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[Dave G]

BINGO...!!

I know you're all probably sick and tired of me and my pins, and rightly so, but look here...

I took the water pump off to replace it and noticed the front seal was all the way out of its housing and right up to the nose of the pump.
So I cut off the shaft and guess what I prised out? A load more pins, and plastic from the roller cage that matches the other pieces  :Din my collection!

I'm chuffed to bits.
So many thanks to everyone who helped me. Just a massive reassembly and test now. Then a brand new belt etc... (assuming no permanent damage has been done)

[STEMO]

That could have a lot worse, Dave. You might just get away with it 

[TheBoy]

/Smug mode: *Cough* Reply #88


Excellent find, and I bet you're chuffed to bits you've managed to find the fault, and strip it down that far.  Brilliant news.

Obviously, we know the belt jumped some teeth, so we're not completely out of the woods, but I'd get a new pump on, reassemble (cambelt locking kit needed if you don't want to revisit, or slap on as best you can to test, with a view to correctly time it shortly after) and see if you should be buying a lotto ticket or not!

[Dave G]

Yep. I leant on the pump end flange and I was sure it moved slightly.
Not exactly “cock in a sock” but a little movement.

So this pump had balls at the engine end and rollers at the flange end. Or it did have.

I am chuffed to bits, different bits this time…

[YZ250]

BINGO...!!

I know you're all probably sick and tired of me and my pins, and rightly so,
........

Not at all, it needed resolving and you've resolved it.    Fingers crossed for you getting away with it, and you must feel good for having done it yourself.    Thanks for the update.

[Migv6 le Frog Fan]

How old is the water pump ?
If newish I would be asking for a lot of money from the supplier.
Great that youve found the cause of the issue though. 

[Dave G]

Oh no. Looking at my records it’s 10 years - (a lot of covidness). But only 16k miles.

I feel like a right tw@ now..  all my own fault.

Just popping down the garden to find a stone to crawl under and there to die…!

I’ll continue to clean pices and prepare them for reinstatement.

[YZ250]

Oh no. Looking at my records it’s 10 years - (a lot of covidness). But only 16k miles.

I feel like a right tw@ now..  all my own fault.

I don’t see how you could have predicted that. It’s usually the impeller that fails, or grumbly bearings, not the pump spitting its bits out. 

[Enceladus]

Well done!

You've mentioned installing a new belt. What about the idler rollers and the tensioner? Are they being renewed or just the belt?

[Raeturbo]

Very rare occurrence, but, everyone here now is that much wiser, well done and keep us updated… as you undoubtedly will👍

[JamesV6CDX]

/Smug mode: *Cough* Reply #88


Excellent find, and I bet you're chuffed to bits you've managed to find the fault, and strip it down that far.  Brilliant news.

Obviously, we know the belt jumped some teeth, so we're not completely out of the woods, but I'd get a new pump on, reassemble (cambelt locking kit needed if you don't want to revisit, or slap on as best you can to test, with a view to correctly time it shortly after) and see if you should be buying a lotto ticket or not!

I also said it had to be something behind the  Cambelt cover to end up in the sprocket and the pump was the only logical option

Let’s hope it runs and that Dave gets a good outcome

[Dave G]

Morning.

I’m cleaning everything I took off before replacing. Then at least if it won’t run it’ll look nice.

Assuming a good start, my plan is to get the complete CT990K2 kit. New belt, backplate, tensioner, idlers and bolts.

Holiday next week, for which I’ve had to hire a car. 
I’ll update when there’s something interesting to report.

Thanks again everyone.

[Sir Tigger KC]

Well done Dave!    What an awesome thread!  The spirit of OOf lives on! 

Now we're all waiting with baited breath for you to get back from your holidays! 

[Dave G]

Thanks for your kind words Sir T!

Just a bit more before setting off. A little bling never hurt anyone...

[Varche]

Absolutely brilliant thread. Reminds me of the help I got from the forum about 15 years ago doing my cam belt change in the wilds of rural Spain.