wear ring and reinstall. If it still pinches, I will spray a little wd40 in there, start it up, then tighten the pump to wear the prop into the wear ring.

Couple years ago all the OEMs were doing that, last year I dont think I had to do it once. Great quality control....lol well still better than WSM.
 
I just got the rebuild kit and new wear ring from SBT, but haven't taken the pump apart yet. Questions on pinching of the thrust bearing. If all is in good condition, how could the bearing get pinched? and how are you supposed to 'unpinch' it if its inside the pump? Again, I'll be taking mine apart, but I'm curious about this pinching so when I change the oil next year I'll know what could happen and how to rectify it without taking the pump apart.


Thanks,
Michael
 
Make sure you have end float, so you should be able to move impeller shaft back and forward. I dunno about the 1995 model but the 2000 model they made two sizes in the washer. But if you make sure the shafts the hole way in when you put it in you should have no problems
 
I got the pump apart fairly easily. Didn't need to heat the shaft to break the locktite, so not sure if there was any there to begin with.

A few questions for the experts.

The shaft goes in very tight and is difficult to turn by hand. I can turn it with both hands on either end of it but it's certainly not as easy as it was before rebuilding. Is this normal?

I replaced the wear ring. I can't get the impeller into it without hitting with a hammer. Is this normal? Should I tap it in with a mallet and screw it onto the shaft and allow it to shave the wear ring to where it turns without being tight?

Should I use Locktite 271 as the manual indicates on the shaft?

Thanks in advance.


Regards,
Michael
 
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