General topics » Overtightening of screws

Hi all

quick question. A local garage has overtightnened the screws on the handlebar when doing some very basic work and now there seems to be this constant loose feeling when breaking or hitting bumps that is driving me crazy.

I have used a torque wrench to retighten to the correct setting but it still remains. Can this be remedied with new screws?

thanks

The question is if you stripped the threads in the holes. If so, you need to drill them out and install a heli-coil or use a threading tool to recut the grooves.

Ok thanks. So it can be remedied , that’s good news. Would
This loose feeling indícate stripped threads ? They still seem to tighten ok.

Just found this local page. Which size
Would be needed ?

tornilleriamalaguena.com/tienda/112-helicoils-casquillos-roscados?gclid=EAIaIQobChMIs_vGj5Cd9AIVJ49oCR18TAkFEAAYAyAAEgLSh_D_BwE

Zitat von spainy im Beitrag #1

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Hi all

quick question. A local garage has overtightnened the screws on the handlebar when doing some very basic work and now there seems to be this constant loose feeling when breaking or hitting bumps that is driving me crazy.

I have used a torque wrench to retighten to the correct setting but it still remains. Can this be remedied with new screws?

thanks

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You need to remove the screws and see if the holes are stripped. That can be tricky, but that's a sure way to know. If a shop overtightened and stripped the holes, they should pay for the repair, and DON'T let them do the work.

Also, what do you mean "overtighten?" If it keeps turning when at max depth, threads are stripped. If it was just overtightened and you loosened them, maybe you loosened too much.

If you managed to loosen them and then re-torque correctly then the threads are not stripped , you would not be able to get to to the correct torque with stripped threads. Seized maybe , but then they wouldn't turn at all.

Zitat von crossthread im Beitrag #7

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If you managed to loosen them and then re-torque correctly then the threads are not stripped , you would not be able to get to to the correct torque with stripped threads. Seized maybe , but then they wouldn't turn at all.

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Judging by Spainy"s earlier posts, the screws seem to be the 4 hex bolts attaching the hanble bar assembly to the top triple clamp.

These are 8 mm stainless.

If they were stripped, the shop used a rattle gun or they hired Mongo from Blazing Saddles as a mechanic.

My guess is head bearing adjustment or maybe loose caliper mounts or even wrong pads. These will allow movement and give clunks etc.

Zitat von Aussie Import im Beitrag #9

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My guess is head bearing adjustment .

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Yes it was head bearing originally. They kind of messed it up a few times but it was a "mate" so I just had to keep going back and saying - can you re do it?

He´s moved to Malta now so kinds screwed on that respect - padron the pun.

I went to a mechanic yesterday and there is still loose head bearing so I was gonna just take it to him next week and get it sorted. THat would explain the looseness I keep feeling.

However I do still have this torque wrench lying around and have seen it done so it can´t be too hard.......he says. Which torx bits do I need for the main big screw under the bmw badge?I think someone mentioned that needs 100nms?

Also what size for the bars clamp ? I can just undo them and redo properly. I know theyre 19nms so should be straightforwardish.

"Step away from the toolbox"

Something to remember for all of us is that if you use Copperslip or similar anti-seize product to coat a thread. You will get an increased torque value as friction is reduced.