I highly doubt the bleed screw on my '88 Max has been turned in 14 years. This would explain why the head of the screw snapped off on my rear passenger side caliper as I was attempting to bleed my old fluid out and replace it with shiny new fluid. Anyone have any suggestions on how to get the rest of the screw out? Or is there anyone out there who has a spare rear caliper laying around that they'd like to sell?

 

If there is any part of the screw left where you could use a vise grip plier , try that. You could also try a screw extractor, but if it broke that easily I don't think that will work.

Drill and tap for a new air bleeder screw is what I would do. Then really flush out any dirt and metal chips.
But you really have to watch out how deep you drill. I believe the bottom of the hole has a taper fit. If you do it wrong then it may not seal tight. Get the new screw first and see what it looks like.

Good Luck, AL

 

With the caliper off the car and in a vise, soak the threads with a good penetrating oil and let it sit for a while. When you think it is ok, heat the area with a torch (propane will do just fine). Get it really hot! Pound a small easy out into the hole and hope it goes.If it doesn't go easily, heat it more. Be careful not to burn up the seals, though.

 

John's reply is really your best bet, unless there is some of the screw protruding out enough to grip with visegrips.

Also, if you follow John's advice, and end up burning your seals, refer to my write up in the FAQ section about rebuilding the rear calipers. Replacements are usually quite high for the rear, due to the parking brake assembly, etc...

You could also try and either drill it out, by using a bit slightly smaller than the hole, to thin and weaken the walls of the bleed screw. Then, see if you can pry it out. Of, if you have a small enough cold chisel or a dremel type tool, cut it cros ways enough, if possible, and use a flat-head screw driver to unscrew it...

But all of these suggestions come after thoroughly soaking the screw in a good penetrating oil, like Liquid Wrench, etc...