Coolant Leak AGAIN!!!! (WTF)

Coles_55

Coles_55

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Ok so Dooman's SXR 600 once had a small coolant leak down by the water pump. And we replaced the seal behind the impeller, the main gasket around the water pump and still the same damn leak. We got the updated seal thats behind the impeller from the dealer because he said it was a better design. What else can we do? I am about to put a damn bead of silicone around the entire thing and see if that works.

Any ideas????
 
Just went through same thing with a 700, I ended up replacing the bearing in the case behind seal, been good for couple weeks so far. this was 3rd time around for the leak, coolant coming from the weep hole on bottom side of case.
 
How did the shaft and impeller look?On mine there was play in the shaft and impeller causing problems also, so on mine we did these plus the mechanical seal and other stuff and its been good ever since.
 
Well the Yamaha Part is a 93306-00106-00, doesnt that mean that its a 6001 either 2rs or zz bearing??
 
Thats what we did the first time, I guess we will do it again and hope for the best. We leave early Thursday morning for Houghton
 
Take your time,pay attention to detail,there PITA seals for sure but should be able do this repair successfully,theres not that much to it really.
 
"""""""Quote:
Originally Posted by abumpa
Was a bit surprised to see the mechanical seal is secured into the backside of the impeller. Not sure though where I expected it to be.
Quote:
Originally posted by TJ500
that's only half the mechanical seal... the other half is jammed and sealed into the block... the two ceramic mating surfaces (machined) ride on each other and seal the coolant from entering and getting at the shaft...

was your impellor loose on the shaft splines? tj""""""""



This was off of one of those other posts. We only replaced the impellor half of that ceramic surface (seal)
 
dooman333 said:
"""""""Quote:
Originally Posted by abumpa
Was a bit surprised to see the mechanical seal is secured into the backside of the impeller. Not sure though where I expected it to be.
Quote:
Originally posted by TJ500
that's only half the mechanical seal... the other half is jammed and sealed into the block... the two ceramic mating surfaces (machined) ride on each other and seal the coolant from entering and getting at the shaft...

was your impellor loose on the shaft splines? tj""""""""



This was off of one of those other posts. We only replaced the impellor half of that ceramic surface (seal)
Click to expand...
thats most likely your problem,ya have to replace both parts.also dont touch the ceramic seal surfaces with your fingers,the oil from your skin can screw them up just like halogen light bulbs. if you do touch the sealing surface clean them with alcohol and a lint free cloth then before installing the impeller put a small drop of antifreeze on the ceramic part as a start up lube.
 
i had same problem on one of my sleds and it was the seal washer(rubber coated washer) the rubber was not tight on washer anymore
 
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