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Check your ESA nut

youngjohn

Well Known and Active Forum Website User
Non-VOC Member
I did, and this is what I found:

DSCF4965-1.jpg
 

john998

Well Known and Active Forum Website User
VOC Member
Hello,
Mercurycrest is correct, lack of radius will/may make this happen. It is remarkable that this failure is not more common as there is little meat at the change of section.

Regards John.
 

ogrilp400

Well Known and Active Forum Website User
VOC Member
I agree John. I'm amazed that given the torque that these nuts are done up to and the pounding they get from the ESA on full compression, it is a wonder that more haven't failed here.
 

Howard

Well Known and Active Forum Website User
VOC Member
Drilled holes are nowt to do with it.

The deep scoring (poor machining??) hasn’t helped. It seems to have broken along a score mark not at the change of section (or is it my eyes/quality of picture).

I’ve not had my ESA apart for years, does the thread on the crankshaft go to the end of the nut? If it does, I don’t know how it breaks there, other than tightening/slackening. I’m a bit concerned that I use an impact driver to release mine – I’ll have to check it next time I’m in the area.

H
 

Howard

Well Known and Active Forum Website User
VOC Member
Sorry, double posted somehow.......... To be sure, to be sure........ maybe :)

H
 
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