What is wrong with this Montblanc?

 By: cazalea : April 10th, 2019-12:28
It's not running. The owner dropped it on the bathroom tile floor.

My Stowa shown for comparison.


looks like the stud holder is popped off... [nt]

 By: LS : April 10th, 2019-12:45
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Only 17 minutes elapsed diagnostic time, well done!

 By: cazalea : April 10th, 2019-12:47
You are exactly right. 
Now the harder work begins - to open it up and put it back together, without injuring the balance spring (hopefully).

Ouch. Hope the spiral is not damaged... [nt]

 By: amanico : April 10th, 2019-12:49
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Stowa using MB movement or MB using Stowa movement 😳? [nt]

 By: Raymond_S : April 10th, 2019-13:25
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Both using Unitas Movement 6498

 By: cazalea : April 10th, 2019-13:31
Both mildly decorated; Stowa with swan's neck adjuster

OK, diagnosis over, resuscitation has begun

 By: cazalea : April 10th, 2019-14:48
I've decided to get right to work, as a patient who is handled quickly and carefully has a better chance for survival, don't you think?

I removed the back cover. Notice the blued screw near the word SWISS is mostly undone. The adjusting arm has fallen off and slid mostly under the plate. 

In this photo I have partially-extracted the adjusting arm. The screw is still loose.

The adjusting arm is out of the middle of the movement and waiting for replacement.

OK, this is where it sits, and all three pieces can be gently pressed on. But what is the proper alignment for those 3 items to start with??

Luckily I have a new 6498 in box to compare with. Mine's undecorated, but it's factory fresh so will serve as a guide.

Violá - it is running nicely again. Now observe for a day, adjust, clean up the cover, and close it up. Yes, I checked all the screws and tightened them.


WAIT - oh yes, she brought me a Rolex too ... the very first woman's watch I ever touched. This nice lady went to check out all the facilities at a high-end spa in Dallas where her daughter was recently hired as manager. Massage, facial, dip in the pool ... Oops, she had forgotten to screw down the crown and it filled with water. Here's the photo from 2007 while it was still wet inside.

We had to change the dial because it was stained and corroding. But otherwise the movement was fine. Here it is in 2019 not having been touched but worn every day for the last 12 years. 

She brought it along with her husband's Montblanc just to be checked over. I'm flattered she thought me capable of keeping her watch running happily.

NOTE - this is NOT a business for me, just a hobby. Don't take anything I show you as being approved by the manufacturers smile


You’re so talented. [nt]

 By: jomni1 : April 10th, 2019-17:44
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Mike is a stud by all measures. Watch you tired movements.

 By: Bill : April 10th, 2019-20:56
Wow you really know you stuff

Way above my pay grade.


Here's the final result

 By: cazalea : April 11th, 2019-11:44
With a few annoying obstacles along the way, I pulled the balance cock, replaced the stud holder and adjuster, and reinserted the balance into the movement.

I thought I would try a new iPad-based timing meter, so downloaded the software and ran some tests while I adjusted the watch. This unit used the microphone in an iPhone headset, so I fastened it on securely with some cleaning putty and let it run for an hour or so (of course the back cover is off during adjustment - then replaced for a final check and for the photo).

The iPhone microphone looks like this if you've never noticed before; it's on the little bar that lets you adjust volume on the ear buds:

The mic listens for the tic-toc and the software interprets the results - this is basically how all audio-based timers work.

I'm happy with these results - and will give the watch back to the owner after wearing it for a day or two to confirm them.




 By: cazalea : April 11th, 2019-12:54
Here's the ladies tiny Jubilee watch bracelet and the gunk that came out of it!

This is an interesting app..

 By: LS : April 11th, 2019-16:16
I think I found it in the app store. Is there anything one needs to know to use it? Or does it just work?

It helps to know what the data represents

 By: cazalea : April 11th, 2019-16:25
But if you just want to see how your watch is performing, it just works. You do need a quiet room and you need to have the mic directly over the escapement- so it‘s nice to have a transparent caseback.


Nice use of chewing gum. :):):) [nt]

 By: Thomas_3 : April 12th, 2019-11:07
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