Fuel pump plumbing

Mjfire1949 · Post by **Mjfire1949** » Sun Jun 22, 2014 12:25 pm

Does anyone have a pic showing which inlets and outlets are for fuel and which are vent lines on a M38 dual action fuel pump? I'm replacing the single action fuel pump with the original dual action pump. I think I've got it plumbed right, but I'd like to double check it.

evanso1975 · Post by **evanso1975** » Sun Jun 22, 2014 1:02 pm

Vac lines in the bottom, fuel lines in the top.
Try this, courtesy of Wes's photo album:

Post by **wesk** » Sun Jun 22, 2014 1:40 pm

When you ask a technical question always tell us what model jeep you are working on. An easy way to make this happen without any conscious effort is to add your jeep year make & model to your signature block. While you are in there updating your profile fill in your location block so when you do have problems folks can see where you are and quite often you gain new freinds willing to help you out locally.

The illustration used above is for the 52 M38's and, with the addition of the handle for priming the carb, the very early 52/53 M38A1's that left Willys with all the fording system basic plumbing. Many earlier M38's and later A1's were modified in the field for that setup. The USMC contracts in the 60's also had the copmplete fording system basic plumbing.

Mjfire1949 · Post by **Mjfire1949** » Sun Jun 22, 2014 5:07 pm

Thanks Wes. I will update my profile as you suggested