What LaneRover said. If the cylinder leaked on the shoes they should be replaced.
You may also need to adjust the brakes. Jack up one side and tighten the adjusters until the wheel is locked. Then back off the adjuster until the wheel spins freely. Then do the other side.
One more thing comes to mind. If you removed the shoes then you removed the springs. The top spring must be attached to the post on the back plate (not the other shoe). Don't ask how I know this.
--David
1959 TR3
1970 Series IIa 88" ("Homer")
My hovercraft is full of eels.