Quote:
Originally Posted by Electric Dave
Shark, did you re-tap for 4mm? How did that go being unable to take the front part off?
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Dave, first
I DO NOT RECOMMEND THAT ANYONE RETAPS THEIR MOTORS. The risk to damaging the motor/coils is very high (there is only a few mm of clearence from the endbell to the coils). And that's why I didn't mention in my post. It is much safer to send it to Neu and have them re-tap or exchange for a m4 can. But that being said I just could not sleep seeing that huge motor held on by two tiny m3 screws, I had several motors loosen up (slip) a few times and I think it could be related to the m3 screws that stretch or the small heads dig into the mount causing the looseness. For the m4 screws I used a mill to drill the holes, with the mill you can set it to only travel a specfic amount, so I measured the depth of the holes and ensured I was well short of the coils. You have to take the motor apart so you can clean out the metal chips. I used a special tap (blind hole) that allows you to tap in a very shallow hole, normal taps have a starter point and they need to be feed deeper into the hole, which could hit the coils. When cleaning out the can I was careful not to blow out the bearing grease/oil, nothing kills a bearing faster than lack of lube.
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