Makin' Brake Lines (1 Viewer)

[shipmag]

red cylinder

Thank you, I'll have to go back and install them. Just on the female end, I'm guessing.

Just finished my brake lines today.

What is the round cylinder between he proportional valve and the master cylinder?

 

[shipmag]

what are folks doing to go from the body to the frame hoses or making the coil like oem?

 

[scrapdaddy]

That's an aftermarket residual valve. 10 psi, my master didn't the stock ones, so had to add one.

 

[shipmag]

Is it ok to use nickel copper for fuel lines?

 

[cyberfalco]

Thank you,

I'm useing FJ60 axles and have elimitated the backing plates. Flex line screws right into caliper, I believe no copper washer.

On my master cylinder, I don't have the pressure vaule at the cylinder, so no washers there, either.

I think mine setup is alright, if not please set me straight.

Where did you get those lines to eliminate the short hard line on the backing plate?

 

[Blue77FJ40]

Great writeup on bending brake line: http://www.hotrodhotline.com/content/bending-brake-lines-jim-clark#.U_dX-EvspXI

Great threads on bending, showing the Fragola 900501 bender. I have it and like it.

https://forum.ih8mud.com/threads/tight-radius-brake-line-tube-bender.373693/ and

https://forum.ih8mud.com/threads/can-someone-tell-me-who-makes-this-brake-line-bender.253852/

I also use the Mastercool flaring set. Agree on using countersink for inside chamfer, and also gently use roloc disks for the outside edge prior to flaring.

 

[RWBeringer4x4]

what are folks doing to go from the body to the frame hoses or making the coil like oem?

This is my method - it works REALLY well for nickel-copper. I imagine it would be tougher with steel lines.

 

[scrapdaddy]

Where did you get those lines to eliminate the short hard line on the backing plate?

Mark's offroad. http://www.marksoffroad.net/index2.html

 

[RWBeringer4x4]

Another thing to consider with regard to early brake lines are the soft lines - particularly those that run from the Body/frame down to the axle. On my 75, the soft line did not use a flared fitting. Instead, it used a flat-fitting, and sealed with a copper washer. As a result, the T-fitting it connects to at the axle ALSO lacks a female flared fitting:

This means the long, shouldered, flared lines off more modern trucks will not engage this T-fiting properly. Below, a shot of an old line vs. a new one:

As a result, to run more "modern" rubber brake lines (often done to extend the bake lines for lifts), you will need to find a T-fitting that accepts the propper M10x1.0 shouldered, flared fittings. I just went through this. I ordered a BQ91A T-fitting from BrakeQuip, but the threads were too shallow to accept a shouldered flare fitting. The end result was pulling the (3-way flared) fitting off of an FJ60 parts truck, and running them instead. Haven't installed, or taken pictures yet, but it looks like they will work. These T-fittings are NLA from the dealership, it seems.

Something to keep in mind for those updating their brake likes - be sure to either order the appropriate, FJ40 line for your year (and copper washer to seal), or plan on finding a T-fitting that is flared 3-ways (instead of 2) and deep enough to accept the shouldered, male-flare hose heads.

Not sure if, or when, at some point along the lines, FJ40's started getting 3-way flared T-fittings, but it apparently wasn't in 1975!

 

[RWBeringer4x4]

@Vae Victus - If you get a chance, you should take a look at the T-fittings on your 76, and see if maybe 3-way flared fittings started with disc brakes. If they're not on a 76, they probably started on the 79/80 models that had a lot in common with the 60 series.

 

[Vae Victus]

@Vae Victus - If you get a chance, you should take a look at the T-fittings on your 76, and see if maybe 3-way flared fittings started with disc brakes. If they're not on a 76, they probably started on the 79/80 models that had a lot in common with the 60 series.

Yup - I'll check them out. Fronts and rears both?

 

[Vae Victus]

Also, guys, remember that Rainman is making brake lines. Much better quality and supporting a fellow gearhead: Rainman's Brake Lines

 

[RWBeringer4x4]

Yup - I'll check them out. Fronts and rears both?

Yep! On my 75, the two portions of the "T" that hard lines run out of to the ends of the axle have flared fittings, but the third leg of the "T" where the soft line connects is a different fitting. Just curious as to when the change was made.

 

[RWBeringer4x4]

Also, guys, remember that Rainman is making brake lines. Much better quality and supporting a fellow gearhead: Rainman's Brake Lines

If I hadn't bought 50ft. of nickel copper line, this is the route I likely would have taken - his stuff looks top notch!

 

[UtahAdventureGuide]

Following, I'll be doing this in a couple months