Removing the movement from the case.
Clock repairing generally involves
two distinct areas - metalwork and woodwork. Even where the case is made of
metal as in a carriage clock, the processes for the movement and case are still
quite distinct. The first thing to do is to physically separate the movement
from the case. The method of removing a movement varies considerably from one
type of clock to another.
A quick examination will soon show whether the
movement should be extracted complete with the dial and hands or whether the
dial is fixed to the case. In the latter situation, the hands will need to be
removed before the movement can be released. Never dismantle the movement with
the mainsprings wound - they have a lot of energy stored in them and can be
dangerous to you and the clock. Do not undo any part of the movement without
reading the section entitled 'Letting down mainsprings'.
There are three basic methods by which clock hands are retained:-
Pin & Collet
Threaded hand nut
Your Own Clocks