Thanks Ron and Matt. I have taken the nuts off the to cotter pins already and I have tried to hammer them out. One of the pins seems like it is almost out but is still lodged... what type of wrench would latch onto it to pull it out? I've tried pliers and an adjustable allen wrench.
For the other pin there is an added problem, when I unscrewed the nut, part of the pin broke off with it. So the pin isn't long enough to really hammer out in the first place. What do you recommend for this?
I appreciate everyone's help. Hopefully we'll get this problem solved soon.