Dismantling a barrel spring

How do you remove the barrel to replace the barrel spring of a watch?

Stage 1

disassembly-barrel-exit-step-1-mechanical-movement-disassembly-unitas-6497
How do you remove the barrel spring and put the other parts to be cleaned?
Step 2
disassembly-barrel-exit-step-2-arming-barrel-exit
Disarming the barrel spring
Step 3
disassembly-barrel-exit-step-3-preventing-the-panel-from-hooking-under-the-wheel-or-anchor
Avoid the pendulum to remain hooked under the wheel or at the anchor
Step 4 dismantling-barrel-raising-step-4-screwing-in-the-bridge-and-removing Unscrew the anchor bridge screws and remove it
Step 5
disassembly-barrel-exit-step-5-remove-screw-and-wheel-bearing
Remove screws and gear bridge
Step 6
disassembly-barrel-exit-step-6-removing-second-and-middle-wheels
Remove the exhaust, second and middle wheels
Step 7 dismantling-barrel-raising-step-7-screwing-and-removing-the-hook Unscrew and remove the ratchet
Step 8
dismantling-the-barrel-spring-step-8-screwing-the-catch-and-removing-the-wire-spring
Unscrew the pawl screw and remove it with the wire spring
Step 9
disassembly-barrel-riser-step-9-screw-and-remove-crown-wheel-and-small-washer-in-centre
Unscrew and remove the crown wheel and small washer in the centre
Step 10 dismantling-barrel-raising-step-10-dial-and-removing-the-wheels-and-the-hat Dial side: remove hour wheel and roadway
Step 11 disassembly-barrel-raising-step-11-movement-screwing-and-removing-barrel-bearing Movement side: unscrew and remove barrel bridge
Step 12 disassembly-barrel-raising-step-12-removing-the-centre-wheel Remove centre wheel
Step 13 disassembly-barrel-exit-step-13-removing-the-barrel Remove the barrel
Step 14 disassembly-barrel-riser-step-14-screw-and-remove-barrel-riser Unscrew and remove the pull spring
Step 15 disassembly-barrel-exit-step-15-remove-links-and-wheel Removing references and timer wheel
Step 16 disassembly-steps-16-tipping-out-with-cabron Remove the toggle spring with a nail punch and remove the spring
Step 17 disassembly-barrel-raising-step-17-removing-weights Remove the rocker
Step 18
disassembly-barrel-raising-step-18-screwing-tip-removal
Unscrew the pull tab and remove it
Step 19 disassembly-steps-19-steps-steps-and-steps-gable-ends Remove the spindle, the sliding gear and the winding gear
Step 20 disassembly-barrel-exit-step-20-screw-with-swing-bar-and-remove-incabloc Screw the cockerel with its pendulum back into place and remove the incabloc
Step 21 disassembly-glass-raising-step-21-dial-withdrawal-incorporation-calendar Dial side remove the incabloc balance wheel
Step 22 disassembly-barrel-exit-step-22-open-barrel-exit-shaft-change-grease-on-wall Open the cylinder, take out the shaft and leave the spring. It is best to replace the spring to avoid problems later.
Step 23 disassembly-retrieval-barrel-washing-parts The watch parts are ready to be washed