Postby Hasbeen » 09 Sep 2017 02:06
My 7 studs had no grease, but also no corrosion on them. This could be a factor of our climate, but they were just slightly oily to touch.
I believe some screw into the bottom of the hole & lock themselves, in the sane way that a lock nut works. I had 3 studs screw out easily with a screw driver, 2 required a nut to be welded onto the stud, [one twice when the light first weld broke, & the rest came with lock nuts.
All studs once started, even those that required nuts welded to them, came out easily with fingers, once started.
I screwed the new studs in fully by fingers, backed them off a turn, & fitted the new nuts with lots of grease on the studs. I hope this will prevent the nuts screwing the studs in tight, & stop them locking in again, if that is what happens. I'll report if ever I am unlucky enough to have to remove it again.
Hasbeen