farmall f12 fuel pump push rod

m long · Jul 4, 2012

what is the expected travel on fuel pump push rod on f 12 I'm getting little over 1/8th inch

rustred · Jul 4, 2012

that is not enough travel , the end of rod may be worn out along with the cam essentric. just from memory should be over 1/4"- 5/16" travel on rod to operate pump. pull out your rod and have a look at it. will need to remove pan to check cam.

El Toro · Jul 4, 2012

If that 1/8th isn't enough to move the pump arm you can braze some on the push rod that rides on the cam lobe. My late dad had a 1939 Ford he bought just before we into WW2. When I was old enough to drive it we seem to have a lot of fuel pumps failing and he had a local shop to replace them. I went to school with a teen about my age and I was telling him and he said to talk to his dad. He told me to pull the push rod on the pump and he brazed about 3/16" on it then ground it down nice and smooth using a flat file. Never had any more fuel pump problems. His dad was a mechanic and a machinist. His son had his own repair shop after he served in the Army. Hal

m long · Jul 5, 2012

I think I will go with an electric pump as the cam appears to be the problem and I don't want to pull the engine and install another cam. Thanks for your comments I did not think 1/8" was enough.

rustred · Jul 5, 2012

now you will need a 12v batt. also.

Jim Becker · Jul 5, 2012

Your problem is probably just a worn push rod, exactly as El Toro described.

m long · Jul 6, 2012

I know, May not be the best but it will start easier I hope

farmall f12 fuel pump push rod

m long

New User

rustred

Well-known Member

El Toro

Well-known Member

m long

New User

rustred

Well-known Member

Jim Becker

Well-known Member

m long

New User

Similar threads