Thats exactly how my 4506 comes apart.
The spring is a serious @$$kicker, and that spring guide rod will put a hurting on any eyeballss that happen to be within its trajectory should it happen to be slipped off inadvertantly during disassembly/reassembly, so be aware. It is very easy to accidentally knock it out of the notch and then *WHEEEEEEET*-*THUNK* it goes flying.
Depressing the levers, as was said, sucks for those with fat fingers. I have skinny fingers and it sucks only slightly less. Use a brass tool to push them down...the one whose name I forget, but it looks like a brass flatheaded screwdriver. Or, heck, just use a flatheaded screwdriver. Just be careful not to damage them.
Be aware, your gun might be different from mine. But I gather all S&W autos break down pretty much the same way. YMMV.
Mike
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"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert Heinlein