VBR88
Your Komatsu has a master pin linkage, I have not heard of a master link for them. This does not mean that they don't exist, I have not seen or worked on them. On the outside edge of your chain, there will be one pin with a dimple in it,this is the master pin. This is the pin you will have to drive out to break the chain. Call your local Komatsu dealer and ask the service desk on how to break the chain on a Komatsu dozer. They will confirm what I have been telling you.
Eddie Walker, I have not worked on a Case dozer, so I am not familiar with the system you describe. It does sound easier to break a track this way rather than the master pin system. Komatsu, Cat, Dresser and some others use the master pin to connect/disconnect the tracks.