I've determined I need to go through the wheels cylinder on the front and I am having a hard time figuring out how I get it apart.

On a 39 1.5 ton
I removed the 5 lug nuts and the wheel, this left me with what looked like a spacer with six lug nuts holding it to the brake drum. I removed the 6 lug nuts. I could not get the spacer off by tapping it with a hammer. I thought maybe there was a spindle nut cover in the center of the spacer, but it wouldn't come off with a tap either.

My 47-54 shop manual does not seem to apply. any help is appreciated.

Thanks,
Chris