No experts yet? Here are some pictures I took while rebuilding the Warn locking hubs on my old truck a few years ago - took me awhile to find them. They are in no particular order and have no text but they might help you. These were the "Economy" style - the ones that engage and dis-engage with an 1/8 turn. The truck was proably identical to yours.
There might be some duplicates:
One thing I can tell you is - there should definitely be a big spring behind each clutch ring. That is what pushes it out and releases the hub. I just went through the "Premium" style hubs on my Dana 60 and they were basically the same - they just require the full9/10th's of a turn to operate.
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My old truck - boy it was nice:
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