Here a little walkthrough the servicing of my Rolex 5513, calibre 1520. Sorry for the funny english, I'm no native speaker.
I'm not a professional watchmaker, this is only amateur-work.
I start by opening the case, taking off the automatic device and disassemble it.
Now I remove the movement and take off hands and dial.
Removing the cannon pinion.
Now it's time for the balance and the pallet fork.
Continuing disassembling with ratchet and train wheels.
Next one is the barrel bridge.
I decided to use a new mainspring.
Now it's time for the keyless works.
On the other side of the movement the spring for stopping the balance.
Removing the screws for the movement and the dial.
And reassemble the balance for protection reasons.
Ok, everything taken apart, ready for cleaning.
Best regards
Erik