Thanks Youngpup/BigDav
Remove Planetary/Roller Gear Train and Shaft
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Remove Output shaft lock ring using special lock ring pliers. Tight and hard.
Remove 5 pinion (4l65e) planetary forward gear set.
Remove Ring gear hub and reassable on top of 5 pinion forward planetary on bench with bearings.
Remove Sunshell.
Remove large Centre Support/Roller clutch housing snap ring. Remove Rear 5 pinion planetary sun gear.
Remove Shaft
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Small tap of shaft from behind witll push low/reverse clutch housing/center support forward and case silencer will fall to bottom.
You can now remove shaft from back. I found I had to pull from front and then bang it again to seperate from roller clutch housing.
Remove rear planet carrier and thrust bearing.
Remove reverse clutch pack - think it was 5 clutches and 5 steels and 1 wavy ring.
Remove output ring gear and thrust bearing and case silencer ring.
Lay all out in order on table.
This is it - ready for reassembly (unless you are replacing the low reverse piston which requires a compression tool).
pics
Shaft I pulled forward with the roller clutch housing hgub and banged again to seperate. typically could take out direct from back.