You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
Mrs100th has ultegra calipers on her gravel bike and the pads are retained by a flat head screw/bolt but it's sized and cack handed stupidity has ripped the screw so there's now just no way a screw driver gets any purchase. Now I've been tasked with sorting it. Tried penetrating oil but there's no purchase on the screw. Even cut out the spring but no purchase on the shaft between pads, tried the on board end but it's narrow due to the clip and just sheared.
Next?
[url= https://i.ibb.co/LPtv4G8/Screenshot-20230801-064831.pn g" target="_blank">https://i.ibb.co/LPtv4G8/Screenshot-20230801-064831.pn g"/> [/img][/url]
Drill it out and use a split pin instead?
Drill and split pin, reckon I do 3/month of these
Yeah drill it might be the next option.
A flat head? thats crap
Reverse drill bit may create enough heat and purchase to get it out. A screw extractor might work as well but pretty difficult in small sizes. ~don't try the black hardened type screw extractors that look like thread taps - they are very brittle and may well break. The type of screw extractors in this kit I have had success with but only on much larger bolts
If you end up having to drill it out and wreck the threads it doesn't really matter - a split pin will work fine
Edit: Amazonlinks do not work on here
Not sure a screw extractor would work seems a really soft screw. I'd normally put a tiny bit of coppaslip on the threads but this one seems to have been done up dry and tight.
Oops should be in bike not chat.
I cut the pin first so you can get the pads out.
Might give you enough room to get a better grip on what's left of the pin to get it out with some thin nosed grips.
The thread is at the head end of the bolt only (part 9)
You should be able to get the pads out with some careful cutting of the bolt and leave a bit to grip inside the caliper. If that fails it's drill-time
X with stu
Very common problem with those brakes - someone will probably come along to say that they stripped their brand new caliper down and put some grease on those threads, but 99% of people won't. I drilled mine out and used a split pin, then found an old socket cap (Allen key) bolt from some xt brakes and used that in the other one.
It might be too small/too enclosed but fyi
Sometimes you can ‘punch’ things out, use a punch/chisel/sharp edge etc and a hammer, first go straight in to side of head of the screw (as near the outside edge as you can or even the outside edge) to form an indent in the head, as the indent forms, gradually change the angle you are tapping at so you start to push the head in the unscrew direction.
Ie in the above a very small chisel straight down from top, make an indent in side of screw head and then try and punch it in the unscrew direction
Experience taught me to be gentle, patient and careful when there’s not much metal around.
<p style="padding-left: 40px;">Cut it and pull the pads out. See if you can get some grips on the remaining part.</p>
If not drill the bugger out
just drill it
someone will probably come along to say that they stripped their brand new caliper down and put some grease on those threads
Having read all the hoo haa about these, I stripped mine down and added some Copper Slip when initially fitted. I've since changed to hex head which you can buy as spares.
There you go. HTH 🙃