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WURLITZER CALIOLA RESTORATION (Part 3)
MORE DISASSEMBLY OF THE CALIOLA


by Dr. Bill Black

In PHOTO A we have removed the gear box, pulley and back board. Since the roll frame has the original metal tubing, in order to remove the frame you have to remove the speed control to allow disconnecting the wooden tracker bar block from the roll frame. The metal tubing is attached to the wooden tracker bar block and is inflexible. So, to remove the roll frame it is necessary to disconnect the wooden tracker bar block from the frame so the frame can be slid toward the back of the machine. The problem is that you can not slide the metal mounting rods for the bar out of the roll frame as there is no clearance to the left because they hit the side of the case and no room to the right because the speed control interferes. So, by removing the speed control first there is enough room to slide the rods out in that direction. A popular in the field solution is to drill two holes in the side of the case so the rods can slide out through the side of the case. Not nice for the case however.


In PHOTO B the roll frame has been removed. The mechanism to the right of the frame is the valve assembly to operate the rewind mode for the frame. There is a slider type valve behind that which serves to operate a transfer block which mutes the music roll when you want to play the Caliola from the key board. This has been put out of operation by removal of the link to the speed control. This is missing but I assume that when the speed control is put in neutral, a rod connection operates this unit. More on this later.


PHOTO C shows the wooden block for the tracker bar suspended by the metal tubing.


Wurlitzer liked to advertise that the pressure pump for their band organs was easily removable for replacement. This was made possible by having a mounting cleat on the side of the case to hold the pump down and a separate cleat to mount the wind chest. For some reason the Caliola uses the same cleat for the pump and the wind chest. So, if you remove the cleat to get the pump out, the main support for the windchest on that side is gone. There is little clearance for the windchest on each side of the case so I guess the windchest could only try to drop down a small amount before it hangs up on the case. However, it might be hard to lift the windchest and pipework back up to get the cleat back in place when replacing the pump.

PHOTO D shows this cleat which holds down the pump and supports the windchest. I asked some fellow Caliola owners to examine their machines. Their machines also have this arrangement so I assume this is the original configuration.


IN PHOTO E the back rank of pipes have been removed showing the screw which holds the windchest onto the cleat.


Dr. Bill Black is one of the nation's most knowledgeble Wurlitzer band organ experts. He has made recordings of many band organs and other mechanical music machines which are available for purchase in our Gift Shop .

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