![]() Once everything is aligned, the fixture and mill table is locked down and then we get started. When we do these, they get fixtured in a milling machine using a dowel or drill in the mill chuck to locate the part using the port at the bottom of the bleeder hole. The threads, the seat (bottom of the hole) and the port (hole in the bottom of the hole) must all be concentric and on the same axis in order for the bleeder to seal. We might not have enough thread left in the caliper at this point, and the only way fix them is a bit involved.going after it with a hand drill and installing a heli-coil/time sert is not going to work, and will destroy the caliper. The heat from welding and the smack will work 95% of the time. The way to extract that bleeder is to shield the paint as best you can and then start stacking welds on to of the bleeder until there is enough to grab onto it with vise grips.once you've got 3/8" or so of weld stacked on top, smack it sharply with a hammer, this helps break the threads loose, then grab it and try to work it out. I do a lot of bleeder extractions and bleeder thread repairs. If the bolt couldn't unscrew itself without breaking, an extractor 1/2 the size most certainly will not be able to. In cases where the fastener broke while loosening, we know that the threads are locked up.which is of course, why it didn't just unscrew. If a bolt broke due to fatigue or overtorque/overstretch, then the threads are likely in pretty good shape and the extractor is simply a tool with which to turn the thing that you otherwise couldn't grab onto without an extractor. The key to dealing with broken off threaded things is to understand why/how they broke. Any advice would be greatly appreciated!ĭon't use any sort of extractor.you'll break it. Not a very urgent issue, but im scared one of these broken bleeder screws will begin to leak, and then its a very urgent problem. we were told to drill it out but for one they are so small, and two we began doing that and it def seemed like the caliper would crack if we kept on so we stopped. ![]() im trying to avoid having to replace the entire caliper. I ended up buying new bleeder screws and replaced the ones we were able to unscrew from fear that may happen to those and then not being able to flush a brake caliper at all. Anyone else experience this? ofcourse im assuming my cayenne never had a brake fluid flush in its life which led to this. only one caliper had both bleeder screws come off properly. luckily they just broke clean off so none are leaking so we ended up just flushing from the opposing bleeder screw. Recently when trying to do a brake fluid flush on my 2013 cayenne S, 3 bleeder screws on 3 different calipers broke off when we tried to loosen them.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |