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Topic: Cummings Fuel Transfer Pump Leak (Read 503 times) previous topic - next topic

Cummings Fuel Transfer Pump Leak

Back again. The coach is home and doing the next round of updates and repairs. Now. I noticed a fuel leak when in Galveston in April and thought it was a leaking from the fuel water separator pet cock. Nope. Came back on our last trip out in Eastern Kansas and saw a bigger leak. Looks like the fuel transfer pump is leaking internally. What's the best way to order the correct part and are there any pitfalls to watch for when replacing it? Can you reseal it and would that be worth doing? Photo of the culprit attached.
Ian Minaert
1993 U280 Build #4324
Cummins 8.3, 6-Speed, Exhaust Brake, Aquahot
Valley Center, KS

Re: Cummings Fuel Transfer Pump Leak

Reply #1 –
Cummins parts look up (need engine serial number): Genuine Cummins Parts
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Cummings Fuel Transfer Pump Leak

Reply #2 –
Ian, I see from your subject you are referring to a Cummins engine. Adding your engine model to your signature would help to better know how to answer.

Here is a thread on our lift pump:

new lift pump made a BIG difference

Re: Cummings Fuel Transfer Pump Leak

Reply #3 –
Quote from: Barry & Cindy –
Ian, I see from your subject you are referring to a Cummins engine. Adding your engine model to your signature would help to better know how to answer.

All U280's have Cummins 8.3C
All U300's have Detroits.
1994 U280, Build 4490
Deming, NM.

Re: Cummings Fuel Transfer Pump Leak

Reply #4 –
Quote from: Twig –
All U280's have Cummins 8.3C
All U300's have Detroits.
Except 1995's where CATs made up about 90% and M11s the other 10% of U300s. Just guessing on the percentage. At least three different transmissions too.

Pierce
Pierce and Gaylie Stewart
'93 U300/36 WTBI
Detroit 6V-92TA Jake
1140 watts on the roof
SBFD (ret)
 

Re: Cummings Fuel Transfer Pump Leak

Reply #5 –
Thanks everyone for the input. Turns out the Cummins shop here in Wichita has two in stock! Picking one up after work for a little over $100 bucks.
Ian Minaert
1993 U280 Build #4324
Cummins 8.3, 6-Speed, Exhaust Brake, Aquahot
Valley Center, KS