| Author | Message | ||
     Mr_ed |
So I'm in the middle of the swap and I go to press the engine sprocket off of the rotor as per the shop manual. Even bolstered the rotor up with extra support to minimize flex during the pressing-out process. Ran the press down on it slow and easy until I heard some ominous crackling noises so I stopped, but then the sprocket popped out. Now I have three loose magnets on the rotor. Now I don't know if they were loose before (forgot to check) or if this happened on the press, but either way it's not a condition I want to re-install on my baby. Has anyone dealt with this? I did some googling but all I seem to be able to find is threads on front brake rotor pulsing...nothing about the stator's rotor (other then success stories about this swap). I'm considering pulling the loose magnets out of there, cleaning any oily residue, and bedding them back down with Hysol epoxy. I'm an aircraft mechanic on MH-60 Jayhawk helicopters and we use that Hysol stuff on all sorts of things that are subjected to hellacious amounts of heat and stress and it holds up great so I'm not too worried about it holding some magnets. I assume there's no need for the adhesive to be electrically conductive? I'm not much of an electrical guy... Many thanks in advance! Ed | ||
| Panhead_dan |
As an aircraft mechanic, you have much more knowledge than me but it seems to me that if you stressed it enough to pop magnets, it's likely to be bent. I would have it spun and checked with a dial indicator. Actually no I wouldn't. I would replace it with a used one sniped from ebay or somewhere. | ||
| Hughlysses |
I agree with the part about checking it for bending/warpage. If it's OK, I think it'd be OK to re-glue the magnets. I would bet it could flex enough during the pressing process to pop the glue joints without permanently deforming. It should be a pretty low-stress application for re-gluing- centrifugal force will tend to hold the magnets in place, plus their own magnetism. | ||
| Mr_ed |
I mic'd it and straightedge'd it and it looks good to go...I epoxied them back last night and re-installed it just. Seems to be ok. I reckon I'll know for sure in the next few hundred miles! | ||
| Tootal |
Mine creaked a bit before letting go too so I supported it in four places instead of two. I got lucky and nothing broke but I was sure it was going to. Epoxy should work fine as they are on the inside and the centrifugal force should hold them in place. |
