[R-390] clutch failure

[Paul Anderson]

I haven't looked closely at my 390 geartrain lately, so I don't know
the exact part you're talking about.

However, if there is no corrosion, then most likely 50 year old grease
is holding them together.

Consider a variety of approaches, usually from least offensive to most
offensive.

WD-40 is a good one, and is similar to kerosene.  Stronger solvents,
especially thin ones like  acetone, might do well.  You could try
boiling the assembly in hot water to see if that would break it free.

Once freed up, you need to flush the old grease and replace with new
if possible.

As far as the rivets are concerned... take a close look at the
assembly and think if perhaps stainless steel bolts might do just as
well.

Paul

On Tue, Jul 28, 2009 at 1:53 AM, <odyslim at comcast.net> wrote:
>  I have recently replaced a clutch gear assembly as it was locked up.
>
>  I now have 2 more that are seized. I have no more spares. They look
> easy to take apart and repair but there is one problem. I dont know
> where one would get the rivets used to hold the gear and clutch
> together.
>
>  Has anybody taken one of them apart? Is there a source for the
> rivets or can the clutch gear be soaked for a few days in WD-40
> to free it up?
>
>
> Regards, Scott
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