Montres Allison Rate Tolerances

Montres Allison Date Setting Recommendations

Detailed information is provided below. However, it is extremely important to remember that you should never use the fast-forward mechanism between 8 pm and 3 am. The hands must never be turned back beyond midnight. During this time, the switching mechanism in the calendar mechanism is active and turning the hands back could damage the movement.

For most Montres Allison timepieces, we recommend the following procedure:

1. Pull out the crown to the hand-setting position as described in the instructions for use and turn the hands forward until the calendar switches to the next day. In the case of a watch that has stopped, it is not possible to tell whether time shown is before or after noon unless the timepiece is equipped with any variation of an a.m./p.m. indicator. However, you can identify midnight position by watching when the calendar moves forward.

2. Turn the hands at least six hours after midnight. Using the calendar's fast-forward mechanism, set the watch to yesterday's date. The calendar in a watch normally switches between 8 pm and 3 am. During this time, turning the hands back can damage the movement. By setting the watch to 6 am, you can be certain that the watch is not in the switching phase.

Once you have set the calendar to yesterday's date, you can proceed as follows:

3. Push the crown back into the normal position to start the movement and then pull it out to the hand-setting position again when the seconds hand reaches 12 o'clock. This allows you to use a time signal to set the watch exact to the second.

4. Now advance the hands until the calendar moves to the current date. Continue to turn the hands until the hands are about 5 minutes ahead of the actual time. If the time is after noon, please ensure that you have moved the hour hand past the 12 noon position. This is because the time at which the calendar switches gives you another way of checking whether your watch is showing a time before or after noon.

In addition, you now have a way of setting times between 12.30 and 3 am without damaging the calendar mechanism.

5. Now turn the hands back until the time shown is one minute ahead of the actual time. Once the time shown by the watch is the actual time, press the crown to restart the watch (turn the crown to tighten it if your watch has a screw-in crown). Setting the watch back takes out the play between the cogs in the going train. There is always a certain amount of play in the toothing between two wheels that intermesh: this allows the wheels to move freely and prevents them from jamming.

When the watch is running normally, the fact that the dial train moves forward evenly in the same direction means that the play is not noticeable. However, if you pull out the crown of your watch to the hand-setting position and turn the crown in both directions when setting the hands, you will notice this play in the train each time you change the direction in which you turn the crown. Furthermore, when you pull out or push in the crown, another wheel meshes with the wheels in the dial train. In the case of a watch set to "forward", this can cause the minute hand to make a little jump when you push in the crown.

Now your watch should be running smoothly, showing the correct time and date.

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