A 13 ligne manual wind day and date movement with a fast change feature for setting both. It is the Model 104 with the day and date mechanism added, and is thinner than the similar Model 27.
Hand-woundDay & DateV-ConicFast Change
Factory Service Manual · Model 106 · Dial Side & Movement Side
Ligne13
BearingsV-Conic
TypeManual wind day and date
Basic movementModel 104
FeatureFast change, day and date
Dial tabsBent around dial rest and dial plate
ManualService Manual · Model 106
Size (mm)29.45 mm
Height5.00 mm
Jewels0
EscapementPin lever
Beat rate18,000 bph
Power reserve42 h
Size in mm, height, jewels, escapement, beat rate and power reserve: ranfft.org
Not the Model 27
The TIMEX Model 106 is a 13 ligne manual wind day and date movement which contains a fast change feature for setting both the day and the date. It contains “V-conic” balance bearings. The Model 106 is similar to the Model 104 movement with the addition of the day and date mechanism.
Telling it apart: The Model 106 is thinner than the similar Model 27. Its dial tabs are bent around the dial rest and the dial plate, where the Model 27’s are bent around the dial rest only. The dial rest is flush with the dial plate on the 106, with a gap on the 27.
Remove the case back and support ring. This is not always used.
Remove the screw on the set lever, beside the stem, and the set lever, to release the crown and stem assembly.
Pull the crown and stem assembly out of engagement in the movement and the movement assembly can then be lifted out of the case. Some case designs require that the crystal be removed and the movement is then removed through the front of the case.
Straighten the dial tabs so they will pass through the holes. Turn the assembly over and lift off the dial, the day disc, the date ring and the date frame.
Fig. 106.3 · Day & date stack
Reassembly
1 · The Detent Springs
Insert the day detent spring and the date detent spring into the day-date frame as shown.
Lubricate the bearing face of the day detent spring and the date detent spring with a thin film of non-spreading watch oil, Moebius Synt-A-Lube in the factory, where shown.
Caution: Avoid excess lubrication.
Fig. 106.4 · Detent springs
2 · The Cannon Pinion
Apply non-spreading watch oil to the end of the cannon pinion. The vertical wall of the day-date frame is also lubricated with a thin film of non-spreading oil.
Fig. 106.4 · Cannon pinion
3 · The Day Disc
Note the protrusions on the back of the day disc. With fine tweezers, deflect the day detent spring outward and place the day disc on the day-date frame assembly with any day, Sunday for instance, in line with the crown and stem, then drop it into place and release the day detent spring.
Fig. 106.5 · Figure 3
4 · Fitting the Day Disc
The day disc being deflected into place on the day-date frame assembly with fine tweezers.
Position the date ring centrally and deflect the date detent spring until the date ring drops into place. Orient the dial with the windows toward the crown and stem assembly and insert the tabs through the holes of the day-date frame assembly. Hold the dial and day-date frame firmly on the movement, turn the assembly over and bend the tabs securely around the edge of the dial plate.
Fig. 106.5 · Fitting the day disc
Position the date ring centrally and deflect the date detent spring until it drops into place. Orient the dial with the windows toward the crown and stem, insert the tabs through the day-date frame holes, turn the assembly over and bend the tabs securely around the edge of the dial plate.
Checking the Change
1 · The Sequence
Turn the crown so the hands rotate clockwise until first the date and then the day advance and snap into position.
Rotate the hands counterclockwise until the day moves partially out of the window, then snaps back into the window. Rotate the hands clockwise until the day advances again.
Rotate counterclockwise until the hands indicate 9 PM, then clockwise until the date changes with a snap. This change should occur around midnight.
Continue to rotate the hands clockwise through 29 hours and both the day and the date should advance one position.
Then: remove the crown and stem assembly, replace the movement in the case, replacing the crystal if it was removed, and insert the stem through the case into the movement.
This guide is based on the original Timex factory service manual for the Model 106 movement.
