Someone answer this brake line question for me.

[crimsonride]

Sooooooo......the small reservoir is for the rears and the large reservoir is for the fronts right?

Then why does the small reservoir have the larger fitting with a larger orifice and the large reservoir hast the smaller orifice?

This is off a mid nineties 3/4 ton chevy by the way.

 

[DaveB]

What I have heard is that disc brake calipers with their large pistons take more fluid to operate.

 

[Herzog]

A little more to work, but as they wear down they require more volume to keep the pistons full enough to keep the pads close to the rotor. That’s how it works in my mind grapes anyways.

 

[crimsonride]

Yeah. I get that. So that means the large reservoir is for the fronts with the larger calipers and the small one is for the rear with either the drums or smaller calipers. I just couldn't figure out why the small reservoir had the larger line going to it and the larger reservoir had the smaller line. Either way.... i was assuming the larger line on the jeep was the fronts and the small line was the rears but I was wrong. I just hooked it up the way it fit and it works great! Now I just have to find a cap for the reservoir....my plastic and rubber band is only going to last so long.

 

[4x4_Welder]

Drums actually take more volume to actuate as the wheel cylinders have to travel further. The front pads are nearly touching the rotor, while the shoes don't touch the drums until applied. However, the wheel cylinders typically ride in the same place so don't need a big volume of fluid to take up the extra space over time.

 

[astjp2]

It was to keep the assembly line from installing the wrong lines and has to do with the front to rear bias. Tim