440 gas crawler steering brake pad

[logger]

Hello, I have a 440 gas crawler w/ straight blade, about the width of machine, which is idea for building woods roads on our tree farm. Has all the power I need to do this work and is light enough to cause little harm to the stand. I need to replace the steering brake pad left side , my manual shows the how but not how thick the pad is nor any part numbers, so I'm looking for two things today the part numbers for pads and rivets and also a source to buy these parts from? I glad to have found this site and it appears to be many hours of reading past posts. Old tractor and machinery for me are like old guns I like them and I want to use them. I suspect that this old crawler will be working here long after I'm gone. Thanks in advance.
Logger