The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Brake line routing

ray_mcavoy · 05-10-2018, 04:59 PM

The ends of the flex lines have both external & internal threads.

The external threads are used with a thin jamb nut to secure the flex lines to the frame.

The internal threads should accept the inverted flare nuts on the hard lines. And there should be a cone shaped seat at the bottom of the inner hole that seals against the flared end of the hard line. The factory hard lines usually had a fairly sharp bend close to the end instead of using a separate elbow fitting.

05-10-2018, 04:59 PM	#2
ray_mcavoy Registered User Join Date: Nov 2009 Location: Sherman, ME Posts: 2,354	Re: Brake line routing - 77c10 The ends of the flex lines have both external & internal threads. The external threads are used with a thin jamb nut to secure the flex lines to the frame. The internal threads should accept the inverted flare nuts on the hard lines. And there should be a cone shaped seat at the bottom of the inner hole that seals against the flared end of the hard line. The factory hard lines usually had a fairly sharp bend close to the end instead of using a separate elbow fitting.