DSS chain rubbing block replacement ($%&*!!)

[BK_856er]

Try some penetrating oil on it, such as PB Blaster.

You can re-set the rivnut if you can get the bolt out.

I'm pretty sure they're steel.

I do believe that this particular rivnut is steel, so punching it out is probably not an option.  Judging from the other bolts, corrosion is not the issue, but the heavy dose of loctite probably is.  After it was already spinning I heated it with a heat gun until the plastic started to melt and then tried to remove the bolt while providing upward force under the rubbing block with a wedged screwdriver.  No dice.

I think the next course of action will be to drill a small hole into the top flange of the rivnut and insert a pin to stake it in place and prevent rotation, hopefully allowing bolt removal and re-setting of the rivnut.  Or maybe I could just notch the flange with a dremel cutting wheel and jam the rivnut steady with a screwdriver tip.

BK

[aaronb]

here's a thought, if you can press down on the bolt head hard enough to keep the nut from spinning and tighten the bolt it may be enough to reset the riv-nut, then back the bolt out like normal

[Gimpy]

If you want to fix permanently with a very involved solution and, the swing arm and the rivnut are both made of steel (or both aluminum) you could also weld around the shoulder of the thing to lock it in place. I'm not certain re-crushing it to get it to seat without rotation will work. These things seem to fail very frequently when installed for the first time. But I'm not there looking at it