S&W .38 Safety Hammerless 3rd Model Disassembly

[helmsp]

I've a .38 Safety Hammerless 3rd Model, which seems to have a defective firing pin since it doesn't protrute from the frame once the trigger has been pressed.
I'm quite versed when it comes to disassembling newer models but not an old hammerless.
I tried google for a video or step by step tutorial but to no avail.
Do you guys have any infos?