Since I did not have any documentation with the purchase of the truck I took some time and charted how the front and mid pumps are integrated together in the pumping system found in link below:

1953 GMC AFA Fire Truck Pumping Diagram

Last edited by vwlfan; 10/28/2009 4:16 AM.
Bob
1953 GMC 450 Fire Truck
1915 Standard Eigth Roadster
1912 EMF Model 30
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