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Help! Diesel overflow!

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David in NH

09-13-2007 10:10:50




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I have a IH 504 Diesel. It starts fine, but then pours what appears to be a diesel oil mix out the overflow tube. I pulled the dipstick out and it gushed out of there also. It sat for about 2 weeks since I last ran it and all appeared fine then. Any suggestions to whats wrong and how to fix!

Thanks




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LenND

09-13-2007 15:23:34




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 Re: Help! Diesel overflow! in reply to David in NH, 09-13-2007 10:10:50  
I have that problem with my 900 as long as I am running it it doean't leak too bad. But when it sits it will fill the crank case out of the fuel tank. My problem was the final filter on the return line plugged and I guess blew a seal in the pump. I haven't fixed it yet I just shut the valve off on the fuel tank when not using it and have very little in crank case but I don't use tractor much anymore.

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David in NH

09-13-2007 10:33:37




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 Re: Help! Diesel overflow! in reply to David in NH, 09-13-2007 10:10:50  
So is the fuel leaking from the fuel tank through the injector pump? How is it getting into the oil? Through the injector? or will the pump leak directly into the engine block?



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K.B.-826

09-13-2007 16:08:23




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 Re: Help! Diesel overflow! in reply to David in NH, 09-13-2007 10:33:37  
This is a very common problem on anything with a Roosa-Master pump that has several thousand hours on it. There are two seals on the injection pump driveshaft, one to keep engine oil out of the pump, and one to keep fuel out of the engine oil. Get yourself an I&T manual, and you should be able to remove and reinstall the pump yourself. I would recommend taking the pump to a pump shop at that point, as the seals can be a little touchy to install without a couple special tools.

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Bob

09-13-2007 21:11:40




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 Re: Help! Diesel overflow! in reply to K.B.-826, 09-13-2007 16:08:23  
A COUPLE of special tools????



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Owen Aaland

09-14-2007 20:35:52




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 Re: Help! Diesel overflow! in reply to Bob, 09-13-2007 21:11:40  
There are two tools for replacing the seals. One is a bullet shaped tube that fits over the drive shaft so you can slide the seals over this tube and drop them into the correct groove. The other one is used to compress the outside lip of the rear seal so that it starts into the pump housing without being damaged.



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Andy Martin

09-13-2007 11:12:39




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 Re: Help! Diesel overflow! in reply to David in NH, 09-13-2007 10:33:37  
The pump leaks through the seal on the drive gear into the timing gear train.



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old

09-13-2007 10:15:27




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 Re: Help! Diesel overflow! in reply to David in NH, 09-13-2007 10:10:50  
Bad fuel pump will do that or a seal in the injector pump. Either way if the oil shows that is is to full and smells of fuel DO NOT RUN it till you fix the problem or the engine will lock up on you and cause major repair costs



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David in NH

09-13-2007 22:55:29




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 Re: Help! Diesel overflow! in reply to old, 09-13-2007 10:15:27  
Thanks for the input all! Guess there are a few things to check in the AM!



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