Repairing Your Own Clocks
By Mervyn Passmore

© Copyright
Mervyn Passmore 2005

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Copyright notice
Contents
    Introduction
    Which clock to begin on?
    Hand Removal
        Pin and Collet
        Hand nut
        Friction fitting
    Removing the dial
    Letting down mainsprings
    To strip or not to strip?
        Cleaning without stripping down
    Stripping down the movement
    Repairs
        Pivots
        Bushing:
            Choosing cutting broaches
        Re-facing the pallets
        Checking the crutch and yoke
        The Platform Escapement
            Ordering a replacement platform
            Fitting a new platform
        Broken and Missing Pieces
            Broken teeth
            Suspensions.
            Clock chain
            Clock glass
            Mainsprings
            Pendulums
            Gong rods
            Winding keys
    Cleaning the dismantled movement
        Pegging out
        Using an ultrasonic tank
    Lacquering
    Re-assembly
    Lubrication
    Re-assembling and Setting up
    Setting up
        Siting
        Regulation
    Tips, Hints & Helps
        Bluing
        Silver soldering
        Soft soldering
        Dial Silvering
        Splicing 30 hour rope
        Black Marble or slate cases
    Tables
        Broach table
        Train count table

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Which clock to begin on?

The first clock you work on should ideally be one of simple design and relatively low value.

Avoid touching anything of sentimental value as you may end up having to pay for the repair, and try to find one that does not strike. If you must choose a striking clock, leave ones that strike on the quarters alone. Wait until you have assembled an ordinary striking clock and understand their workings thoroughly.

If you want to overhaul a clock of sentimental value, practice on an old one first. These are plentiful in second hand shops, but watch out for broken mainsprings as the impact of breaking can damage teeth on wheels. Check that the clock will wind up fully, and if going to an auction it pays to take a bunch of assorted winding keys or a star key.

Pendulum clocks are easier for the amateur to work on than hairspring models. Check that the movement is complete. Old American and German clocks are good to start on, whilst French ones are very delicate. English clocks are generally too expensive to practice on, except for the mass produced models around in large quantities. Many of these are in 'Napoleon Hat' style cases.



This document is © copyright M&P 2005
© Copyright Meadows & Passmore Ltd and Mervyn Passmore 2005
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