Pa-28-151 struts
Jay, I live in England and this winter is turning out to be quite warmish.
So it's not the cold this time. In fact, she started sticking last summer.
But as mentioned, by jiggling it before taxying, or just turning around bend
on the way to the active, she would unstick. It wasn't a real problem until
just before Xmas. As I was getting in, a friend jumped on. We are both
biggish and I felt that strut give way. It sunk more than normal.
The inspection has revealed that it practically lost all its nitrogen. And
now there is a tiny leak.
A friend of mine, an engineer for the UK PFA, something like your EAA, had a
look and reckons the o-rings have "gone". He suggests changing them and the
valve (!?). Hence, I will take it to my engineer but wanted to read more
about the thing.
Ahhhh. Now that you mention that one has gone flat, that puts a
different complexion on the discussion.
A common technique to extend the life of a leaking seal that really does
work is Granville Strut Seal. It is a bit of a chore to get the stuff
into the struts, but most report that it does work well and can extend
the life of leaking/sticking seals by several years. I actually used it
to seal up a NEW nose strut seal job.
It is relatively inexpensive, but then again so are a new set of seals
and labor. And yes, it is recommended that the valve cores are replaced,
if not the valve bodies too.
Good Luck,
Mike
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