Bringing A PAM 091 back to life

So I received this PAM 091 for service a while back, and it was in rough shape. The watch was not running, and the dial had an odd colour to it:

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Here using a Panerai specific die to open the case back:

As soon as I opened the back, the familiar smell of WD40 came from inside the case – not a good sign:

I started the disassembly, noting that there was a lot of “fluid” on the movement parts, which was the WD40:

Having a closer look at the balance area, some serious issues were noted – not only is the watch full of WD40, but there are fibers all over, one leg of the Incabloc spring is not seated, and the most serious is that the balance spring is broken near the stud:

You can also see that there is wear on the automatic bridge, so the condition of the oscillating weight bearing is suspect:

So on with disassembling the watch:

The WD40 seemed to stop on the back side of the date indicator, so this is a good thing as it did not affect the paint on the indicator or seriously damage the dial:

Now completely disassembled:

Ready for the cleaning machine:

Looking at the reversing wheel, it has some serious wear on it – new one on the left compared to the one from this watch, and you can see that the teeth are nearly gone on the old one:

New mainspring installed:

Pegging all the jewels and bushings:

Now assembling the base movement:

New balance complete:

Installed and running now:

Checking timing in 6 positions:

Result looks very good:

Completing the assembly:

Dial and hands installed:

Case is cleaned, and the movement is installed into the case:

Oscillating weight bearing needed replacement:

Checking and oiling the bearing, using the damping test:

Next timing and power reserve checks:

The watch ran great, and is now back with it’s owner:

I’m not quite sure who sprayed the watch with WD40, or who was poking around inside it and damaged the balance spring, but clearly if your watch needs work, these are not things that will help it’s condition any. Anyway, thanks for looking!

Cheers, Al

http://www.archer.watches.ca

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8 Responses to “Bringing A PAM 091 back to life”

  1. Jason Says:

    Great post Al, love reading them, just wish you had them more often

    • archerwatches Says:

      Hi Jason – yes I know the posts are very sparse, but it’s a reflection of how busy I am fixing and making watches. I am going to try to put more up in 2014.

      Cheers, Al

  2. Lawrence Says:

    Thanks for sharing the servicing of the Pan!

    Lawrence

  3. Drew Says:

    Awesome post Al! Always love to see your work.

  4. Daniel Says:

    Amazing work, I imagine it must take a lot of patience and time to do this the right way!

  5. Guest Says:

    Wonderful post. Glad to see this watch saved from the brink.

    Are you planning a post showing your favorite watches that you serviced from last year? That would be interesting!

  6. watch repair shop Says:

    Love the detail and step by step pics are so informative. I think I’m becoming addicted to your blog!

  7. stuart Says:

    This was my Panerai….great job Al……back to wearing it everyday

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