Ampico A Motor Switch
By Bob and Sonja Lemon
There are many things that can influence the motor switch pneumatic.
1. If you have a grand, the paper must cover and seal the control port in the take-up spool.
2. The left hand spool chuck must have a good seal to the take-up spool.
3. All the control tubing must be air tight.
4. The repeat switch mating surfaces must be absolutely flat and have a light film of lubricant to prevent leakage.
5. The slide valve on the transmission must operate properly and seal tightly.
6. The bleed port in the motor control pneumatic assembly must be open.
On some grands there is also a "T" in the line, between the transmission valve and the cutoff block, that has a built-in bleed. Make sure it is there, and clear and properly connected.
I hope this helps in your trouble-shooting efforts.
Bob Lemon
Lemon's Player Piano Service
Sacramento, CA |
(Message sent Thu 13 Feb 1997, 01:47:02 GMT, from time zone GMT-0800.) |
|
|
Mechanical
Music Digest™ Archives
