seiko 5 7009-6270-P 7019A mov

ser no 170591. Movement first produced in 1974, so this one must be 1981?

I liked the plain face and had never seen a crystal of this type before..

Won't tick, hands set, date set working.
Found a tech sheet here : http://www.thewatchsite.com/files/Casing%20Guide/27.%207019A.pdf and here: http://www.thewatchsite.com/files/Seiko%20Technical%20Manuals/7019A.pdf

Base calibre is 7005: http://people.timezone.com/msandler/Articles/Workbench/Seiko/Seiko7005.html

Hamilton W10 523-8290, W 10-6645-99 and 1784/73

Took a wild punt on this rather sad W10 This is the ebay pic :

As you can see (and as described) no crown and some damage to the dial.
None original crystal, loose in the case, and no tension ring.

 Hands are good, but dial has missing paint on face and lume on RHS is water damaged.

Movement keeps good time (once I'd found a suitable stem).
Case not too bad.

 dial off and back of movement

 hour wheel off.

 Cannon pinion was very easy to remove. Too easy?

 Keyless works.

 mind the spring!

 Just visible - end of the hacking lever?

 Front side of movement.

 Wound-down and balance cock and balance removed.

 Balance complete.

 Spring! for clicker.

 Power chain bridge off - hacking lever visible.

 2nd (not centre!), 3rd, 4th wheel and escapement.

 bare.

Overall, movement is in good condition and will just be cleaned and oiled.

Split stem

So this is a one piece case, and requires a split stem, which I've not done before.

Movement is a re-badged ETA 2750.

I found http://www.obsoletewatchandclockparts.com/ - excatly what it says on the tin!

I emailed, looking to get a male stem and female extension. Naturally I ordered the wrong bits, but received a very informative email from John :

Hi,

Non of the crowns will be of use for the Ham w10, you dont ask for the stem that fits into the movement, this has a male end, I have these @ £5 & if you use the female crown necks you are nearly there, the hard part is obtaing a crown, ham used a longer than normal 3.2mm deep crown with a diam of 4.9 any larger & it will not fit into the recess, thread .9 to fit over a tube 2.5mm. cousins uk do a divers crown which will fit I cant recall the order code but it is under their divers double O ring section.

john

I also ordered the suggested divers crown from cousins  - 4.5mm (bit too small), but fits the tube well.

Omega 1002 tear-down

I had a 1002 with a trashed balance, bought on ebay.
Very little info on this calibre on the 'net, so here for my education are the stages of stripping the movement.

Three screws release the date plate

Mind the date jumper spring -it'll go for a flyer.
Removing the wheels :

Hour wheel, minute wheel, date jumper lever, etc :

Wheels removed, keyless works left in-situ. Evident that the stem release has to be pushed in on egress and ingress.

Flip it over :

Rotor is released by removing a small silver coloured piece :

Back of rotor and fixing piece :

The balance cock and balance already removed as N/G..

Winder removed :

under-side :

Having 'let down' the main spring through the crown, the ratchet wheel removed. Small spring on clicker :

Bridge :

Centre, third, fourth and escape wheel.

winding bridge : small spring for clicker. There is a small spring on the main plate to keep the unidirectional wheel in position.