CRAP, my waterpump is dripping oil. I got my 630 in June of 2010. Purchased from Rocher in Ontario and shipped to Edmonton. I am now living in Penticton B.C. , Scott shipped me the seal and two "o" rings in a bag and I had considered doing the work myself as I thought it would not be too difficult to do, but after following this thread I am considering having it done at a dealer as I am wondering about the shaft being grooved and needing to be replaced as well. Recently spoke to Scott and apparently my replacement clutch shaft is in the mail as well. I am not sure where to go with this, any suggestions ?
When you say dripping oil, is it a light film around the water pump housing? If it is it may just need a simple blue loctite fix. Pull the 3 bolts one at a time, give the threads some blue loctite and put them back on at 70 inch pounds. This has worked for me.
Thanks XL it is indeed just a film from day to day, but if sitting for a couple of weeks it does drip onto the floor. I will try your method first.
Someone please correct me here if I'm wrong but I think the bolts in question extend into the engine case and oil seeps back out via the bolt threads ...
Truth. Mine oozes just a hair, but not enough that I worry about it. I'm pretty sure it's seepage around the bolt threads. If anything, I'd try to loctite approach.
The exact same thing happened to mine. I started by just ordering seals but now have a new impeller shaft and bearings on the way. Looks like the problem goes hand in hand with the "gunk in coolant" issue which ultimately gunks up the water pump.
Lots of white sediment junk in my coolant when I did my valve check etc. , still trying to decide on replacement coolant.
For what it's worth, and I've mentioned it before, because I could not determine what kind of coolant was put in at the factory, I drained, flushed and refilled with Yamaha engine coolant. No problems to date.
I run Peak 50/50 pre mixed coolant in all the bikes. Never a problem with Peak. Back in the day one of the Pro Circuit race teams sponser's was Peak coolant. It was good enough for the fast guys, it is good enough for me.
Yeah, I'd like to try the XL coolant the Zip-Ty boys are using but sometimes being a Canadian customer makes things difficult!
Oh yeah, that white gunk. I found it around the radiator filler cap on my 630 when it was brand new! Well, just a few miles on it. That's why I did the flush and coolant change. Never had that problem since, and I hope that it all got flushed away. I wonder what in heck they put in there at the factory?
A lot of car manufacturers put a rad sealant in the coolant to reduce embarrasing coolant leaks on new engines. I am a fan of the blue honda Type II car coolant and use it in all my bikes. Changing the husky this weekend. Cam.
Gunk in coolant and oil weeping from waterpump problem has been solved. As XLEnduroMan suggested thread sealer on the waterpump bolts is the cure !
I put some blue loctite on my water pump bolts when I swapped out the cam chain. Haven't seen any seepage since.
