The Fordson Tractor Pages Forum

Just recently our Dexta has been suffering from repeated air locks at the filter and the injector pump. One of the connections at the lift pump has had a weep and on further inspection is inconsistent with others. Here's a photo...



The flow to the pump (nearest in photo) is suspect, and I think this joint is allowing the lift pump to draw air, it doesn't close up fully before the thread bottoms out. Should I simply remake the connection in the same manner as the other, I presume this is just an olive. I have measured the pipe at approx 6mm OD, what size olive should I look for?

Just after a second opinion before I look to remake this joint in my process of elimination...

Thanks for any help, Sam

Your suspect connection looks like a recent replacement, available from some repro suppliers.

I think I'm right in saying that these connectors should have a smallish flat rubber washer. Perhaps you can get one?

Or may be you would be better off making up a new 'proper' pipe?

A 1/4" olive should do it.

Gerald

I bought a new primer pump when I restored my Dexta, and it used a flare on the ends. Have you looked back into the holes to see? Your fuel line should me 1/4 inch, as well as the olive, as Gerald has already said. Best of luck.
Mark