Hi all,

I’m replacing my stator and was using my torque wrench at the currect setting (9ft lbs) for the wire clamp bolt, but the head of the bolt broke off. I’ve tried extracting it with an extraction drill bit but that hasn’t worked.

Is the clamp really necessary? The cable doesn’t look likely to touch the dowel pin.

 

It's there to keep the wires clear of the spinning rotor.

 

First off, you don't need a torque wrench for that kind of bolt [its only barely hand tight] and secondly, no way it was 9lbs/ft and broke off so get a new torque wrench. But yes, you need that clamp.

 

Cobalt drill bits work great on bolts. Just dont drill through your cover.

 

Thank you all for the replies. I was trying to rush something, because yeah, obviously they wouldn't put the clamp there for no reason. Caved and ordered a new cover for £25 because this one is probably beyond help now.

At least I know next time not to use a torque wrench on that bit. Weird that it didn't work on that bolt though but does on every other one.

 

How low does your wrench go? The rule of thumb is the aren't very accurate for the first and last 10% or so of adjustment. At 9lbs/ft you should really be using a lbs/inch wrench instead.

 

I learned early on not to trust torque wrenches 100%, also need to go by hand feel and stop tightening if ur gut tells you its not quite right. Your torque wrench might be fine, Sometimes what happens is your bolt is weak already and starts stretching/torsioning as you attempt to torque. The torque wrench will never click because technically it hasnt reached the torque, but you are just twisting the upper part of the already weak bolt until it just breaks. Still, it never hurts to calibrate ur torque wrench and Bored is completely right better to use a smaller increment one as they tend to be less accurate in their lower ranges