Could anyone help me out?  I have a late Chickering Ampico "B" piano,
with the subdued switch.  I need a tubing diagram as several hoses have
come loose and I don't know where they go.  E.g., at each end of the
stack there are valves that have three nipples; one I know is for bleed
to atmosphere (I don't know which one it is), the other is teed to the
number 6 valve that is attached, two others remain a mystery to me.
The 1929 service manual only shows one picture of the wind-chest spill
units.  Could anyone help?

Thanks
Dan Bixler
littletonflyguy1@aol.com.geentroep [delete ".geentroep" to reply]