Technical Guide; Date Dial Guard; Pawl Lever With Jewel; Transmission Wheel And Pinion - Seiko 4205B Technical Manual

TECHNICAL GUIDE

•
The explanation here is only for the particular points of the calibres equipped with the day star with dial
disk and date dial.

11 Date dial guard

Set the protruding portion of the day-date corrector finger into the hole of the date dial guard (A
portion).

25 Pawl lever with jewel

If a tip of the pawl lever is on the top of the transmission wheel and pinion, insert something with a
sharpened tip through the hole of the framework for automatic device with ball bearing, and move
the tip of the pawl lever sideways so that the lever and the transmission wheel and pinion properly
engage each other.

26 Transmission wheel and pinion

•
Lubricating
45 Sliding crown wheel spring
When setting the sliding crown wheel spring, check that it engages the teeth of the sliding crown wheel.
Sliding crown wheel spring
Cal. 4205B, 4206B, 4207B, 4208B, 4225A, 4227A
A portion of the date dial guard
Protruding portion of the day-date corrector finger
Pawl lever with jewel
Hole of the framework for automatic device with ball
bearing
Sliding crown wheel
(fixed to the locking seat for idle wheel)
Locking seat for idle wheel
7