[sp4149]

Last month when I flushed the brake system, I wasn't able to bleed the outside valve on the right front caliper. All the others opened and closed smoothly, no real effort. But that front one was frozen tight. After trying flare nut wrenches, PB Blaster, and metric combo wrenches I gave up. I ordered new bleeder valves and this week decided to try again. I tapped the screw with a hammer, tried to tighten it first, nothing would break it loose. I tried a 'Gator Grip' socket, which promptly rounded off all remaining flat surfaces. This has become a CHALLENGE. Visegrips, channel-locks; it just sits there unmoved.

What to do next? I'm thinking of getting in with a grinder, creating some flat surfaces again; then filling a socket with J/B Weld and inserting the epoxy filled socket over the remnant of the bleeder valve, letting it cure and then torque it one last time. Then what? a bolt extractor if it breaks off?



-sp4149

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[oppositelock]

Only choice is to soak, soak, soak and hope it does not break off. When it does, you'll have to use an extractor to get the remaining bit out. Be careful, otherwise if the bleeder seat gets damaged the best option is to get a used caliper.

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[unknown4u]

try to use a flame to heat the bleeder. Maybe it will help.

otherwise have you used a solvent spray?

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[FRporscheman]

Dremel a few sharp surfaces (need not be hexagonal) so that a small jagged-tooth vice grip can bite it real good.



Drive and make your brakes nice and scorching. Wear good gloves. Put the vice grip on. Then cool the bleeder valve with something cold, like a chunk of dry ice, ice cube, inverted spray can of compressed air, etc. Turn the vice grip as you cool the bleeder, and hopefully it will all work.



If all else fails, weld a socket to it. JB weld won't do anything here.

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[nissanite]

I used to work at a high performance repair shop. When this occured the tech would heat "just" the bleeder to red hot. Then let it cool. As the bleeder heats it expands & breaks the corrosion. Then used vise-grips to remove the old bleeder. DO NOT HEAT THE CALIPER. Just the bleeder. Also wait until it cools.

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