Purchased two JDM 7548’s as parts not working.
Diver # 1 had a pulse but not running found fibres stuck in gear train and old oils and greases gummed up.
After full strip down clean and inspection and movement reassembly its back to life will let it run overnight and check all functions working correctly before recasting with new gaskets.
When cleaning parts on these vintage Seiko’s do not clean the minute track ring as this will remove the white markers. Also be very careful around the coil as a slip with a screwdriver will cut through the coil wire many Seiko quartz watches as suffered this fate only let someone who knows what they are doing change a battery on one of these.
Full assembly to follow.
Watch collector and hobbyist mainly vintage Seiko Divers that include mechanical and quartz and digital LCD and vintage chronographs. Just a watch guy. The Seiko and Pulsar watches that I have posted...