power steering not working after swap?

[jmdemon55]

i swapped out my manual box for a 70 power box. found a pump from what is supposed to be from a 71? got everything hooked up but still no power steering? got the pump used from ebay as well as the box used from ebay. 2 different purchases. the pressure hose has the "larger" threaded fitting into the box correct? kinda stumped why its not working. thinking maybe the pump is no good? has anyone ever heard of the gearbox being bad as far getting power? i filled the resevoir and with the wheels jacked up turned it slowly lock to lock and the fluid went down. refilled to proper level but still nothin. the hose doesnt surge no "noise" when you hold it against the lock? pulled the hoses and drained the fluid, it was very dirty for being just filled with new fluid, blew thru the lines and the box nothing seems plugged up. hooked it all back up refilled and turned lock to lock still the same. any suggestions? thanks, Jay