Community Forums

windsor02 · 06-11-2013, 05:45 PM

During my last trip to Cummins for service I was told that my Fuel Gear Pump was leaking and that to replace it was about $2400. I have since ran the engine while in storage and can find no seepage or accumulation of fuel on the ground. After talking with the mechanic again he couldn't remember how bad the problem was but said if it had nothing on the ground he would suggest watching it closely.

Is there any one out there who has had a similar problem who might shed a little light on this subject.

New to the forum, but thanking you for your advise.

Skip426 · 06-11-2013, 08:05 PM

Did you talk directly to the first mechanic ? I'm thinking whoever you talked to was not the mechanic who reported the leak, just a deak jockey. I could understand a report of a fuel leak at the injector pump or an oil leak in the area of the injector pump gear drive. But the discription " Fuel gear pump leak" makes no sense at all.

And at $2200 for the repair , I'd say show me the leak and get a second opinion.

windsor02 · 06-11-2013, 08:58 PM

As it turns out, it was the same mechanic who first discussed the leak with me at my last service at Cummins. His best guess was that since I leave the MH in storage for 6 months during the winter the seal has probably formed a flat spot.

GregOk80 · 06-11-2013, 09:06 PM

I think they might have been talking about the (lift pump) what is a problem with cummins. Had mine replaced before I brought it.

dons2346 · 06-11-2013, 09:25 PM

Never heard of a "fuel gear pump". I think he was referring to the lift pump which does tend to leak. It really started showing up with the ULSD. I
Leaks were caused because the seals used were not compatible with that fuel. Good part is, the pump doesn't run all the time so it doesn't leak all the time. Bad part is, it leaks and makes a mess.

If it isn't leaking now, I would just watch it and see what happens.

windsor02 · 06-11-2013, 09:31 PM

I am not sure if it is also referred to as a Lift Pump but the estimate from Cummins says Fuel Gear Pump P/N 4089074RX
I was also told that the distributor module bolts on to the end of it.

neilking · 06-12-2013, 07:27 AM

He was talking about the accumulator pump drive shaft seal. Its gear driven. I'm not sure if it will leak oil into the fuel or fuel into the crankcase.

Skip426 · 06-12-2013, 11:46 AM

Quote:

Originally Posted by neilking

He was talking about the accumulator pump drive shaft seal. Its gear driven. I'm not sure if it will leak oil into the fuel or fuel into the crankcase.

OK , I guess it's time for me to go back to school , on Cummins parts and terms and differences between ISBs and ISCs , because in 14 years of Dodge Cummins work , I didn't hear this term.

neilking · 06-12-2013, 12:05 PM

Hahaha. That's cause I make stuff up as I go along.

neilking · 06-12-2013, 12:12 PM

Actually, I assumed it was an isc and since it's an'02 has the caps.

windsor02 · 06-21-2013, 09:12 AM

I went back to the coach and placed clean cardboard under the engine and then ran it for 30 minutes. I found no leaks on the cardboard.
I have since found out that the Fuel Gear Pump is mounted between the Accumulator and the Distributor Module which then times the fuel output.
I have a service scheduled at Cummins in September where we'll check out "the leak" a little closer. The fuel gear pump is located on the upper left side of the engine and is almost impossible to see.

DAJO · 06-21-2013, 09:43 AM

The lift pump is electric. When I replaced mine right after the low sulfur fuel came out it cost me about $300 for parts. The side of engine and starter had fuel dripping from it. The lift pump is located on the same side of engine as the fuel system, left side up above starter and very hard to see since it is covered with wire wiring harness. The caps pump I have always heard was way more than $2200, more like $5 - $6 thousand.

Dave

windsor02 · 06-21-2013, 10:57 AM

The quote from Cummins was $640.00 for the Fuel Gear Pump and $1650.00 for labor plus some miscellaneous.

Skip426 · 06-21-2013, 11:25 AM

I guess I'd better get busy and figure all the differences between an ISB and an ISC. Because I know there are no fuel system components on an ISB, that would take over 10 hrs to replace. Even with the limited access of a MH chassis.