Seiko 5M43A - Oscillating Weight Bridge; Intermediate Wheel for Generating Rotor; Train Wheel Bridge; Setting Position

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TECHNICAL GUIDE
Cal. 5M42A, 5M43A
26 Oscillating weight bridge screw
27 Oscillating weight bridge
• Before tightening the oscillating weight bridge screw,
check that the upper pivot of the generating rotor is
inserted properly.
• Be sure to lubricate the upper and lower pivots of the
generating rotor and intermediate wheel for generating
rotor in the quantity specified in the illustration.
Oscillating weight bridge
Generating rotor
Intermediate wheel for generating rotor
• Be sure to lubricate the ball-bearing of the oscillating
weight bridge as shown in the illustration.
29 Intermediate wheel for generating rotor
• Lubricating
Refer to the illustration at right.
35 Train wheel bridge
• Setting position
Refer to the illustrations below to check where to install the respective wheels.
Center wheel and pinion
Main plate
Third wheel and pinion
Fifth wheel and pinion
Step rotor
Fourth wheel and pinion
Fourth wheel and pinion
Fifth wheel and pinion
Step rotor
Third wheel and pinion
Setting wheel
Minute wheel