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post #1 of 4 (permalink) Old 01-10-2009, 06:12 PM Thread Starter
 
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2006 660 Rhino Water Pump

I have a coolant leak coming form the tube running out of the bottom of the Rhino water pump. I have removed all the bolts and the front of the water pump come off easy but the impeller and the rest of the water pump is still attached to the engine. What's the procedure to remove the rest of it? What do i need to watch for and will I be able to replace the mechanical seal without the special tool from Yamaha?

Thanks and any help would be appreciated.

JG
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post #2 of 4 (permalink) Old 01-11-2009, 10:45 PM
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Quote:
Originally Posted by jgraham37128 View Post
I have a coolant leak coming form the tube running out of the bottom of the Rhino water pump. I have removed all the bolts and the front of the water pump come off easy but the impeller and the rest of the water pump is still attached to the engine. What's the procedure to remove the rest of it? What do i need to watch for and will I be able to replace the mechanical seal without the special tool from Yamaha?

Thanks and any help would be appreciated.

JG
There are 5 bolts with an 8mm head on a Rhino water pump.
One has a copper washer, this is the coolant drain.
The two on the top and bottom hold the two halves of the water pump together. These two bolts have a serrated look to the threads.
The bolts on each side go through both halves of the pump and attach it to the side cover of the engine.
If you have the cover off, you already have all 4 bolts out. The inner half of the pump slips into the engine side cover. The only thing holding it in is an o-ring. If you gently pry between the inner pump half and the case, it will come right out.
NOTE - the pump is installed below oil level. If you haven't drained the engine oil, do it before pulling the pump out.

The mechanical seal is usually destroyed, especially without the Yamaha tool. It can be installed without it, but it is on the fragile side.

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post #3 of 4 (permalink) Old 01-12-2009, 06:49 AM Thread Starter
 
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Thanks for your help. I'm thinking of replacing the whole water pump instead of the mechanical seal this way all is new.


What's your thoughts?
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post #4 of 4 (permalink) Old 01-12-2009, 11:46 PM
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Originally Posted by jgraham37128 View Post
Thanks for your help. I'm thinking of replacing the whole water pump instead of the mechanical seal this way all is new.


What's your thoughts?
Not a bad idea, and the cost isn't too bad either.

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