Seiko 6139 Service Manual

Note: The 6139 is a modular movement. The chronograph mechanism is built on top of the timekeeping gear train. Disassembly must proceed from top to bottom.

To keep these legends alive, you need more than a screwdriver and luck. You need the . seiko 6139 service manual

Repair or replace damaged components as necessary. Note: The 6139 is a modular movement

The official Seiko technical manual (often found as a PDF scan of the original green or blue pamphlets) contains the specific order for stacking the chronograph wheels and the exact spec for endshake on the automatic winding bridge. seiko 6139 service manual