There are at least four critical adjustments between the Play/ReRoll
lever and the transmission. Since there are 50+ player systems,
there are also 50+ different sets of adjustments.
In general, three things must happen when switching from ReRoll to
1) The sliding pinion gear in the trasmission must come in contact
with the main drive gear, which is attached to the take-up spool.
2) The Cut-Out valve must be deactivated (this might be tricky).
Since there are two basic ways in which this can be accomplished
depending on the type of mechanism (pneumatic or mechanical),
anything I might say could be misleading. However, the function
of the cut-off valve is to open and close the air channel leading
from the lower section to the upper section. The main vacuum supply
tube is typically on the left side of the lower section and passes
through the keybed. There is typically a control box where the large
supply tube is attached. By opening that box, you can see the valve
and watch it's operation as you shift positions. Make sure the
valve covers the hole leading to the upper section when the unit
is in ReRoll, and opens the hole 100% when in Play.
3) The Fast Reroll Port must be open in ReRoll and closed when
in Play. The control box containing the port and valve is
typically on the far right of the lower section. Here again,
opening the control box will expose the valve. Don't be alarmed
when you see two sliding valves in the control box. One is for
the Tempo control, the other is the Fast ReRoll Valve. Moving
each lever will identify which one is which. Insure that the
valve closes the vacuum port leading to the air motor when the
unit is in the Play position.
Sometimes, the activating lever inside of the transmission
can slip out of the groove in the sliding pinion gear. This
sometimes happens if the Play/ReRoll lever is activated too
forcefully or too quickly, but if that is the case, then the
transmission is in need of some service.
If your unit uses pneumatic valves instead of mechanical sliding
valves, the information above will be of little use in correcting
the problem. However, the principals of operation are identical
in both systems.
In a nut shell, the vacuum hose leading to the upper section or
windchest (stack) must be turned off during ReRoll and open during
Play. The fast-reroll valve must be closed during Play. The pinion
gear must be in full contact with the main drive gear, which is
connected to the take-up spool when the unit is in Play.
Hope this helps.
John A. Tuttle
At 12:03 AM 6/23/99 -0500, you wrote:
> John, A friend of mine has a player piano that is electrified, his
>grandson has done something to it . The piano goes forward in the re-roll
>mode.I can not get it to change from re-roll to play, it is jammed. I
>think if you tell me what to do I can fix it, or if you know where I can
>get the info on how to fix it, I would love to see his piano playing again
>as I know he misses it very much. Thank you for your time. Pam