Brake Problems

[jaredts]

If you have wet spots along your brake line that's your problem.  It doesn't matter how small they are or if they drip.  You'll suck in air from those spots and not be able to develop pressure or bleed the rear brakes--the combination valve will likely stay tripped as well.  I think there's a good chance you'll be good after you replace the line to the rear.  I recently replaced the combination valve on my truck, but I can't remember for sure what size wrench the rear line took.

[howlinwolf]

the rear line is just seized. 

where can i order the combination valve

[jaredts]

If you're going to replace the line anyway try cutting it off the fitting at the combination valve and using a 6 point socket.  If you need a combination valve a pv2 was a direct replacement for my c10.  Summit, ebay, or Classic Performance Products on that (assuming it also works for your k10).

[howlinwolf]

if it works by power going to the bulb and the switch grounding out, it is indeed activated and stuck.  i took my multimeter, hooked it to the switch solid, and touched it to the positive on the battery and had a full 12.6 read on it

[bd]

You might be able to free up the valve, but it sounds like you may have had some long-term water contamination in the brake fluid, causing internal corrosion and multiple failures (wheel cylinders, perforated lines, etc), in addition to the obvious external corrosion.  Conservative approach would be to replace the valve along with the lines, etc, and give it a thorough flushing with fresh DOT 3 or 4 fluid.

[howlinwolf]

most of the way there already. k. ill work on it.

[howlinwolf]

I cannot remove any of the lines from the valve. Any way to help free the fittings

[jaredts]

Penetrating oil, wd40, pb blaster.  Only use a flare nut/line wrench, not a crescent.  On lines you're replacing you can cut them off and use a 6 point socket if you have to.

[howlinwolf]

Got it loose. One fitting had the hex snap off, and one rounded to the point i just clipped it.
Got it freeed up inside too. The piston and bore look good as well, so as long as i can get the fittings out im gonna reuse it. I dont have the money to replace the valve and the lines and such, so there is my comprimise

[howlinwolf]

alright guys, exploded view of the combo valve comin up. i remember someone was asking for photos in another thread