> Here's a related question. I am in the middle of
>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?
Although rare, it's not unusual to have to replace bearings.
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