M93R bolt

I have one of the early M93R 17 HMR rifles and the bolt needs a thorough cleaning as it has old congealed oil in it. While I know I could just soak it in parts cleaner to clean it I do not want to completely strip the metal of oils and I do not want to degrease then spray it full of oil again to prevent rust.
SO, can anyone steer me to a pdf or video tutorial on the complete disassembly/reassembly of the 93R bolt? I found a youtube video for the B series, but my bolt seems different as there is no Allen key recess in the end for unscrewing. Minus the Allen key feature does mine come apart the same way?

Much thanks in advance.

I guess it must be safe to assume that no one here has ever disassembled a gen1 M93 bolt.