Hi All,  It was brought to my attention that I gave out some incorrect
information in my posting about the Lauter-Humana air motor.  I said
that the old Aeolian air motor had two rods which were used to compress
the gaskets between the three sections.  That was incorrect (a 'senior
moment').  Actually, there are four screws that do the job.  Two screws
on each side are used to secure the outer sections to the center
section.

Also, I believe that the air motor with the two long rods is the
Amphion air motor.  It has eight cork gaskets.  There are two cork
gaskets, with a piece of hardwood sandwiched between the pieces of
cork, that are placed between each of the five sections of the motor.

The two rods pass through the entire assembly and between the end
sections and the fastening nuts there is a leaf-type spring which helps
insure that an equal amount of tension is applied to the gaskets.  The
springs also help to keep the motor 'square' by giving the technician
a visual reference as the nuts are tightened.

And, while I'm on the topic of that air motor, I also seal that vacuum
supply channel after replacing the gaskets...

Musically,
John A Tuttle
Player-Care.com
Brick, New Jersey, USA