Water Pump drive - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

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post #1 of 10 Old 06-15-2008, 04:12 PM Thread Starter
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Water Pump drive

Hello Folks

This is my first time posting on this site and I need some help. I have a 1987 KLR 650A which has a broken water pump drive ( it was me ) I need some info on how to replace it. Do I need to strip the engine or can the shaft be removed without removing the engine?? Is the small shaft screwed into the balance shaft??


Thanks

Sean
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post #2 of 10 Old 06-15-2008, 04:31 PM
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Welcome aboard Sean...

This link I will post at the bottom shows the steps required to get into the water pump to replace the seals, but should show you everything you need to know. While your in there and it is an 87' it would probably be advisable to replace those seals since you have it apart. Hope this helps:

http://www.klr650.marknet.us/Water_Pump_Seals.pdf

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post #3 of 10 Old 06-17-2008, 09:28 PM
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Yup, the motor has to come out and the cases split to replace the shaft. The book calls it the balancer shaft when you go looking for parts.

Punch it out to a 685 while it's apart and I'd replace all the bottom end bearings.

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post #4 of 10 Old 06-18-2008, 01:41 PM
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No, you do NOT need to remove the motor to replace the shaft. The manual says to do so, and the Kawi mechs will tell you that, too, but that is not the case.

I replaced my waterpump/balancer shaft after getting advice from experienced wrenchers, and it went well. You have to open both sides of the motor (easy), and the shaft comes out pretty easily.

I did replace the mechanical and oil seals while I was there, so it's best to have those parts on hand before you start. There is a small o-ring on the coolant impeller shaft that can get mangled up if you aren't careful (thread it on, don't push it on), so I had an extra one of those as well.

I wrote a Word .doc that described my experience with it. If you'd like a copy, let me know your email address and I'll send you it to you as an attachment. I haven't seen the Marknet instructions, but his stuff is usually good.
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post #5 of 10 Old 06-18-2008, 02:08 PM
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The Marknet is pretty much just replacing the seals, I didn't realize he meant the shaft going thru the motor. I was just thinking impellar. Is what I get for thinking .

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Previous ride was a 2007 KLR Black/Silver, I miss it..
Looking to get back into KLR's sometime soon.

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post #6 of 10 Old 06-18-2008, 04:33 PM Thread Starter
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Thanks everyone for the advice.
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post #7 of 10 Old 06-19-2008, 09:06 AM
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That's good to know, Marty!! When I tore my motor down I went in for another reason and didn't really look too hard at the pump shaft...figured the motor had to be split...learn something new everyday.

Advice from the road!!! Hmmm, I wonder if your report tells us why your bike is getting wrenched on yet?

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post #8 of 10 Old 03-24-2017, 05:34 AM
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Quote:
Originally Posted by SgtMarty View Post
No, you do NOT need to remove the motor to replace the shaft. The manual says to do so, and the Kawi mechs will tell you that, too, but that is not the case.

I replaced my waterpump/balancer shaft after getting advice from experienced wrenchers, and it went well. You have to open both sides of the motor (easy), and the shaft comes out pretty easily.

I did replace the mechanical and oil seals while I was there, so it's best to have those parts on hand before you start. There is a small o-ring on the coolant impeller shaft that can get mangled up if you aren't careful (thread it on, don't push it on), so I had an extra one of those as well.

I wrote a Word .doc that described my experience with it. If you'd like a copy, let me know your email address and I'll send you it to you as an attachment. I haven't seen the Marknet instructions, but his stuff is usually good.
Hi! I have to do the same thing you did (replace the water pump shaft). Could you send me that .doc you are mentioning? (email: [email protected]). Thank you so much! Best from Spain!
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post #9 of 10 Old 03-24-2017, 05:40 AM
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Hi! I have to do the same task! Could you, please, send me the .doc file you mentioned? Thank you so much! Best from Spain!
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post #10 of 10 Old 03-24-2017, 06:06 AM
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jmbuldu, you're responding to a post from the year, 2008. Sgt. Marty hasn't been around much, lately.

You might try sending him a Personal Message.

Best of luck.
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