Omega 1310 - Motor, Consumption & Functioning Limits; Component Checks & Adjustment Procedures

1973
Cal. 1310
23
3. MOTOR COIL RESISTANCE : approximately
2,2 k
Out of tolerance : exchange motor module (1310-9200)
4. CONSUMPTION OF WHOLE WATCH
Limits : maximum 15 µA with bi-polar
circuit (straight connections)
maximum 7.5 µA C-Mos circuit (T-shaped
connections)
Above accepted limit : slide insulator blade between
motorcontacts, detect and replace definitive module.
(Limit for motor only 3 µA)
5. FUNCTIONING LIMITS (WHOLE WATCH)
Lower limit : 1.20 V upper limit : 1.40 V
Beyond accepted limits :
Check
a) position and tension of retaining click
b) backlash of motor screw and second wheel (see pt. 9)
c) endshake and freedom of rotor
d) cleanliness of motor worm-gear
6. FUNCTIONING LIMITS MOTOR MODULE
WITHOUT WHEEL TRAIN
Lower limit 1.15 V upper limit : 1.45 V
Beyond accepted limits : exchange motor module
(1310-9200)
7. WHEEL TRAIN AND CALENDAR
CHECKING
Motor module removed. Make wheels spin by means
of a dust blower - they must spin freely and make the
date change with only small force from dust blower.
8. CHECK OF PARTS : CONDITION,
CLEANLINESS
Change defective parts, clean movement if necessary
(see technical guide 4.4.1.0)
9. ADJUSTEMENT
To insure a perfect backlash between the second
wheel and the motor worm gear, proceed with
operations 3.36 to 3.38 of the technical guide 3-1310
and check thereafter the following procedure .