hey gang, i have this diablo pump.....i tried firing it, didnt work that great, so i figure spring issues, right? well...to my horror, the powertube didnt need much pullng to take it out of the retaining nut, even though it should not be able to do such, since its threaded into a cupseal....apparently there is this kink problem with the hammer of it..i am not sure if this is the original hammer, nor am i sure if the bolt is even original to it, but it seems that there is an interference with the raised ring on the powertube and the rear counterbore of the hammer...
ok pics of my pump's internals
the assembly all linked together, showing the rather extreme kink
this is the area where it interferes if i link it before i put it back in
notice how the ring on the powertube is not concentric?
bolt and striker on power tube, not connected
bolt with the brass velocity adjuster
marker itself, a Diablo pump
also, note how theres teflon tape on the threaded part? some of that is actually white delrin....the damned thing actually pulled the powertube thru the retaining nut and stripped the delrin cupseal(Spyder type) it is now a bit too loose to go into any cupseal, including the stock one...my hunch is that this is what is causing the pump to have odd odd firing reports and how it performed today with sometimes lack of velocity, or excessive velocity..no leaks though.