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Re: opening those brake bleeder nipples 200 1980

posted by  someone claiming to be Steve Ringlee on  Thu Sep 10 05:16 CST 1998 [RELATED]

I had the same problem with a FIAT (steel bleed screws in an aluminum caliper) resulting in four nipples utterly welded into the calipers. Techniques to PREVENT this from happening:

-Frequent change of fluid and regular bleeding;

-Use of a compatible anti-seize compound on the screw threads. Try an aluminum-based paste.

Techniques to open the nipples once seized:

-Liberal applications of a good-quality penetrating oil (I prefer PB Blaster) over several days.

-Use of thermal shock to loosen the threads. Try heating the screws with a hot air gun (watch your hoses!) and then putting an ice cube directly on the screw. Then apply more penetrating oil and use the wrench.

-Use six-point (not twelve) sockets so you can get a perfect fit of socket-to-screw and not round the flats.

If you have to drill them out, have a machine shop do it. One slip up on re-threading and you will lose your brakes. I,m almost of the opinion that this might be an argument for rebuilt calipers.





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