Dennis, your indicators go on the rods, outside the cylinder. There were also tabs inside the door of the pump, on the pipe to the right of the brass pipe in the center. There was a regulator handle clamped around the brass pipe. This handle was used to raise the pipe to the desired gallon quantity and was secured at that point by rotating it into these tabs. The tabs were set of course at gallon increments.
On top of this brass pipe, inside the cylinder, was a cap with tabs for the float. When the pipe was raised, gas was pumped into the cylinder. When the gas reached the upper level, the overflow would return to the underground tank via the brass pipe. The float indicated when the gas was overflowing and when it had reached the maximum level of that purchase. These pumps had two of these floats.
I can email you pictures of the installed pieces if you will give me your address.
[This message has been edited by Morgan (edited 11-21-2001).]