1973
Cal. 1310
2
REPLACEMENT OF POWER CELL 
1.1. Open the case.
1.2. Remove and clean the back. 
1.3. Remove magnetic protection.
1.4.  Remove power cell bridle No. 1310.9179 by 
unscrewing its screw.
1.5.  Remove by suction any possible metal waste 
caused by the screw of the power cell bridle.
1.6.  Remove faulty power cell by turning the 
watch over.
1.7.  Check cleanliness of the two power cell 
contacts. If necessary, clean them. If the contacts 
are oxidized, it is necessary in the case of :
the power cell bridle (positive pole): to replace the 
bridle No 1310.9179.
the lower power cell contact (negative pole): to 
clean carefully the bridle by means of a buff.
1.8. Check new power cell. Even if minute 
leakages are apparent, it should not be used. Place 
power cell No 9903 in position, positive pole (+) 
uppermost (fig. 3.1).
1.9. Refit power cell bridle and screw thoroughly.
1.10. Fit magnetic protection.
1.11.  Grease water-resistance gasket. Close the 
case.
COMPONENTS
No 1310.9179. Power cell bridle, with screw 
fitted.
No 9903. Power cell, tension 1.35 V.
Fig. 3.1