I have not worked on any of my vehicles much over the summer. I did tear down more of the spare barton pump but have not accessed the internal parts yet or started tracking down replacement bearings. If I finish the installing the new wiring harness on my '54 GMC COE this winter I will work on the pump.
I like those old power wagons. We have a few in the garage waiting for restoration.
There has been a power wagon based fire truck for sale in the Pittsburgh area for a few months now. A few years earlier than yours but similar in layout. This fire truck was "homegrown" from an original ambulance body (which is a shame as the orginal ambulance bodies with the spare tire inset and the pointed door frames are getting as hard to find).
Here is the add
1941 Dodge Power Wagon Fire Truck 
