sxr 700 water pump seal leak

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ymhajoe

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Dec 6, 2008
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63
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minnesota
I have a 2000 sxr 700 that has a water pump seal leaking out the weep hole behind the water pump. Need to change the seal. Have pump cover off and the impeller and it look like the pump shaft is corroded and may be leaking past there. Looking for any tips or experiences that would be helpful in taking the old seal out and installing a new one. How about the oil seal behind it should it be changed as long as you have the water pump seal out? Let me know what you can.
Thanks ymhajoe
 
Hello Joe,
The seal directly behind the impeller may not be the source ofthe leak. I am rebuilding an engine from a 2000 SRX and found the water pump impeller shaft on my engine to be corroded also. Members of this site have told me that the source of the leak could be the seal waher under the impeller bolt, these seal washers are a rubber coated metal washer that are prone to failure, especially if the impeller is not a snug fit to the shaft. I believe these seal washers need to be replaced everytime you remove the impeller bolt. I was also advised to apply green loctite to the impaller shaft before installing the impeller to prevent the impeller from wobbling on the shaft and wearing the seal washer. You may want to try replacing the seal washer first before changing the impeeler shaft seal. If you do need to replace the impeller shaft seal, the trickiest part is the removal of the old seal from the lower crankcase half. I removed this seal by carefully using a scrwedriver to push the edges ofthe metal seal away from the case towards the impeller seal. I worked my way around the seal until it was loose and removed it with a needle nose pliers. I would then clean up the rust and corrosion from the shaft and reassemble. You will need to use a a deep socket, perhaps for a 1" bolt to push the new metal seal in place.
 
I left out an answer regarding the oil seal. Usually, when I perform a repair like this, i change out all the seals, gaskets and serviceable parts. Personally, i would change the oil seal also since they are inexpensive. I am rebuilding a 2000 SRX engine of unknown miles so I am replacing all ofthe seals and gaskets. I hate doing repair work on an item twice. Good luck and keep the questions coming.

Happy Holidays!!
 
rx1jim said:
Hello Joe,
The seal directly behind the impeller may not be the source ofthe leak. I am rebuilding an engine from a 2000 SRX and found the water pump impeller shaft on my engine to be corroded also. Members of this site have told me that the source of the leak could be the seal waher under the impeller bolt, these seal washers are a rubber coated metal washer that are prone to failure, especially if the impeller is not a snug fit to the shaft. I believe these seal washers need to be replaced everytime you remove the impeller bolt. I was also advised to apply green loctite to the impaller shaft before installing the impeller to prevent the impeller from wobbling on the shaft and wearing the seal washer. You may want to try replacing the seal washer first before changing the impeeler shaft seal. If you do need to replace the impeller shaft seal, the trickiest part is the removal of the old seal from the lower crankcase half. I removed this seal by carefully using a scrwedriver to push the edges ofthe metal seal away from the case towards the impeller seal. I worked my way around the seal until it was loose and removed it with a needle nose pliers. I would then clean up the rust and corrosion from the shaft and reassemble. You will need to use a a deep socket, perhaps for a 1" bolt to push the new metal seal in place.
Click to expand...

this is good advise, as often the mechanical seal is suspected as the culprit, but is not.... tj
 
The credit for this infomation goes to Mopar1rules. He has been providing me with his expert advice on rebuilding my SRX engine.
 
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