Overhaul Fuel Pump

84E24

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Location
Dayton, Ohio
I decided to over haul the fuel pump to see if it would help in starting after a week of setting. In the Blue Books section 13 31 522 describes the procress.

I can see that the pin needs to be removed fro the lower section with the snap ring. But, the book states to Adjust the diaphragm to correct position using assembly gauge 5125.

Does anyone know what this is or what/how to adjust it?

Thanks,

Steve
 
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