1976 KZ900 Rear Oil Seal

I have a 1976 KZ 900 with rear drum brakes. I was looking at the bike the other day and noticed that the rear oil seal on the left hand side of the wheel was not where it was supposed to be. It was out against the swing arm. Does anyone have a good diagram of how the rear wheel with drum brakes is supposed to be assemblied ? I am trying to find out what is wrong that the oil seal is not being held inplace where it should be. Thanks in advance.

I think you can go up to filebase and click on the z1900 manual. I don't know if the rear brakes are the same though. I will say it's not a very definitive manual though.

1976 Kawasaki KZ900 KZ900A

Parts fiche files.... KZ900 fiche files...