was your impeller bad, i have been told that the shaft will be bad also, what did you replace?

 

I replaced everything...my impeller ahaft was scored which caused the outer seal to go bad.

 

I just got the seals....Should i get the bearing and impellar shaft too...or u think ill be alright just replacing the seals?...

 

Originally posted by YFZdream450@Aug 5 2006, 05:13 PM
I just got the seals....Should i get the bearing and impellar shaft too...or u think ill be alright just replacing the seals?...

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The bearing is probably OK but inspect the impeller shaft for scoring...if you can feel grooves in it it may be a good idea to replace it.

 

Originally posted by YFZ450alterego@Aug 5 2006, 02:34 PM
The bearing is probably OK but inspect the impeller shaft for scoring...if you can feel grooves in it it may be a good idea to replace it.

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Cool, i happened to be at the dealer and thought id pick up the stuff to fix the leak and thought id only need the seals. I had to order them and barely got them yesterday. I didnt want to go back and order more stuff and wait. I wanted to do it today. oh well, ill check for grooves, hopefully not though. Thanks

 

do they make a hi flo impellar like the ones for the banshee?

 

Do you think the warrenty will cover this?
How much did you guys spend on this?

 

YFZATEREGO, thanks for the post, great info. I just completed the rebuild last night. I just need to put oil and coolant along with the header back on and I'm ready to ride. I went ahead and replaced everything in there, the seals, bearing, shaft, impeller and of course the case gasket. It totaled $132 parts and $64 for header gasket, oil, coolant and oil filter and and took about 2 hours. :icon_biggrin:

 

Originally posted by rageracer@Sep 3 2006, 02:47 AM
Do you think the warrenty will cover this?
How much did you guys spend on this?

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If it's within 6 months (I think that's what the factory warranty is) Yamaha should cover it.


PHXDUCWI....glad this write-up helped you out...that's why I do them. :smile:

 

Could someone please tell me what the torque specs are for the impeller and the sidecase bolts, I havne't got a manual yet. Thanks

 

Could someone please tell me what the torque specs are for the impeller and the sidecase bolts, I havne't got a manual yet. Thanks
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the one torgue that you are really going to have to know is for the TOP oil line don't over tighten or you will be in trouble. i'm dealing with that now...

 

I replaced the seals and bearing and am still getting a constant drip?? :wtf:

 

I replaced the seals and bearing and am still getting a constant drip?? :wtf:
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Did you replace the impeller shaft? If not, did you make sure it's not scored?

If you replaced everything and it's still leaking did you make sure the springs on the seals were facing away from each other and they are towards the fluid? Did you use some lithium grease on the seals before you installed them?

 

Thanks for the reply.
Yes, I replaced the shaft. I used some lithium grease on the inside of the seals where the shaft would be.
The seals...? I am sure I put them in the right way. I think? I put them in the way they came out. I think? Now I am thinking I put them in backwards. That would also allow coolant to get in the oil if I put them in backwards, right?
Crap! I am hoping to make to a race next weekend in Miami. If I did put them in backwards, are they salvagable? After install I ran it at an idle for quite some time to heat to temp.A couple passes around the property and back to the barn. I saw the coolant right away.

Thank's again for the help.

edit: tore it apart this morning and found I had the outer seal in backwards. Popped it out and flipped it over. Problem solved.
Awesome site!

 

Hey alter, did you buy the stuff from Bob at magnolia tractor? Just wondering how much the kit alone was.
Thanks

 

Hey alter, did you buy the stuff from Bob at magnolia tractor? Just wondering how much the kit alone was.
Thanks
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I actually got it from www.dgy.com

It wasn't a kit...I just pieced it together from the parts diagram. $50 or so including shipping. :smile:

 

Awesome information. I tried this rebuild over this last weekend only to go from a slow drip from the weep hole to almost a spray when I revved it up. From the sounds of it I have installed the seals backwards (all 3 times I have reinstalled trying to fix it again). So tomorrow I will turn them both around and hope that my problem is solved. To bad that last 3 days I have been looking for this info online GOOGLE has not sent me to YFZCentral.

Also, I believe 93102-12106 has been superceeded by 93102-12321, just FYI.

 

the one torgue that you are really going to have to know is for the TOP oil line don't over tighten or you will be in trouble. i'm dealing with that now...[/b]

14 ft. lbs for this oil line into the side case and
13 ft. lbs. for the other 2 bolts on this same hard oil line.
10 ft. lbs. for the impeller on the shaft.
5.8 ft. lbs. for the oil line bolt into the lower side case.
7.2 ft. lbs. for all other side case bolts and oil filter and water pump covers related to this repair.

 

Ok I know there are many of you who have had the water pump seal problem so hasn't anyone really thought why this happens? How does the shaft become damaged? My theory is that dirt/debris enters through the weep hole and causes the premature ware. I have now done the seal replacement 2 times in less than 12 months. I haven't ridden very much over the time period so I can't say that it is a use issue. I was thinking about tapping the weep hole and plugging it with a threaded plug. Has anyone done this?

 

Hey any update on plugging this hole............?

 

So r those parts update from Yamaha or an aftermarket parts?

 

OEM parts.

 

So it is like an update from Yamaha?

 

Not sure what you're asking. I know Yamaha updated the parts a while ago (not sure what they updated, maybe the seals) but if you go to www.dgy.com and look at the break-down for the waterpump you can get all the parts there. That's what I did...I just provided stock numbers for the tutorial when I ordered my stuff.

 

this may sound stupid, but why exactly do you have to take the entire crankcase cover off? why cant you get to everything just from the water pump cover?

 

this may sound stupid, but why exactly do you have to take the entire crankcase cover off? why cant you get to everything just from the water pump cover?[/b]

To get to the inner oil seal and to get the impeller shaft out.