Timex M107 Movement — Service Manual & Teardown

A Self-Winding 104

The Model 107 movement is a 13 ligne self-wind movement featuring the Timex “V-Conic” bearing system and two plate design. It contains a planetary gear self-winding system, and the routine movement of the wrist of a normally active person is sufficient to keep the watch running without manual winding.

Note: The basic movement is similar to the Model 104 and this manual does not repeat its servicing. See the Model 104 guide for cleaning, lubrication and the base reassembly.

Timex Model 107, movement side — Dial side

Exploded View

Everything below the numbered parts is the basic Model 104 movement.

Model 107 · Exploded View

0032Dial

1004Cannon Pinion Assembly

1011Hour Wheel Assembly

1035Screw

1041Hour Wheel Washer

1163Ratchet Wheel

1171Hour Hand

1172Minute Hand

1184Sweep Second Hand

1185Dial Rest

1190Rotor Plate Assembly

1192Rotor Plate Screw

Disassembly for Cleaning

Getting the movement out of its case first? Case types and dust seals →

1 · Freeing the Rotor Assembly

Remove the case back. Loosen and remove the two rotor plate screws.

Lift the rotor assembly slightly to free the dowels.

Fig. 107.3 · Figure 1

2 · Sliding It Out

The rocker arm fits between the rotor frame and the rotor assembly. Position the rotor weight as shown and slide the assembly along the movement plate, toward the balance wheel, until it is free of the rocker arm, then lift the assembly out of the case.

Caution: Any attempt to lift the weight before it is free of the rocker arm will result in damage to the movement.

The rotor positioned to clear the rocker arm

Fig. 107.3 · Figure 2

3 · Releasing the Crown and Stem

Loosen the set lever screw and raise the lever sufficiently to release the stem, then pull the crown and stem assembly free of the movement and the case.

Note: Some Timex self-wind watches take the movement out only through the back. Check for a retaining ring on the inside of the bezel instead of a flange. Where one is fitted, do not remove the crystal: free the ring from the case groove and take the movement out through the back.

Fig. 107.4 · Figure 3

4 · Out of the Case

Where there is no retaining ring, turn the assembly over and remove the crystal using a crystal remover. The reflector ring and the movement and dial assembly can then be removed through the front of the bezel.

Crystal, reflector ring, movement and bezel

Fig. 107.4 · Figure 4

5 · The Dial Tabs

Remove all hands. Turn the assembly over and bend the four dial tabs sufficiently to free the dial from the dial rest and the movement.

Fig. 107.5 · Figure 5

6 · Off the Dial Rest

Hold the dial in place and turn the assembly over so the dial is up, then lift the dial off the assembly.

Replace the crown and stem assembly in the movement and tighten the set lever screw to assure engagement. Release the mainspring power slowly by holding the crown in the fingers of one hand while the click is held out of engagement with the ratchet wheel, through the hole in the dial rest.

Turn the assembly over, dial rest down, and remove the screw securing the dial rest. Turn the assembly over again and lift off the dial rest and the ratchet wheel.

Remove the hour wheel washer (A), hour wheel assembly (B) and cannon pinion assembly (C) from the movement.

Note: With these parts removed, the basic movement may be replaced with a Timex reconditioned movement.

Dial, dial rest, ratchet wheel and dial plate

Fig. 107.5 · Figure 6

Cleaning

With the above parts removed, the movement of the Model 107 may be cleaned and relubricated as outlined for the Model 104. Other metal parts may be cleaned in the same manner as the movement.

Caution: Extreme care must be exercised in cleaning dials and hands. Solvent type cleaners will often damage the finish on these parts.

Reassembly

1 · Greasing the Rotor Frame

Apply grease, Moebius special lubricant in the factory, to three points on the rotor frame assembly. Apply grease to the rotor cam at surface A, force grease beneath the rotor staff head at B and to the underside of the rotor cam at C.

Fig. 107.6 · Figure A

2 · Oiling the Slip Tail

Assemble the ratchet wheel and dial rest and secure with screws. Rotate the crown until the mainspring and slip tail are positioned as shown, then apply a drop of spreading type oil, Woods AAAA in the factory, in the space between the mainspring and the inside diameter of the barrel, or between the slip tail and the barrel, through the opening in the dial rest.

Rotate the crown so the mainspring and slip tail make two complete revolutions within the barrel to distribute the oil properly. Release the mainspring power slowly, then remove the screw, dial rest and ratchet wheel.

Mainspring and slip tail positioned for oiling

Fig. 107.6 · Figure B

3 · The Main Arbor and Ratchet Wheel

Place spreading type watch oil on the main arbor flat on one side, permitting oil to contact the root of the planet wind pinion teeth. From this point drag the oiler over the top of the planet wind pinion down to the main arbor flat on the opposite side, then apply spreading type oil to the bearing surface between the barrel hub and the movement plate.

Apply non-spreading type oil, Moebius Synt-A-Lube in the factory, to six points on the ratchet wheel and planet pinion assembly.

Oil points on the main arbor and ratchet wheel

Fig. 107.7 · Figures C and D

4 · The Rocker Arm and Winding Ratchet Wheel

Apply non-spreading type oil to four points on the rocker arm assembly and winding ratchet wheel.

Fig. 107.7 · Figure E

5 · The Cannon Pinion

Apply non-spreading watch oil to the end of the cannon pinion.

Replace the parts on the movement in this order: cannon pinion assembly, hour wheel assembly, hour wheel washer, then the ratchet wheel, making sure it is seated and properly engaged with the click and the rocking bar assembly. Orient the dial rest with the slot at the stem and seat the bosses in the holes, hold the assembly together and turn it over so the dial rest is down, then insert and tighten the screw.

Insert the dial tabs through the holes in the dial rest. Hold the dial in position on the movement, turn the assembly over and bend the tabs firmly over the edge of the dial plate. Assemble the hands at the 12 o’clock position.

Position the dial and movement assembly in the bezel, insert the reflector ring and replace the crystal. Insert the crown and stem assembly through the bezel and into the movement and tighten the set lever screw.

Reassemble the rotor assembly by sliding it into the movement under the rocker arm, with the notch in the rotor frame pointing towards the balance assembly, and secure it with the two screws. Position the case back so the crown is to the left when the words are upright, then recheck the watch for proper function.

Fig. 107.8 · Cannon Pinion

Replace the parts in this order: cannon pinion assembly, hour wheel assembly, hour wheel washer, then the ratchet wheel, seated and engaged with the click and rocking bar. Orient the dial rest with the slot at the stem, seat the bosses in the holes, turn the assembly over so the dial rest is down, then insert and tighten the screw.

Insert the dial tabs through the holes in the dial rest, hold the dial in position, turn the assembly over and bend the tabs firmly over the edge of the dial plate. Assemble the hands at 12 o’clock. Fit the movement in the bezel, insert the reflector ring, replace the crystal, then insert the crown and stem and tighten the set lever screw.

Slide the rotor assembly back in under the rocker arm, notch in the rotor frame towards the balance assembly, and secure with the two screws. Position the case back so the crown is to the left when the words are upright, then recheck the watch for proper function.