This 1955 Longines 9LT Tank dress watch made me want to quit watch repair. Please join me for a complete servicing and cosmetic overhaul as I share my story…
This was one of my most difficult wristwatch revivals, and it took me almost 3 years to complete. In this video I show a complete disassembly, cleaning and reassembly of the movement, restore the case and crystal, and show you in detail the many problems I encountered (or created) and how I solved them.
Do you have a watch project that has gotten the better of you? I’d love to hear your story in the comments below.
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Index:
0:00 Introduction
4:09 Longines 9LT watch restoration – first look
4:55 Inspection
7:37 Disassembling the train wheels
9:53 Disassembling the keyless works
11:30 Removing the barrel bridge
12:42 Mainspring barrel disassembly
13:40 Pre-cleaning the watch parts
14:38 Ultrasonic parts cleaning – 3 jar method
15:40 Mainplate reassembly
17:04 Crown wheel assembly
17:34 New mainspring installation
21:01 Mainspring barrel installation
22:32 Keyless works installation
24:11 Train wheels & mainspring installation
25:48 Pallet fork installation
26:47 Reinstalling the balance wheel
27:30 Balance jewels
28:15 First timegrapher reading & regulation
29:26 Disassembling the balance
32:15 Replacing the regulator
33:49 Hairspring woes
36:51 Watch polishing/detailing
38:22 Restoring the acrylic crystal
39:43 Installing the crystal with UV glue
41:12 Restoring the watch crown
43:00 Installing the hands & recasing the movement
44:57 Final results!
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