Are you intending to pull the steering clutches or just replace the brake lining ?
If you want just the brake band, remove the adjusting nut. Then wiggle the band to remove the pins. Then rotate the lining and remove the nut off bolts holding the 3 pieces together. Always a flustering process to rotate the lining around the drum. But it does fit. Good to feed a line under the drum to help pull the pieces around on reassemble. Don't forget the set screw under the case to hold the band up, remove it.
Start spraying lube on all the pieces. The pins should be easy. The bracket does not have to come out. Never torch it off, just making more work latter. Heat is fine if needed. Don't forget the anti seize when you put it back together.
If you want the steering clutch read the manual to see how to get a socket on the outside bolts. The inside is box end wrench work. Make sure to keep count of how many bolts you remove so you get all of them. Then use an old sharpened flat screwdriver blade to separate the flanges. Then use the brake band as a sling and lift out. Sometimes easy, sometimes you could swear it will not fit. The more infinite your lift the better. If you work from a loader bucket prop it and use a cable come along or anything better at being infinite, as the lift. A bit awkward to get lined up but cheap cherry picker engine host will work, with anchor to keep it balanced. Not the worst job, 😉 but much faster with a extra set of hands. And much like the Cat manual I probably skipped over some details.🤣