MTFCA Forum

Anyone have ideas how to tighten the encircled nut.
It is 5/8 across the flats and a normal 5/8 end wrench is very ackward.
Ron Patterson

If you have a spare ring spanner then cut a piece out the width of the pipe.

Flare nut wrench.

https://www.ebay.com/itm/255218548825?c ... gIxM_D_BwE

Very awkward..no room. I put a new shut off valve to the carb and used an open end wrench and had to attack it on an angle with the top of the wrench angled toward firewall. It's a slow process but worked for me.

Sacrifice a 5/8” open end wrench to the bench grinder god… thats 3/4” to the left and 5/8” on the right. It’ll quickly do the job.

Thanks Dan
knew what it was but couldnt come up with the correct name.
Ron Patterson

The 4th wrench down, the “tubing or line wrench” is what you need. It is basically a 6 sided box end wrench that has a slot cut out of it to allow it to fit over the tube then slides onto the nut.

You can make one of these by using a Dremel tool with a metal cutting disc to cut a piece out of a thin walled, 12 sided box end wrench, wide enough to allow it to clear the tube, then you can slide it onto the hex fitting. With a slotted box end wrench you have 12 sides instead of 6 so you don’t have to turn it so much during repositioning. Turn it, slide it off, reposition, slide it back on, turn it, etc. Jim Patrick

I have had a set of these wrenches for years.
A google search of “offset head open end wrench” will get you to several sellers

I don’t believe an open end wrench will work because the sides are too fat to fit in the space on each side of the hex fitting, unless the sides of the wrench are ground down thin enough to fit into the spaces. Jim Patrick

All you should need to do is take off the hood shelf on that side and you should have plenty of room to disconnect the gas line.

Harvey Bergstrom wrote: ↑

Tue Dec 26, 2023 12:18 pm

All you should need to do is take off the hood shelf on that side and you should have plenty of room to disconnect the gas line.

That just adds way too much work to it.
This ain't rocket science. Like Jim said...get that offset open end wrenches and cut the sides down thinner so they fit in. I've been using a small crescent wrench for years with no issue. The hardest part is just getting the stupid nut to line up square enough to the threads to get started. No matter what you use, you're just gonna have to be patient enough as you'll only get very short turns each time. It'll get there!

Do yourself a favor Ron & purchase a set of flare nut wrenches - inexpensive and you'll find other uses for them !

Jim, the second half of your sentence is exactly what I was suggesting and pictured. Heck, you don’t need “12 sides” to tighten or loosen that fuel line nut.

Crowsfoot socket will work as well... Connected to a T handle slid all the way to one end, it makes a decent job of it.

Why buy a modern wrench?

Your Ford tool kit came with the proper tool, works fine.

The 1917 Band Nut and Pack Nut Wrench. The ends of the jaws of this wrench are factory formed splayed or slightly apart, so applying the wrench also at an angle will allow the wrench jaws to easily pull up that pack nut! . That is also why the trans band end works too, as you approach the band nut also at an angle.

See Kerry's first response. Subsequent posts suggest the same thing, but I suspect they didn't recognise what a ring spanner is. How you guys get a box wrench out of a circle is beyond comprehension. Does it hark back to the horse and cart days when axle nous were square, like a box?

Dan, I must check out using T1917. Makes perfect sense.

Allan from down under

I saw a ratchet and socket set years ago that I wish I had. It was one that the sockets slipped into the ratchet and were of a tubing wrench design. You lined up the opening and slipped it over a tube and could tighten down the flare nut. Slid it backwards and lined up the slot and took the wrench off. It was not big and bulky and more the sise of a 3/8 ratchet handle.

Was dealing with this today. Don't seem to have that wrench in my collection, so a small metric adjustable and little turns did the trick.