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USEFUL HINTS
1) Although it has been stated in an earlier page that
reassembly for the Model 22 movement should be carried out on
the back frame, it is possible to reverse the procedure for the
Model 23 movement and build the watch on the front frame,
held in a conventional jewelers assembly block.
2) Oiling. When oiling the front frame balance cup, to
facilitate the precise entry of the oil to the bottom of the cup, un
dertake this operation through the balance screw hole before
the balance screw is assembled.
3) A drop of oil applied to the stem wind pinion before
assembly will hold the pinion and its bridges together, thus
facilitating assembly.
USEFUL HINTS
MODEL 29 SELF WINDING ATTACHMENT
1) Examine the action of the rotor on the winding frame,
that the staking is secure and that the rotor is free to make
complete revolutions without interference against winding frame,
movement, winding stem, case spring and case. Check that the
case spring is properly located in the groove of the bezel.
2) Check the freeness of the bell crank lever and the
straight lever on the winding frame assembly; the freeness of the
rollers on these levers when they roll over the eccentric cam
on the rotor and the correct action of the two small clicks against
the winding ratchet wheel.
3) Check the action of the winding ratchet wheel. By each
revolution of the rotor, the winding ratchet wheel should be
moved forward approximately six teeth.
4) Check the action of the mainspring in the barrel, that
the mainspring tail is gripping properly in the lancing of the
sliding tail. The mainspring should have five to six full turns
before the sliding tail starts to revolve in the barrel.
5) Oil all the moving parts of the winding attachment
sparingly.
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