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What you need

This teardown is not a repair guide. To repair your Swiss made stop watch, use our service manual.

  1. Old Swiss Made Telephone Call Timer, Removing the base: step 1, image 1 of 3 Old Swiss Made Telephone Call Timer, Removing the base: step 1, image 2 of 3 Old Swiss Made Telephone Call Timer, Removing the base: step 1, image 3 of 3
    • Carefully rotate the black base anti-clock wise to remove.

  2. Old Swiss Made Telephone Call Timer, Removing the bell: step 2, image 1 of 2 Old Swiss Made Telephone Call Timer, Removing the bell: step 2, image 2 of 2
    • Remove the hex nut by carefully tapping with finger (if tight use pliers to loosen).

    • Then lift the bell off the screw, revealing the first layer of internals.

  3. Old Swiss Made Telephone Call Timer, Removing bell stand and ringer: step 3, image 1 of 3 Old Swiss Made Telephone Call Timer, Removing bell stand and ringer: step 3, image 2 of 3 Old Swiss Made Telephone Call Timer, Removing bell stand and ringer: step 3, image 3 of 3
    • Using a 1.5mm flat head screw driver, remove the 3 centre screws, 2 at the base of the stand that was holding the bell and the one at the base of the bell ringer.

  4. Old Swiss Made Telephone Call Timer, Exposing the internals: step 4, image 1 of 3 Old Swiss Made Telephone Call Timer, Exposing the internals: step 4, image 2 of 3 Old Swiss Made Telephone Call Timer, Exposing the internals: step 4, image 3 of 3
    • Again using the screw driver, remove the three screw located on the side of the exterior metal case.

    • Next by hand or with pliers, rotate both handles/levers protruding from the metal case anti-clock wise to remove.

    • you should be able to remove the case now by sliding it up, be careful when doing so as not to loose internal parts now loose.

    • if the smaller lever is too stubborn to rotate, you should still be able to bend the case over it to remove the metal exterior.

  5. Old Swiss Made Telephone Call Timer, Exposing the next layer of internals: step 5, image 1 of 3 Old Swiss Made Telephone Call Timer, Exposing the next layer of internals: step 5, image 2 of 3 Old Swiss Made Telephone Call Timer, Exposing the next layer of internals: step 5, image 3 of 3
    • next, either with pliers or by hand, remove the three hex nuts on the bottom plate containing the internal mechanisms, by rotating anti-clock wise.

    • Next, pull and rotate the centre piece anti-clock (BE-CAREFUL)removing this piece will likely fully detach the top and bottom of the internals from one another, the internal will be quick to fall apart and may rapidly do so if wound up.

  6. Old Swiss Made Telephone Call Timer, Removing the Centre gear and face: step 6, image 1 of 3 Old Swiss Made Telephone Call Timer, Removing the Centre gear and face: step 6, image 2 of 3 Old Swiss Made Telephone Call Timer, Removing the Centre gear and face: step 6, image 3 of 3
    • To remove the centre gear, you must first remove the timers face and hand, this can be done either by drilling the rivers on top, or using pliers to bend and pull the face off.

    • begin by removing the three rivets near the edge of the face, then either use pliers or by hand, you should pull the face off the last rivet, and the had with it.

    • once you have removed the face and hand, a small metal rod and brass band covering it should remain,(the metal rod is the top of the gear, being held by the brass band) using a thin metal pin and a mallet, you should be able to knock the rod out of the brass band, setting the centre gear free.

  7. Old Swiss Made Telephone Call Timer, Finished: step 7, image 1 of 2 Old Swiss Made Telephone Call Timer, Finished: step 7, image 2 of 2
    • And with that last step, all major components have been stripped.

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Member since: 03/20/24

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