Jump to content

Selita SW-500 Valjoux 7750 cant set time !

Baseq3

By Baseq3
in Watch Repairs Help & Advice

 Share

Recommended Posts

Baseq3 New Member

Baseq3

Posted
Posted

Hello Everyone currently working on a Tag Heuer Calibre 16 I picked up from an estate sale. The movement is a Selita SW-500 automatic very similar to the Valjoux 7750. Cant get the crown to pull out to position 3 to set time. It will wind properly in position 1 and change day and date when pulled to position 2 but will not pull out any further to set time to position 3 any thoughts ? Thank you.

Link to comment
Share on other sites
jdm Distinguished Member

jdm

Posted
Posted

Something is wrong with the setting lever and related parts, it needs to be taken apart and inspected.

If you never worked on watch movements, have the skills and required tools before I strongly recommend that you give it to a watchmaker and  do not try yourself  as it's a valuable piece.  

Link to comment
Share on other sites
Baseq3 New Member

Baseq3

Posted
  • Author
Posted
1 minute ago, jdm said:

Something is wrong with the setting lever and related parts, it needs to be taken apart and inspected.

If you never worked on watch movements, have the skills and required tools before I strongly recommend that you give it to a watchmaker and  do not try yourself  as it's a valuable piece.  

Thank you for the quick response, I have worked on Miyota - 9100 and cleaned a few ETA-2824-2, but never a Selita SW-500 im thinking maybe the position of the setting pinion or the setting lever..

Link to comment
Share on other sites
jdm Distinguished Member

jdm

Posted
Posted (edited)
1 hour ago, Baseq3 said:

Thank you for the quick response, I have worked on Miyota - 9100 and cleaned a few ETA-2824-2, but never a Selita SW-500 im thinking maybe the position of the setting pinion or the setting lever..

Yes, certainly the problem is in that area. I think you're on the right path to fix it yourself, maybe hone your skills a little more before undertaking this repair and service. In the meanwhile you can watch videos by our Host Mark Lovick, and why not, enroll in the High Definition online course.

 

Edited by jdm
  • Like 2
Link to comment
Share on other sites
Baseq3 New Member

Baseq3

Posted
  • Author
Posted

Update I discovered the setting lever when crown is pulled all the way out does not engage because (see picture below) the post on my timing lever is gone so the lever was not secured at axis point which limited the range in which the lever could full extend. I ordered a new one should be here in a week. I will keep you updated, what I think happened is someone pushed the setting lever post to allow stem to insert or remove and they pushed it to hard and broke it.

s-l1600.jpg

  • Like 1
Link to comment
Share on other sites
jdm Distinguished Member

jdm

Posted
Posted
10 hours ago, Baseq3 said:

Update I discovered the setting lever when crown is pulled all the way out does not engage because (see picture below) the post on my timing lever is gone so the lever was not secured at axis point which limited the range in which the lever could full extend. I ordered a new one should be here in a week. I will keep you updated, what I think happened is someone pushed the setting lever post to allow stem to insert or remove and they pushed it to hard and broke it.

Good finding. See if you can locate the snapped bit still inside the mov't?
It is well know that most damage is done by owners or improvised repairers.  

Link to comment
Share on other sites
Baseq3 New Member

Baseq3

Posted
  • Author
Posted

jdm how right you are, turns out the setting lever is an assembly and the post and screw that holds the post on were wedged in the movement near the yolk spring. Going to see if I cant reassemble the current one.

Link to comment
Share on other sites
jdm Distinguished Member

jdm

Posted
Posted (edited)
5 hours ago, Baseq3 said:

Going to see if I cant reassemble the current one.

Use a round nose stake to close a bit the hole on lever. If you are serious about working on mov'ts a staking set is a must have tool. 

Edited by jdm
Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • ManSkirtBrew
      1972 Bulova President "E" Sea King 11ACACB movement

      By ManSkirtBrew · Posted

      Unfortunately I'm not that lucky. I started on the train side and after I noticed the binding I pulled everything out except the driving wheel to rule everything else out. It still binds. I'm going to double check that the pinion is fully seated on the staff first, then if no joy I'll push the bridge jewel up a fraction of a mm. Fingers crossed!
    • Waggy
      Rado rotor removal

      By Waggy · Posted

      Happy to have helped, great way to start the day with a win! 🥳
    • doober
      Rado rotor removal

      By doober · Posted

      Thank you for the advise!! It worked. The setting screw was a lock/unlock to remove the rotor. 
    • GuyMontag
      1972 Bulova President "E" Sea King 11ACACB movement

      By GuyMontag · Posted

      I have that French tech sheet too, it is a little different than the English one (eg, it doesn't have the auto works diagram). BTW, it looks like you are looking up the case number in the 1979 ABC supplement. The 1974 ABC catalog does have the 3093 case. As you determined it takes the 1222-5 crystal.  When I serviced my President 'A' (which also takes that crystal), I was able to fit a 29.8 crystal from my DPA crystal assortment. Those are, in my opinion, a great deal. The assortment comes with 10 sizes each from 27.8mm to 32.4mm in 0.2 increments. I pretty much use them for any non-armored crystal that takes a high dome crystal. I think they no longer make them but Cousins has still has some in stock but when I bought them they were around $40 for the set and now they are around $100. Still, at 40 cents a crystal it's still a good deal. For the large driving wheel, I remember I once assembled the keyless/motion works first and when I placed the large driving wheel it was interfering with the setting wheel on the dial side as the teeth were not fully meshing and it wouldn't fully seat. If that isn't the issue I got nothing and am looking forward to see how you solve it 🙂
    • Waggy
      Rado rotor removal

      By Waggy · Posted

      Not sure, but just looking at it, it seems like the screw on the right may be a fake? The one on the left may not be a screw in the regular sense at all, rather a 2 position device, I think you need to point the slot towards either of the 2 dots and one will secure and one will open. Like I said this is just my best guess looking at the pictures.
×
×
  • Create New...