Project Restoration/Build - 1971 Seiko 6117-6419 GMT Navigator - Seiko & Citizen Watch Forum Japanese Watch Reviews, Discussion & Trading
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Old 04-04-2019, 01:48 PM   #1 (permalink)
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Default Project Restoration/Build - 1971 Seiko 6117-6419 GMT Navigator

With my 7017-6010 Speed Timer project on hold for the moment waiting on a jewel fix for the center wheel bridge, I wanted to show my most recent purchase and project 6117-6419 GMT Navigator. Dial and hands look excellent. Case and crystal are in excellent shape and will need minor work. I plan a full tear down of the movement for service, lubrication, and adjustment. Watch is running and keeping good time.

If anybody has any information on how the GMT hand works on cal 6117, I would appreciate some insight. Can the GMT hand be adjusted for a different time zone or is it fixed?
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File Type: jpg IMG_0080.jpg (263.6 KB, 17 views)
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Old 04-04-2019, 02:22 PM   #2 (permalink)
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Nice watch, the GMT hand is fixed you have to rotate the inner bezel I believe.
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Old 04-04-2019, 04:33 PM   #3 (permalink)
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I've bought a couple of the aftermarket bracelets for these. They're very good and worth getting if you want a bracelet on it. The GMT hand can't be adjusted independently of the time hands.



Very nice movement.
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Old 04-04-2019, 06:54 PM   #4 (permalink)
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Figured out the GMT hand measures 24 hour time. Rotate the bezel to set alternate time zone if you wish but you will have to read in 24 hour time. Still pretty slick though. I have ordered one of Uncle Seiko's railroad bracelets for the 6117. Should be a nice pairing when I am done. I think I am going to keep this one in my collection.
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Old 04-05-2019, 06:05 PM   #5 (permalink)
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Case refinishing work complete.
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File Type: jpg IMG_0085.jpg (229.5 KB, 17 views)
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Old 04-05-2019, 06:22 PM   #6 (permalink)
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These come in both water resistant and water proof. Great movements to work on and have definitely become more collectable recently. That big cushion case has nice modern proportions.
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Old 04-05-2019, 07:48 PM   #7 (permalink)
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Quote:
Originally Posted by IMeasure View Post
These come in both water resistant and water proof. Great movements to work on and have definitely become more collectable recently. That big cushion case has nice modern proportions.
This one is 70m Water Resist, but I would not dare put this watch under running water. There is no gasket seal under the crystal, just pressure fit. Literally snaps in place. I wondered if my watch was missing a crystal gasket, but the watch appeared to never have been serviced. I purchased a new set of gaskets from VTA and they only provide a case back seal and a crown seal so I suspect no crystal gasket is correct. Surprised me.
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Old 04-05-2019, 08:45 PM   #8 (permalink)
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Quote:
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Case refinishing work complete.





Looks great
The nice thing about these is they are easy to buff without having to do brush finished areas.
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Old 04-05-2019, 11:47 PM   #9 (permalink)
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Quote:
Originally Posted by Vette Enthusiast View Post
This one is 70m Water Resist, but I would not dare put this watch under running water. There is no gasket seal under the crystal, just pressure fit. Literally snaps in place. I wondered if my watch was missing a crystal gasket, but the watch appeared to never have been serviced. I purchased a new set of gaskets from VTA and they only provide a case back seal and a crown seal so I suspect no crystal gasket is correct. Surprised me.

No crystal gasket. The friction fit and the tension ring inside the crystal sealed them quite well.
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Old 04-07-2019, 03:08 PM   #10 (permalink)
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Finished up the Navigator Timer this afternoon. Very please with the results. I will post some numbers tomorrow after the watch runs in a bit. Initial numbers look like they are in the 230s on amplitude. I hope these improve overnight. Believe it or not, the keyless works gave me the biggest fit. I only had a parts list for cal 6117 so I had to go by memory on the re-assembly. There is a small spring in the keyless works and it has to be oriented just right. I also had the setting leaver in backwards initially so the clutch barrel was not engaging the gears on the calendar side. I must have taken that part of the watch apart and re-assembled it half a dozen times before I got it right. Such a relief to finally get it all working and back together. Thanks for looking.
Attached Images
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Old 04-07-2019, 03:50 PM   #11 (permalink)
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Great job. I got very close to buying one recently but the seller would not move on price, method of payment or posting. I may keep an eye out for another.
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Old 04-07-2019, 06:17 PM   #12 (permalink)
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Took it on a long walk with my dog this afternoon. Finally, a wrist shot and some numbers. First set are dial up just after a winding spike. The second is after running dial up for several minutes. Really pleased with how this project turned out.
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Old 04-08-2019, 06:02 AM   #13 (permalink)
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Quote:
Originally Posted by Vette Enthusiast View Post
Took it on a long walk with my dog this afternoon. Finally, a wrist shot and some numbers. First set are dial up just after a winding spike. The second is after running dial up for several minutes. Really pleased with how this project turned out.





That's really good
I only time watches in two positions (that they're in 93.2% of the time) - dial up and crown down. The average between them is good enough (not for the pedants of course....)
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Old 04-08-2019, 01:22 PM   #14 (permalink)
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That's really good
I only time watches in two positions (that they're in 93.2% of the time) - dial up and crown down. The average between them is good enough (not for the pedants of course....)
I hear what you are saying Paul. I usually look at numbers in 4 positions. Dial down, dial up, crown down, and crown at at 9 or parallel to the ground. It is always a balance with these older timepieces. Gaining in one position may yield losing in another position. I do not think one can expect modern Rolex or Omega chronometer levels of accuracy with these vintage watches. It is simply unrealistic. I am pretty happy if i can get my watches dialed in to +5 to + 15 per day.
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Old 09-22-2019, 07:54 AM   #15 (permalink)
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Thought I would resurrect one of my earliest watches restorations, 71 Seiko 6117-6419 GMT Navigator Timer. Watch as Mark Lovick, The Watch Repair Channel, does a restoration on one of these early 70s Seiko Navigator Timers. Very cool.

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