[Mini] Knuckle joint cups

John Lieberman jlieberman37 at comcast.net
Thu Sep 24 19:08:47 MDT 2020

You guys are great!  With your tips and tricks, it should be a lot 
easier to get the left one out.

One trick I learned after I finally got the right cup out...  A drum 
sander attachment on a Dremel (or any other rotary) tool works great for 
getting rust and other contamination out of the seat before fitting a 
new cup.  And, yes, I did apply a thin coat of grease to the seat after 
I cleaned it out.


On 9/24/2020 5:57 PM, Brett Nicholson wrote:
> I hit them with a small blowtorch.  They burn and shrink. Then you can 
> just pull the remains out with molegrips or pliers.
> Clean out the seat  Aughly and add a thin smear of coppaslip before 
> you fit a new cup to make it easier next time.
> Cheers,
> Brett Nicholson (bnicho)
> Greendale, Victoria, Australia.
> On Thu, Sep 24, 2020 at 7:20 PM Richard Porter <ricp at minijem.plus.com 
> <mailto:ricp at minijem.plus.com>> wrote:
>     On 24 Sep 2020 John Lieberman  wrote:
>     > Any down and dirty tricks for removing the Nylon knuckle joint
>     cup from
>     > the rear radius arm when the hole into which it fits has rusted
>     > internally??
>     I grip the protruding edge of the cup in large pliers or a Mole
>     wrench and
>     twist it. This makes a gap to get a screwdriver down between the
>     cup and
>     hole, and then you can dig the cup out. There's no real substitute
>     for
>     brute force and ignorance!
>     Richard
>     -- 
>     Richard Porter http://www.minijem.plus.com/
>     <http://www.minijem.plus.com/>
>     t: @westernexplorer                 mailto:ricp at minijem.plus.com
>     <mailto:ricp at minijem.plus.com>
>     I don't want a "user experience" - I just want stuff that works.
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