Mechanical Seal Waterpump Install - 2013 Honda CRF250

Was getting water in my transmission fluid.  Bought new oil seal, bearing, shaft, impeller and water side mechanical seal.  Put everything back together following Service Manual Instructions.  Used sockets to press everything together as I don't have the installer collars.  Put water in the system to test and the water just runs out the weep hole without the engine even running.  Bought another mechanical seal at $30.00 installed it and the same thing happened. Has anybody successfully installed the mechanical seal themselves without taking to a shop.  I am guessing the installer collars are a requirement.  Can't seem to find them anywhere to purchase.  With these seals being prone to failure, I really don't want to have to take bike to shop each time they go bad.  Any suggestions would be appreciated.

You must be doing something wrong.

Follow this guide:

http://crfsonly.com/howto/450r/water-pump/honda-crf450r-water-pump-rebuild.php

i used this and over 70 hrs with no issues. i used all oem parts and didnt need any special tools

That's the older style standard lip seal replacement instructions, not the newer "mechanical seal" instructions. You must have an older carb'd bike as they changed the CRF250 & 450 to a mechanical seal when they changed over to EFI on the bikes, so 2009 for the 450, 2010 for the 250. Edited by Eddie8v

You must be doing something wrong.

 

Follow this guide:

 

http://crfsonly.com/howto/450r/water-pump/honda-crf450r-water-pump-rebuild.php

 

i used this and over 70 hrs with no issues. i used all oem parts and didnt need any special tools

 

I used the crfsonly guide up until the mechanical seal part.  Mechanical Seal is a new component in the 2010+ bikes.  A fellow thumpertalker  Notorious Eric has hooked me up with the special tools required at a great price.  He works at Honda dealership in HBeach, California.  Discovered they have great prices on OEM parts as well.  Tools cost me 60+ bucks.  Have been a huge Honda fan for 30+ years but really disappointed in Honda with this mechanical seal failure after only 50+ hours of use and the requirement for the special tools to install.   

So you got it installed and it's not leaking? That's good!

Not installed yet.  Waiting on the tools to arrive.  Just got 6 inches of snow today in the Carolinas so while I am waiting on the weather and the water seal tools to arrive will be tearing down the front forks and installing new seals, bushings and oil.

Sounds like good snowy-day activity.

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