Hello, I am new to the forum. I have a 1993 Dodge W350. The power steering stopped working with out any indication that the there was a problem before the failure. One night it worked flawlessly and the next morning nothing. The fluid is fine and no leaks are visible. I have been unable to find a diagram of the power steering system so I do not understand how this power steering system works with out some disassembly. It is not belt driven but appears to have an internal belt, gear or chain drive system which is all covered up by a thin sheet metal cover which looks like to remove it will take more than just taking out the retaining bolts. Any help would be great. Thanks