We can say that there are 2 types of repair: small and common. Minor repair means repair of hours without having to completely disassemble the mechanism. It can be a replacement of the crown, bracelet repair or replacement of glass, repair of the dial, replace or repair the springs. A common repair involves the complete disassembly, adjustment, cleaning and lubrication of the mechanism. Typically, common repair is carried out not so often, but at least every 3-5 years, or in the event of a breakdown. If the clock is stopped or not working (off), you first need to determine the cause of failure.
Check the mechanism of the plant and move the arrow. If you twist the crown from himself, should not hear any crackles or noise, there should be slippage. Twisted, now release the head must not go back.
When you turn the crown to himself, you should hear a distinctive sound.
The arrows in the translation should rotate not too easy and not too tight, but just with some effort. If not, then it is necessary to correct the pointer mechanism.
Go ahead. Open the back cover and note the appearance and balance of the clockwork. Consider the stones, they must be clean, no oil. Shop, there are no signs of corrosion. If the watch is not waterproof, when wet, they primarily attack the machinery of the factory and move the arrow.
Remove the balance bridge and through a magnifying glass let us consider the upper and lower axis of the axle, they should be bent, should be flat, shiny, without any traces of scale and corrosion. The turns of the spiral of the balance must lie in the same plane, not in contact, i.e. the helix must be of the correct form. If they are touching each other or touch the rim of the bridge balance, this leads to a significant rush hours (an hour more).