2018 WR450F Waterpump Rebuild yz450f water pump yz450fx

[@ModernWell-r9t]

thanks for the video this will make this job easier ,starting now

[@mostlypostie1]

Thanks for the video mate. Helped a lot with my 21 WR450F

[@DiamondStateOffroad]

Glad it helped.

[@Creeper-m9]

One thing not mentioned is the o ring in the oil gallery from the oil filter. Make sure that didn’t fall out. I bought a new water pump o ring as well. Mine was a bit hardened

[@chrisbouchard5127]

Great info. Thanks for posting! cb

[@ryanhogan4791]

Good video would have appreciated closer up of the stuff going in in what way but thanks homie big help

[@DiamondStateOffroad]

I’ll keep it in mind for the next one! Thank you for your input.

[@mikeradcliffe122]

Great video Tylor ! I see that you almost stabbed your finger with the screwdriver lol. I hate when it slips and it finds its way between the finger and the fingernail !! 😵‍💫😵‍💫

[@DiamondStateOffroad]

I see the A on your keyboard stopped working again 🤪🤪🤪 I have a love/hate relationship with that screwdriver, use it everyday.

[@mikeradcliffe122]

@@DiamondStateOffroad 🤣🤣🤣🤣AAAAAAA As the fonz would say lol I guess i have to hit it harder 🤣🤣

[@wingding028]

my 2018 wr450 has started weping from that hole my bike only has 63 miles on it ive only had it out twice i take it must be the seal gone

[@DiamondStateOffroad]

More than likely. Mine had around 35 hours when I bought it. Ended up replacing the impeller too while I was in there.

[@trevorsmiley1032]

How would you know if it needed a water pump rebuild vs a bad cylinder gasket? I’ve got milky oil and coolant weeping

[@DiamondStateOffroad]

I’d start with a compression/leak down test. Could be pressurizing the coolant system with exhaust gases.

[@Creeper-m9]

If coolant leaking from weep hole prob the water pump seal and the inner seal. Easy enough to change the water pump seals and ride it and see if still getting milky oil

[@christianherrera1706]

Why would the water pump typically give out? Would it be improper maintenance that does that or just a lot of hours on the motor ?

[@DiamondStateOffroad]

It could be a few things. This bike only had 32 hours on it, which is unusual for it to be leaking so soon. The bearing had some notchiness to it and the impeller shaft had some wear on it. Typically it’s the bearing that goes bad and then the seals.

[@Holgrinator]

Oddly enough not being ridden is a major factor to the seals starting to leak. I just bought a 2016 yz450fx and mine is leaking out the weep hole. It has 109 hours. So 15 a year… from everything I’ve read it’s people who’s bikes sit that seem to need it most. (There’s other reasons but it’s a factor to consider.

[@Creeper-m9]

I hit a log and ripped my radiator hoses and it ran for a few seconds without coolant and that was long enough for the seal to go bad