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Water Pump Leak

January 20, 2015, 06:15:45 pm

Hello!

After having quite a bit of servicing on our U320, SSS, the tech noticed the water pump leaking a few drops while the engine was cold.

The tech added a small amount of coolant.

It was not leaking once the engine was warm.

What do you recommend?

best, paul

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Re: Water Pump Leak

Reply #1 – January 20, 2015, 06:21:17 pm

Paul, 

Replace it at your first convenient opportunity.  Pump seals can leak  slowly for a long time, or completely blow out with serious coolant loss.  Not worth gambling on.

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Re: Water Pump Leak

Reply #2 – January 20, 2015, 06:24:11 pm

Replace seal? Or pump?

best, paul

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Re: Water Pump Leak

Reply #3 – January 20, 2015, 06:31:43 pm

Paul,

Sorry, I have not worked on the M engine water pump-- but a good question for a Cummins guy/dealer.  And, it may be that you will need to disassemble it to determine whether it is just a seal or whether wear suggests a new pump or pump parts.

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Re: Water Pump Leak

Reply #4 – January 20, 2015, 06:35:30 pm

Thanks, Brett.

best, paul

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