Community Forums

rssnape · 03-30-2021, 02:23 PM

Those of you that have replaced the pump, have you replaced the pump, manifold and bracket or just the lower pump and gasket with the 3 bolts?

If I can just replace the pump, gasket, it looks like it would be an easier job.

Thoughts?

bubby124 · 03-30-2021, 07:22 PM

I replaced the whole thing because that was what I could get but I don't think there would be a problem to replace just the pump

Ray,IN · 03-30-2021, 08:06 PM

To replace my entire lift pump the starter had to be removed to access the bolts holding the pump to the block.

rssnape · 04-01-2021, 11:38 AM

Here is the Parts list for the Lift pump from Cummins Parts.

jacwjames · 04-01-2021, 07:05 PM

Have you been able to purchase just the pump itself. I did a quick search with no luck.

There are gaskets available on Ebay for ~$15, two different types depending on SN.

rssnape · 04-02-2021, 03:16 PM

I bought the pump complete from Cummins. I thought about trying the gasket route, but needed it for a trip this week and couldn’t gamble on the gasket being the issue.
I’m glad I did as I believe the pump was leaking from the electrical connection. The pump sits above the starter inside the frame rail, so it’s almost impossible to see it from below.
Going through the bedroom access above was relatively easy to remove the pump. When replacing it make sure to connect the power at the bottom of the pump before dropping it into position.
It’s held on by 3 bolts to the block.
The new pump had 2 extra ports that the OEM didn’t have so make sure to order the right size plugs when you get the pump.
It was easy to reach the fuel filter while I was in the bedroom. It had one more fuel fitting and 2 bolts to remove the whole assembly and take it to the bench to remove and replace the filter.
I cycled the lift pump 3 times, then started. It stopped after a bit so I cycled the lift pump again and started with no further issues.

Big thanks to Dewey219 for his advice!

Willie Nelson.. On the road again!

Roy1 · 04-03-2021, 10:28 PM

If it were mine I’d use the money to install a fass pump rather then another lift pump you would be surprised how much better the motor will perform.

bubby124 · 04-04-2021, 11:54 AM

I replaced my lift pump it was a pain then a few years later I installed a fass pump and left the lift pump in place just rerouted the fuel lines around it was much easier then replacing lift pump