Water Pump Leaking ?

[fishnbiker]

Greetings from western Canada.  I have a small leak in my water pump, most likely the O-ring/seal that separates the impeller shaft from outside. Not a serious issue, only enough to stain the pump & baby a drop on the garage floor after a long ride. In the parts list it's a one piece unit (but we all know better don't we?). Topping water only monthly if at all. Just wondering if anyone has ever tried to remove/replace the impeller successfully? I have a spare, also leaking a bit, to test if I can get inside it

Thanks,
Ken / Fishnbiker

[Timbox2]

Funny thing is the original workshop manual talks about inspecting shaft, bearings,  impeller etc and replacing if necessary, maybe they meant replace with complete pump?

Link here to a Triumph Rat thread about the same, he seemed to think you might destroy the pump trying to press the impeller shaft out?

https://www.triumphrat.net/daytona-deliberations/255186-leaking-water-pump.html

[threepot]

Probably pump housing seal? Buy on ebay.

[Lee337]

Interesting what the post in Triumphrat (post 6) says about using motorcycle specific coolant and not using automotive (I read this as car) coolant.

A little research suggests Propylene glycol is best to use for bikes rather than ethylene glycol. Been playing with both bikes & cars for many years & never heard of that.

[HockleyBoy]

Me neither, always stick the cheap blue stuff from Eurocarparts in mine and it seems to be fine.

[London_Phil]

Blue stuff, changed at least every two years..

[fishnbiker]

Thanks for the input. I may have an engine builder friend look into pulling the impeller on my leaking spare, to see if there are replaceable seals inside. TTFN.