I discussed the exploded parts diagram with a parts guy at a Ford truck shop. Interesting, there is no exploded parts diagram for the stripped chassis but there is for the commercial truck. I guess Ford thinks Motorhome people can afford a new unit for over $1,000.00 and truck owners could only afford to have theirs repaired.
After I disassembled the unit I went to a clutch repair shop and bought replacement shoes for $38.00 instead of $180.00 at the Ford parts shop. I went back to the Ford truck garage and bought a new front gasket for $8.00. My total material cost was $46.00. I had already determined that the drum, bearing and seals were OK.