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Old 12-14-2006, 08:31 PM   #1
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I have been following the tread on ULSD problems with Cummins lift pumps over on RV.net - has anyone had a problem with theirs? The reported fix for the O ring and gasket shrinkage by Cummins is a complete replacement of the lift pump - about $8K I believe when including labor.
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Old 12-14-2006, 08:31 PM   #2
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I have been following the tread on ULSD problems with Cummins lift pumps over on RV.net - has anyone had a problem with theirs? The reported fix for the O ring and gasket shrinkage by Cummins is a complete replacement of the lift pump - about $8K I believe when including labor.
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Old 12-14-2006, 09:04 PM   #3
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Barbara and David,

Here is a link to an iRV2 thread discussing ULSD. Low sulpher diesel

We recently replaced our lift pump. The pump cost $250. I'm not sure what the labor bill was, but probably no more than 1-2 hours were required to do the job. We had other work done so the labor was billed with other repairs. I would guess about $450 for the lift pump and labor.

I don't know what would cost $8K. Even injectors and an injector pump couldn't be more than $2K or $3K .
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Old 12-15-2006, 08:05 AM   #4
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I should learn to read better - - it was $800 that was being charged at a Coach Care facility to have the lift pump replaced.
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Old 12-15-2006, 04:43 PM   #5
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Barbara and David,

What's a decimal point, as long as it is in our favor
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Old 12-16-2006, 03:24 PM   #6
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We have a 2000 Alpine with the 350isl engine.
What are the symptons that caused you to have the engine work done?
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Old 12-16-2006, 03:44 PM   #7
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Make the engine a Cummins 350 ISC
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Old 12-16-2006, 04:28 PM   #8
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We had a very few drips when parked at the bottom of the transmission bell housing . There are a couple of hoses that attach to the bell housing also. The fuel was running down the hose. It wasn't much fuel. We lifted the bed and I could see the leak at the lift pump, mounted up high on the left rear of the engine (facing the rear of the coach).

Cummins replaced the pump , but talking with other members here, we wonder if just the gaskets could have replaced .
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Old 12-16-2006, 04:48 PM   #9
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That seems to be the discussion on RV.Net about whether there is a need to replace the whole lift pump when it appears to be the O rings and gasket that shrink with the new ULSD fuel.
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Old 12-18-2006, 01:06 PM   #10
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Here Cummins originaly said that the new ULS fuel would have no affect on the ISC. Guess I will wait and see, have folks been getting the lift pump replaced under warranty?
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Old 12-27-2006, 08:21 AM   #11
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Tom & Patty

Thanks for the reply! My pump hasn't started leaking yet, just a matter of time I guess.
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Old 12-27-2006, 03:16 PM   #12
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As I recall Cummins people at the N, Carolina pre rally had indicated that if you were using the new Ultra thin fuel you should change your oil at every 1000 miles or change the type of oil that you are using. Do not quote me on that but there was a significant distinction between what we are using now. The different engine oil made the difference for the different viscosity of the oil.
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Old 12-27-2006, 04:28 PM   #13
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Do you think truckers are going to be pulling in and changing oil every 1000 miles? Three or four oil changes going across country?
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Old 12-28-2006, 04:16 AM   #14
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Barbara & David, I certainly agree with you about the truckers or anyone else for that matter. I believe the answer was in using the proper oil in the engine, which would correct the 1000 mile issue. The indication that the Cummins Rep. said was to use a different engine oil and we would be okay. I honestly cannot remember what the lube oil is but I am certain that Cummins or WRV could clarify that question.
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