Re: Removal of gland 43240 from top of landing gear cylinder on F-24

[norbymac20@sbcglobal.net]

'I am unable to remove the aforementioned gland. It is aluminum and has two
holes, into which a spanner wrench can be inserted. I have put a lot of
WD40 on it but it will not budge. I added a little heat, from a torch, to
the threaded collar but the heat transferred to the aluminum so fast that I
did not get the result that I had hoped for.
I would appreciate and advice. If I destroyed these glands, does
anyone know if replacements are available? Thanks to all. Lucky Mc Luckie
Coal City IL
norbymac20@sbcglobal.net'

[danMichael]

'Lucky:

> I am unable to remove the aforementioned gland. It is aluminum and
> has two
> holes, into which a spanner wrench can be inserted. I have put a lot
> of
> WD40 on it but it will not budge. I added a little heat, from a
> torch, to
> the threaded collar but the heat transferred to the aluminum so fast
> that I
> did not get the result that I had hoped for.
> I would appreciate and advice. If I destroyed these glands, does
> anyone know if replacements are available?

I was faced by the same problem last year. I was able to loosen the
gland nuts by placing the struts in a soft-jawed vice and tapping the
pin spanner with a hammer. I was nervous about it, but there was no
damage in my case.

I dont know if replacements are available, but they can be machined
from stock. People have made replacements that use bronze bushings and
a modern seal design rather than the original duck-and-rubber nested
packing, which I was not able to locate.

Good luck,

:Dan
:NC81323'

[Tom Mueller]

'Also removed both of mine while the L/G was off. Use just the spanner
wrench head, and peck at the small handle with medium size hammer.
It'll move ever so slowly, but it'll move. Standard right hand thread.
When you put in new packing, or for whatever reason you're taking it
apart, remember not to tighten the gland to tight. The oleo strut,
without the weight of the aircraft on it, should fully extend (bottom
out) with about 23 lbs. pull. That simulates a normal takeoff where
the weight of the wheel and tire fully extend the oleo strut and
hydraulically charge it internally for the shock of the next landing.
Tom
Hanford, Ca'

[ranger440c5]

'As the thermal expansion rate of aluminum is greater than steel, you
may try the opposite.......freeze it with dry ice. The aluminum nut
will outshrink the steel cylinder and loosen. Heating does seem to
make solvents and oils creep better, however, the aluminum
aggressively expands possibly binding and galling the fine threads.
In this case you need a new nut anyhow. This is akin to the oldtime
method of stellite valve seat removal...run a bead of weld around the
seat and the weld shrinks it down while cooling so well that the seat
falls out. Alternate applications of heat/lube then freezing will
cause the 2 dissimilar metals to work against each other with forces
that boggle the mind. After several cycles of such you may find them
movable. We've used liquid Nitrogen successfully for this but
unsure in this case as to the reaction of the internal fluids.
If that fails..... we can tell you a sure fire method requiring a
lathe.

--- In fairchildclub@yahoogroups.com, wrote:
> I am unable to remove the aforementioned gland. It is aluminum and
has two
> holes, into which a spanner wrench can be inserted. I have put a
lot
of
> WD40 on it but it will not budge. I added a little heat, from a
torch, to
> the threaded collar but the heat transferred to the aluminum so
fast
that I
> did not get the result that I had hoped for.
> I would appreciate and advice. If I destroyed these glands,
does
> anyone know if replacements are available? Thanks to all. Lucky
Mc
Luckie
> Coal City IL
>

norbymac20@s...

'

[norbymac20@sbcglobal.net]

'I appreciate the sound advice, regarding removal of the top gland on the
F-24 main gear oleo. I will not get back on this project until next week
but I will try the various methods that were mentioned.. Thanks Lucky Mc
Luckie

----- Original Message -----
From: "ranger440c5"
To:
Sent: Friday, June 10, 2005 9:33 PM
Subject: [fairchildclub] Re: Removal of gland 43240 from top of landing gear
cylinder on F-24


> As the thermal expansion rate of aluminum is greater than steel, you
> may try the opposite.......freeze it with dry ice. The aluminum nut
> will outshrink the steel cylinder and loosen. Heating does seem to
> make solvents and oils creep better, however, the aluminum
> aggressively expands possibly binding and galling the fine threads.
> In this case you need a new nut anyhow. This is akin to the oldtime
> method of stellite valve seat removal...run a bead of weld around the
> seat and the weld shrinks it down while cooling so well that the seat
> falls out. Alternate applications of heat/lube then freezing will
> cause the 2 dissimilar metals to work against each other with forces
> that boggle the mind. After several cycles of such you may find them
> movable. We've used liquid Nitrogen successfully for this but
> unsure in this case as to the reaction of the internal fluids.
> If that fails..... we can tell you a sure fire method requiring a
> lathe.
>
>
>
> --- In fairchildclub@yahoogroups.com, wrote:
>> I am unable to remove the aforementioned gland. It is aluminum and
> has two
>> holes, into which a spanner wrench can be inserted. I have put a
> lot
> of
>> WD40 on it but it will not budge. I added a little heat, from a
> torch, to
>> the threaded collar but the heat transferred to the aluminum so
> fast
> that I
>> did not get the result that I had hoped for.
>> I would appreciate and advice. If I destroyed these glands,
> does
>> anyone know if replacements are available? Thanks to all. Lucky
> Mc
> Luckie
>> Coal City IL
>>
>
> norbymac20@s...
>
>
>
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'