> Here's a related question. I am in the middle ofAlthough rare, it's not unusual to have to replace bearings.
>cleaning and re-positioning the motor on my M400. Got
>the new grommets and washers, too. Upon removing the
>belt I noticed that the flywheel/capstain turn freely.
>However, the bearings make a little noise, as if the
>balls are loose inside. Is this normal, or does it
>indicate a need for oil and/or bearing replacement?
MRC 104KSZZ
NSK 6004VVC3
The Prof showed me the trick of sticking your ear at the other end of
a metal bar or dowel that's against the bearing block and then
turning the capstan by hand. Crunchy sound = bad---replace the bearings.
I've thrown oil at mine from time to time. I don't know how much
actually gets in there---I need to get me one of those needle oiling
things for the next time.
Regarding motor oiling...At the Philly Symposium
(http://www.kleonard.com/mellotron/philly0501/working.htm) we went
over this and observed a few motors being cleaned/oiled. In addition
to cleaning out the brushes, I do recall having to put a few drops of
oil at either end of the shaft where it runs through the motor. I've
done this on #805 when I had the motor out and on "Mark" the Mark V
(http://www.kleonard.com/mellotron/mpb050604/index.htm). However I'm
not sure how effective this is. I guess the idea is that some of the
oil works its way in there, and that's that. Again, having one of
those needly oilers might be a good idea.
Oh, I used Hammond oil. I figure if it's good enough for one of those...:-)
I'm sure the Prof or one of the other tech guys can give us some more
detail (or un-do the lies I'm spreading :-) ) if needed.
...kl...
M400 #805 - old motor
M400 #1037 - new motor
** Ken Leonard - Web Table of Contents: http://www.kleonard.com
** Get Outdoors New England: http://www.GONewEngland.org