So I rebuilt my parking brake and I am getting a leak on the outside of the drum. I removed the drum and everything is dry on the inside. The backing plate seems to be slightly bent and would not allow the drum to seat all the way down to the proper place. I put a clamp on it and now it seats. I took the big nut off of the spline and see to shims there. The oil is leaking past the spline. The shims don't cover the spline openings. I have some pictures here. Any thoughts?
Lee
Lee