C15a brake tube size
 

I’ve tried searching the forum and can’t find it so I’m asking now. What size is the hard brake lines in these trucks?

Thanks

Jordan,

My 1941 parts manual says 1/4" steel tubing. All the fittings off my C15 (4x2) correspond with this.

Owen.

C15A-04 dated 1945 agrees on 1/4".
Although there was no remaining line on my C15A (at least none that I would trust due to the other things previous owners had done) 1/4 fit everywhere to wheel cylinders, soft lines, T fittings, master cylinder....

Thanks. I never thought to look in the parts book. :doh: Much appreciated.

Most trucks of that era were 1/4"