Watch repairs

Cauny small dress watch with sub-seconds

Non-runner, balance OK, stem very difficult to remove, rolled gold bracelet, broken mainspring, movement FHF 63.

  • [x] Remove from case -- pop the front
  • [x] Clean dial -- didn't make much difference
  • [x] Check if it runs by turning barrel
  • [x] Order donor movement
  • [ ] Replace mainspring (swap from donor)
  • [ ] Service

Omega 131.019 (steel)

22M serial (1965), cal 601 non-runner, arrived in a case for an automatic, has some homemade case clamps.

  • [x] Buy correct NOS case for movement
  • [x] New mainspring
  • [x] Order new 30.8mm crystal
  • [x] Fit new crystal
  • [x] Ultrasonic clean of keyless works
  • [x] Trial fit brand new seconds hand (could be too shiny compared to old hands) -- looks fine
  • [x] Stem doesn't engage properly, decase and investigate -- it's the wrong crown for the case!
  • [x] Try correct stem/crown -- winding very stiff, hmmm
  • [ ] Trial with correct stem outside of the case -- does it just need a spot of grease?
  • [ ] Order new case clamps
  • [ ] Try oiling the jewels, only achieving approx. 170° amplitude

Omega 131.019 gold-plated

30463681 (1970), cal 601, worn crown, 43-hour power reserve, crystal is loose, case back is a mess, very strong running so might not do a full service.

  • [x] Replace case back
  • [x] Trial refitting old crystal -- cracked it
  • [x] Present on new leather strap
  • [x] Order new crystal: ⌀ 30.8mm, 3.5mm height
  • [x] Fit new crystal
  • [ ] Measure amplitude
  • [ ] Partial service of keyless works

Citizen 2800A

Time drifts, quite erratic 180° amplitude.

  • [ ] Review keyless works
  • [ ] Service
  • [ ] Replace main spring (gets very low amplitude on a low wind)
  • [ ] Bezel has a gap
  • [ ] Grease gasket

Longines 12.92

Hands a little fragile, no case, 27.8mm movement, 26mm dial. I found a 16-jewel version with a wobbly balance to use as a donor, so basically I'll make one good one out of the two. Might've been easier to just to stick the good balance in the 16-jewel, but it seems both balances are a little wobbly. Will service and try again.

See Longines serial numbers.

Issues

15-jewel

Serial 4,929,243 (1930).

  • [x] Clean dial
  • [x] Remove broken stem
  • [x] Fit missing ratchet wheel -- took wheel and barrel (with mainspring) from the other one
  • [ ] Service
  • [ ] Refit good balance

16-jewel

Serial 5,107,778 (1932), broken balance but otherwise movement is OK.

  • [x] Clean dial -- not very effective
  • [ ] Find new case

Timex

Keeps great time, 40-hour power reserve, 180° amplitude

  • [ ] Attempt to bend bend hour hand back
  • [ ] Minor service

Borgel trench watch 24 9

Marvin 362, 29.5mm; bezel ⌀ 30.2mm. Bezel measured thrice: 30.17, 30.21, 30.24. So I went for a 30.4mm crystal and it was a success.

  • [x] Order 30.4mm crystal
  • [x] Polish silver
  • [x] Replace crystal
  • [x] Order donor movement for practice/spares
  • [ ] Rachet wheel is missing a tooth, still works but might replace from donor for completeness
  • [x] Pusher has come loose during cleaning -- fits in OK anyway
  • [ ] Service
  • [ ] Repair original strap -- see leather conditioner

Raketa 2609.HA

From 1975, in good condition and running well. Measured 47h power reserve (nominally 45h) -- see Ranftt. Dial brightened up with a little with water and cottonbud, also removed some of the gunk on the chapter ring.

  • [x] Check power reserve
  • [x] Clean dial
  • [ ] Ultrasonic clean
  • [ ] Lubricate

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