Here are a few quick supplements to Jack's good advice:

1. The bar through the knee joint to use for jacking up the plane -- when
I replaced
mine, I used a pipe that wasn't strong enough.  It worked, but it bent.
Try looking
for a solid bar or pipe with very thick side walls with the outside
diameter that
will fit through that opening in the gear knee joint, then keep it for
future work.

2. If the seals leak, your cylinder may be out-of-round.  I've heard
discussions in
which it was recommended to change back to the cup shaped seal since that
will
change shape to conform to out-of-round cylinders. I seem to recall that
you have to
change brake fluid type if you make that change. The cups are available
from Skyport
() as kit SMK 61 for $25.95.  (The cup type seal was used on the older
Coupes up
through serial number 812.)

3. If you haven't replaced them recently, when you do strut maintenance is
a good
time to put in new rubber donuts since you'll have the assembly taken
apart anyway.


Jack Lewis wrote:

> >Would anybody happen to know whether the strut inside the donuts can
make it
> >feel rough when landing?  My tail height is fine, but the plane is just
> >impossible to land smoothly!  My neighbors is amazingly smooth, like
you
> >can't feel it touch, but mine always feels like an impact when I touch
down.
> >All that I can figure is that the struts are bad or the rubber donuts
have
> >somehow turned stiff.
>
> Hey Glen:
>
> Just happened to be checking the AD's on my coupe, one noted your hard
> landing condition.  The AD for the rear spar reenforcement stated that
the
> spar cracked due to hard landings as a result of improper fluid or no
fluid
> in the main gear strut.
>
> I would start your hunt with the main gear strut.  Best way I found to
do a
> quick check: Jack the main off the ground and compress the gear several
> times, by hand.  You should get significate resistance, if you don't
then
> you will need to add fluid.  I would suggest at that point to taking the
> strut off and doing a could cleaning also.  May need to replace the
seals.
> Its not a big job, its a good way to spend half a day.
>
> Jacking the gear up can be a pain.  I put a bar thru the knee joint of
the
> gear and use it to set the jack.  That allows the wheel and the strut to
> move freely.
>
> Good luck.
>
> Jack
>
>
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