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post #1 of (permalink) Old 09-11-2005, 05:30 PM
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Brake MC line Help

I'm redoing my brake lines with stainless....brake system upgraded using the YJ booster...and I did not save my old lines when I pulled them off about 9 months ago.

Would someone quickly confirm for me....the front port on the MC goes to the rear brakes and the rear to the front? I'm 99.9% sure this is right....but at $5/ft on the stainless steel lines, I would rather not make a $40 mistake.
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post #2 of (permalink) Old 09-11-2005, 06:25 PM
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Re: Brake MC line Help

The larger reservoir will be for disk brakes. The only adjustment as the pads wear is to move the cylinders out farther by pumping fluid into them.

Here's a drawing from the '78 FSM. It's not real clear about the routing, though. I wonder where the line to the left front brake comes from.

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post #3 of (permalink) Old 09-11-2005, 06:32 PM
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Re: Brake MC line Help

Here's a picture of the plumbing to the combo valve.


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post #4 of (permalink) Old 09-11-2005, 06:54 PM
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Re: Brake MC line Help

Thanks Jim....that is what I thought.
I'm making a slight mod to the front....I'm running a single long flex line down to the front axle and then connecting each wheel to the line on the axle using a short flex line.

I'll send pics when I'm done.
post #5 of (permalink) Old 09-12-2005, 07:33 AM
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Re: Brake MC line Help

Have you thought that through completely? The combination valve gives you redundancy in front, which does about 80% of the braking. There are two separate lines coming out of the combo valve. If one line breaks, the valve will close it off and you'll still have braking with the other front. Not a great situation but better than nothing. How do you plumb a single front line into the combo valve.
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post #6 of (permalink) Old 09-12-2005, 09:26 AM
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Re: Brake MC line Help

I've seen it done several times. Talked to several people about it...
As for two lines, no redundancy there. It's a straight connection between both ports...loose one side, you loose the other. The only reason they have two ports there is because it was easier to use it as the T instead of adding another one further up on the frame. All I have to do is put a plug in the unused port.

If there is anything that I am doing that might reduce the 'robustness' of the system, it's by adding a third flex hose. However, I'm not using a cheap rubber one, and I'm making sure that it is protected from trail damage. Considering how long the current one are on the outside....I think I'll be a little better off when I change them to a real short one....a lot less hose to get hung up on things.

Nothing is set in granit yet.....but thanks for looking out for me.
post #7 of (permalink) Old 09-12-2005, 01:56 PM
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Re: Brake MC line Help

Guess I was thinking of the front/rear close-off valve. Carry on.
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