Timex M101 Movement — Service Manual & Teardown

A Calendar on the Model 100

The Timex Model 101 is a 9½ ligne calendar movement with “V-Conic” balance bearings. The Model 101 movement is the same as the Model 100 movement with the addition of the calendar mechanism. The date may be advanced quickly.

Note: The movement underneath is the Model 100 and this manual does not repeat its servicing. For disassembly, cleaning, lubrication and reassembly of the base movement, see the Model 100 guide. The Timex code number on the edge of the dial gives the catalog number, movement number and year of manufacture.

This calibre keeps the older Timex parts numbering rather than the four digit scheme used by the Model 104 and its family. The cannon pinion is 242, the dial 751, the sweep second hand 852/1, the same references used across the Model 80 family.

Timex Model 101, movement — Photo courtesy of ranfft.org

Exploded View

Everything below the numbered parts is the basic Model 100 movement.

Disassembly for Cleaning

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

Lifting Off the Calendar

A

Remove all hands.

B

Straighten the dial tabs so they will pass through the holes and come free of the movement. Turn the assembly over and lift off the dial, the date ring and the date frame assembly.

C

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

D

After the above parts have been removed, the basic movement can be disassembled, cleaned, lubricated and reassembled as outlined for the Model 100 movement.

E

The hour wheel washer, hour wheel assembly, cannon pinion assembly and date frame assembly may be cleaned using standard watch cleaning solutions.

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

The Model 101 dial, date ring and date frame assembly lifted off the movement

Fig. 101.3 · Calendar Stack

Reassembly

The Date Detent Spring

A

Make certain the date detent spring is correctly located in the date frame assembly.

B

Lubricate the bearing faces of the date detent spring with a thin film of non-spreading watch oil, Moebius Synt-A-Lube in the factory. Lubricate the vertical wall of the date frame with a thin film of spreading type watch oil, Woods AAAA in the factory.

Caution: Avoid excess lubrication, and do not lubricate the date wheel area.

Oil points on the date detent spring and the vertical wall of the date frame

Fig. 101.4 · Figure 1, Date Detent Spring

The Cannon Pinion

•

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

Oiling the end of the cannon pinion assembly

Fig. 101.4 · Figure 2, Cannon Pinion

Replace the parts on the movement in this order: cannon pinion assembly, hour wheel assembly, hour wheel washer, then the date frame assembly, oriented as shown on page 101.3 with the bosses seated in the holes.

Dropping In the Date Ring

•

Position the date ring centrally on the date frame assembly. With a fine tweezer, deflect the date detent spring inward until the date ring drops into place.

Deflecting the date detent spring with a tweezer to seat the date ring

Fig. 101.5 · Figure 3, Date Ring

Orient the dial as shown on page 101.3 with the window toward the crown and stem and insert the tabs through the date frame assembly into the dial plate of the movement. Hold the dial in place on the movement, turn the assembly over and bend the tabs firmly against the back of the dial plate.

Pull the crown and stem out and rotate clockwise until the date changes with a snap. Stop turning the crown immediately and assemble the hands at the 12 o’clock position.

Check: the date should change at 12 o’clock.

TheModel 101