Replacing The Waterpump Seals.

[kazpa]

thanks for quick response daddio. the only thing is mine was not leaking till i took apart and put back together. Did i pinch the o-ring or mess up the pin dowel or something? or maybe b/c it is warped i haven't put it back together exactly where it was when the warping occurred and there is a little leak there? Do you happen to now the torque specs from the bolt i speak of?

[blazed20s]

i have to replace my water pump and found this link with pictures if anyone needs it
NebraskaATV.net • View topic - YFZ 450 Replacing Waterpump Seals : Tutorial

[N1CK N1TRO]

i love how all the pics are gone on this
ahhhh this doesnt help!

[atxaldea]

That's what I was thinking, but don't know if it is safe ?

[atxaldea]

I replaced outside seal.started and seen drips again , right off the bat .started today and no drips? Any reasons,I had also replaced impeller.

[yfz102]

thanks alot for the info just changed out my impellar and seals and everything came out 100% perfect.......so far.lol

[yfzripper24]

i have a yfz 450 and i bought the quad in july. the water pump would leak a little antifreeze outof the wheep hole and over time it started to get worse and worse till one day i couldnt drive 2 miles w/out it emptying all the antifreeze. so i bought a water pump gasket, seal, and o-ring kit by K&S racing. i took it all apart, put everything back together and i noticed the seals around the impellor shaft were facing out(springs were facing away from echother) and i have never seen a seal go in that way, so i put them in w/ the flat sides facing away from echother. with in 2 days it started pouring out of the wheep hole again. so i got some info off of this site, and i read that the springs on the seals have to face away from eacother. so im taking it apart right now, and i overnighted all the neccesary orings, seals, and gaskets from motosport. w/ some extras that are needed. thanks motosport! so yes when u do this by yourself make sure u get a new o-rings,gaskets and seals that your service manual states to get. and make sure the 2 seals on the shaft go the spring side out or the springs face away from echother. it will save alot of time and work.

[RuffRyderNJ]

ok just got the side case off and now i cant for the life of me get the impeller off of the shaft!!!!!im using a 12mm socket on the impeller and just cant get it to budge off the shaft. Any suggestions?????

[RuffRyderNJ]

solution- get a bigger ratchet

[bajaclawz71]

So I know this is an older thread but I am in the middle of changing out seals and when I took them out the springs were facing each other. I noticed in the original post he said they should face out. Looking at the direction the shaft spins and the design of the seals I would think they should face towards each other like how they were when I took them out but does anyone have a definitive answer?

Blake

[RuffRyderNJ]

springs face away from each other and sit in the fluid

[bajaclawz71]

Originally Posted by RuffRyderNJ

springs face away from each other and sit in the fluid

So far so good. Apparently I found out why mine was leaking. The last person to put the water pump in put the seals in backwards.

[Monster550]

Two quick questions for this old sticky...
1-Do you use any gasket sealant or anything on the new gasket?
2-Is it easier to remove the impeller with the side case on or off and if off, do you hold the back of the shaft with a wrench or vise etc. to do it?

[pikereen]

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[Loud Pedal]

Originally Posted by blazed20s

i have to replace my water pump and found this link with pictures if anyone needs it
NebraskaATV.net • View topic - YFZ 450 Replacing Waterpump Seals : Tutorial

that site is exatly what you need to look at to get this done. theres a lot of good questions adn info on this thread and i would suggest to everyone to read this ENTIRE thread before posting

[Countryboy]

Could someone explain exactly how the seals lay in the case? I tore mine apart two days ago and broke the nozzle that sprays oil to the gears i think its what it does anyways. My brain needs refreshing, esp since you guys have had leaking problems after putting back together. Also Im going to replace all my coolant, and i bought water wetter. Whats the best way to run that stuff? Thanks for all the help..

[jonnymonofrax]

I think its a poor design with 1 bearing and the long shaft lots of play even when new I dad no water comeing out weep hole just a few drops of oil in water but the people I bought it from beat it to death

[cloudpump]

Originally Posted by Countryboy

Could someone explain exactly how the seals lay in the case? I tore mine apart two days ago and broke the nozzle that sprays oil to the gears i think its what it does anyways. My brain needs refreshing, esp since you guys have had leaking problems after putting back together. Also Im going to replace all my coolant, and i bought water wetter. Whats the best way to run that stuff? Thanks for all the help..

Flat side goes to the middle, springs are on the outside.