They are usually non repairable, You may want to try to put some light
hydraulic oil in the top of the cylinder, sometimes that will soften the
seals and help them seal. Be careful when you open the door the first couple
of times after you do it as there may be oil spraying from the top of the
cylinder.
If you need to replace them you can use Bimba brand part #1712DP
cylinders, they should be available from a good local industrial supply
house, They are 1.5" bore and 12" stroke with a pivot bottom. You will need
to buy a clevis for the top of the rod. part # d-231-1 and a lock nut for
it. To use these cylinders you must first drive the pivot pin out with a
hammer and punch (not very hard) so you can reuse your original bolt. You
also have to cut one leg of the clevis off so it will fit on the original
bracket, If you need a couple of pictures I can send you some.
On 8/3/06 2:48:45 PM, Sven Koch (sk-svenkoch@gmx.de) wrote:
> Hello all,
>
> after reinstalling the air door cylinder and doing some tests,
> I've realized that air gets throu the inner seals of the cylinders!!
>
> Is it possible to repair the 2 big cylind
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