Originally Posted by jefhuf
I tried a few searches but wasn't sure how best word it so figured I would make a new post...while tearing apart the front end in my 90 last weekend for some much needed maintenance and new brakes I again reminded myself of a question I have had for a while. Why do the front brakes have a flex line that connects to a small hard line on top of the swivel ball and then to the caliper? Why not just have the flex line go straight into the caliper?
between the frame and axle you need a flex line in order to absorb the pivot pint of the steering, other wise a hardline cannot be used at a pinch point.
the reason it runs from the caliper to the swivel, is because the caliper does not need to be removed on a normal brake procedure, this was done so the the steel lines stay closer to the caliper so they in turn will not become entangled on debree while off roading and thus break away.
lr implied that the mounting of the rubber line high above the axle would better its chances of survival in off road conditions...(how often do we trek in debree deepen than 75%the height of the wheel?).
when you read the stuff they feed you in training class it makes sense, since the earlier trucks were designed with the intention that they would be off roaded on a normal daily basis.
the newer units althou capable are more bling than it's inventors ever had in mind.