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I've currently wrestling with some issues on my '98 CBR600 F3
2 of the three bolts on the right engine hangar plate are spinning, just above the CCT.
The nuts are still welded to the back.
They are both in too tight to be able to prize under the head (there is no play along the axes of the bolts).
I've tried to push / hammer from the back while unthreading but that isn't working either.
I've also tried removing the 3rd bolt and using the hangar plate itself as leverage but still no dice.
I'd really rather avoid having to buy the hardware to drill them out or grind the heads off (I don't think my dremel will make it!) but I've run out of ideas... any suggestions?
Pics might help. I'm not sure exactly what you mean by spinning bolts
Do you mean that the head has stripped? If so you can use the dremel to cut a slot into the head of the bolt to get a screwdriver on it
Or do you mean that the bolt is spinning freely in the threaded nut? ie the threads have been destroyed and it just goes round and round but won't loosen off?
If so, you're gonna have to cut the head off the bolts to get the part free. You can carve away at it with the dremel but make sure to give the tool a chance to cool down every couple minutes or else it'll overheat and die. A better option is a grinder or cutoff wheel. I've got a cheap $30 grinder and it's served me well
If you're replacing the parts anyway and have access to the backside, a nut splitter would probably make quick work of it. A lot of parts stores will rent them out for free. You may or may not need to hack/chisel the spot welds as well though
Or do you mean that the bolt is spinning freely in the threaded nut? ie the threads have been destroyed and it just goes round and round but won't loosen off?
Yep, that's exactly what's happening
.
Originally Posted by tentacleslap
If so, you're gonna have to cut the head off the bolts to get the part free. You can carve away at it with the dremel but make sure to give the tool a chance to cool down every couple minutes or else it'll overheat and die. A better option is a grinder or cutoff wheel. I've got a cheap $30 grinder and it's served me well
If you're replacing the parts anyway and have access to the backside, a nut splitter would probably make quick work of it. A lot of parts stores will rent them out for free. You may or may not need to hack/chisel the spot welds as well though
That's what I feared. I forgot to add, I also tried the old mole grips on the head. Oh well, I'll tackle it when I get the chance. At least I know the hangar plate isn't going to fall off
Just to follow up in case any one else has a similar problem with their hanger plates. I did get both bolts off without drilling / grinding: a g-clamp with an oversized socket over the top of the bolt head. Worked a treat, pushing them both out from the back
02-07-2018, 10:50 AM
Spinning bolts
