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Discussion Starter #1
Greeting SCWF members,

I had been lurking here for awhile ever since I acquired an interest for vintage Seiko's. I started out with a SKX399 from watchcooking which i promptly returned due to bad timekeeping and smudges on the dial, the 2nd acquisition was a minty SKX009, got another SKX399 on the way from the Philippines as well, while my latest acquisition was a 6138-8060 chrono that I got for cheap from a local trading site.

Initial impressions were positive as they usually are when you get a new toy, but once the novelty wore thin, I began to nitpick. And boy didn't I realise there was a long journey ahead of me before this watch could be restored to its former glory.

I hope this thread will serve as a project log to document my progress as I dig deeper.

Attached is a pic of it when I initially received it.
 

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Discussion Starter #3
Caseback removed. Movement looks clean, slight pitting on case. Apologies on the low-res image, but you would notice a black ring that resembles a gasket surrounding the case ring.

At the time it didn't hit me, but after I had difficulty removing the movement from the case, I did further research and found out that there was supposed to be a case spring, which the previous owner or watchmaker probably lost and replaced with a gasket, which had dried up over the years and locked the movement in place!:eek:hmy:
 

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Discussion Starter #4
After slowly hacking away the dried up gasket with primitive tools involving a needle and a compass set, the case ring, movement and pushers came right out, and was I in for a surprise:

1. broken pusher spring, the other was half-rusted
2. bent pushers
3. No o-ring on crown

The black pieces are the aftermath of my battle with said gasket. I have since ordered an aftermarket set of pushers, spring and crown. And fellow forumer daveeb has offered to send me a case spring prototype to see if it fits my case!
 

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Discussion Starter #5
I notice quite abit of freeplay of the autoweight as seen in this side-by-side image. Sometimes the autoweight grinds on the movement the the watch is faced downwards.

AND at a certain angle, the movement seems to grind to a halt, which I have to gently nudge, shake or tap it to make it run again... any ideas?
 

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Sounds like a worn bearing on the autowind is causing the freeplay, so you should check/replace that. 90% of the time when I have had a watch quit based on position it is in the balance. Check for worn pivots or dry jewels in there. Sometimes a thorough lubing will get them going again :)

I discovered quite early on that many movements would not want to run when laid face-up on a table, unless I replaced the balance or jewels. As I started to learn a little bit more I was able to determine when said parts were worn out. I came to the realization that people take off their watches and put them face up on a table at night. After many years of doing this it slowly grinds away the lower jewel and pivot. Needless to say mine always sit on their side when (if) I take them off, and nothing is left running for more than a day when stored.
 

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Discussion Starter #7
Sounds like a worn bearing on the autowind is causing the freeplay, so you should check/replace that. 90% of the time when I have had a watch quit based on position it is in the balance. Check for worn pivots or dry jewels in there. Sometimes a thorough lubing will get them going again :)

I discovered quite early on that many movements would not want to run when laid face-up on a table, unless I replaced the balance or jewels. As I started to learn a little bit more I was able to determine when said parts were worn out. I came to the realization that people take off their watches and put them face up on a table at night. After many years of doing this it slowly grinds away the lower jewel and pivot. Needless to say mine always sit on their side when (if) I take them off, and nothing is left running for more than a day when stored.
Thanks for the elaborate reply. Definitely pointers to keep in mind! I'll try to rest my watches on their sides from now on.

Some updates on my watch so far:
1. Ordered AM pushers and crown from mountapo merchant via eBay after reconfirming that they fit my model and were an exact fit. They are not! Dimensions are off and now they stick out the sides of the case like 2 sore thumbs! Will post pics later.

2. Did some searching on what would cause a hairspring to stick. Some posts suggested demagnetising the watch.I did get a compass but placing the movement beside it did not affect the compass. But i tried to demagnetise it anyway by placing movement on top of CRT monitor and degaussing a few times. Surprisingly movement has been ticking non-stop on my wrist. Hoping this solves it.

3. Managed to get the crystal popped out with the help of a butter knife wrapped in a cloth. Will refinish the case later.
 

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As promised, pushers ordered from mountapo merchant do not fit the 6138-8030.

Jutting too far out, caps not long enough



Side by side comparison vs the original


I'm pressing for a refund but the seller is being persistent.
 

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Repolishing the case

Here are some before and after pics of my attempt at restoring the original finishings to the case.

Before:




After:




I polished the case by hand with various grits of sandpaper from 400 all the way to 2000. For the mirror finish I used a drill and buffing wheel with autosol after the 2000 grit.
 

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Great thread! Looking to do something similar with a 6138 or 6139. Are original pushers difficult to source? Clearly AM pushers aren't the way to go for these watches.
 
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