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May 1st, 2010, 06:52 AM   #1
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09 570 water pump seal replacement

All,

Well after 100 hours the water pump seal started dribbling out the weep hole. I got the parts to replace it, clutch cover gasket, seals, pump housing gasket etc.

The new seals do not have the metallic outer that the previous generation had, and the oil seal has little spacers on it to leave a gap between the two so the weep hole will not get plugged off.

So Friday afternoon, great weather, thought I would go out and knock this out and maybe get in a few hours riding on Sunday. Everything was going good until I pulled the water pump impellor. The water pump impellor on the new motor is a closed design, really cool design actually, this design will resist cavitation and is much more efficient than an open design.

The impellor itself is a two piece design, with a washer like disc with grooves in it that locks into what looks like a standard impellor. My problems began with the standard impellor came right off, but the washer part stayed. Even though I was very gentle in trying to remove it, it broke into two pieces (@#$%!). So will have to get that piece, they are not expensive, just a pain that it broke. So a word to the wise, be very careful when removing this piece when you disassemble it. Probably just waiting until I had the cover off and pushing the shaft out would have worked better. Live and learn!

The upside to this that the new seals will push in with your fingers, not like the last design which took some care to keep it from folding as you installed it.

Looking at how the seals are installed and knowing how easy they are to install, I bet that if you had a little experience, and used a seal pick type tool very carefully, you could replace the seals without taking off the side cover.

The shaft seal appears to have a hardening coating of some kind, and while there are shinny spots on it from where the seals ride, there is no grooving like the last generation.

Even with taking the side cover off, I figured I could have done the whole job in an hour start to finish if I hadn't broken the little washer.
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August 17th, 2010, 03:16 AM   #2
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Re: 09 570 water pump seal replacement

how is it holding up now Dale? mine just started to leak out the weap hole
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August 30th, 2010, 04:06 AM   #3
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Re: 09 570 water pump seal replacement

installed my new seals and all working fine now, put the water seal with the spring facing the coolant rather than the weep hole like standard
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August 30th, 2010, 04:23 AM   #4
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Re: 09 570 water pump seal replacement

So far so good,

glad to hear that you put the wp seal in with the spring facing outwards like one normally would, looks like your the guinea pig LOL! I think it's weird that the manual says to put it in with the spring side in, and that's the way mine came from the factory. Pretty much common knowledge that the spring side goes towards the side you are trying to seal against.

Nice thing about the new seals is that they go in with your fingers instead of a driver like the last ones. I figure if one was careful, you could replace one or both seals without taking the side cover off. What do you think?

Dale
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August 30th, 2010, 01:08 PM   #5
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Re: 09 570 water pump seal replacement

Originally Posted by DaleEO
I figure if one was careful, you could replace one or both seals without taking the side cover off. What do you think?

Dale
yeah certainly think that would be possible, i was going to try but my impeller was pretty tight on the shaft and i didn't want to break it. Will do it that way next time for sure.
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