Jump to content

Selita SW-500 Valjoux 7750 cant set time !


Baseq3

Recommended Posts

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

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

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

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

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

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

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

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



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • that band is old as stated, there is a kit that pops up from time to time on selling sites for the repair of these type bands, some of this type are adjustable on a few links, one adjustable type allows you to align the round opening in the expansion slit [like yours] with the rivet to separate, but if yours won't come out then the rivet head is too big and will have to be done with some rivet removal and replacement, I suppose if you could make/optain the correct rivets that one could alter the said band, the tops/caps do lift off after raising the tabs....  
    • This is a watch from a friend who sent it to a neighborhood watchmaker for a battery change. It came back with the watch stem in a ziplock bag and the dial skewed 20°. The watchmaker told him that the stem was faulty and the watch cannot be repaired. I opened up the watch and found that one dial foot was broken off and still stuck in the movement, while the other was bent until it was flat against the dial. The stem could be inserted but it couldn't be pulled out to quickset and time adjusting positions. I did a full disassemble, cleaned and oiled the movement. But when it put in the battery, the second hand runs super fast. Like it gains 30 mins every hour. Any advice on fixing this problem? TIA.
    • I determined that the balance staff is rotating, not the roller table, so my second attempt at riveting was unsuccessful. I have ordered a new balance staff and will take measurements when it arrives. The balance staff i originally ordered (and now reordered) was specified as: Replacement balance staff: (A. Schild Caliber 984 1002 1021 1124 Original Balance Staff Part 723) so it should be correct. Measurements: (see pic below for terminology) xxxyy is a place holder until the new balance staff arrives. Lower pivot: Old - .08 mm New - xxxyy Lower pivot to balance seat: Old - 1.53 mm New - xxxyy Roller shoulder: Old - .42 mm New - xxxyy Hub: Old - xxxyy New - xxxyy Balance shoulder: Old - .86 mm New - xxxyy Collet shoulder: Old - .56 mm New - xxxyy Upper pivot: Old - broken New - xxxyy
    • Hello and welcome from Leeds.  We're here to help. 
    • I was just about to adk that, probably they have unnecessary waiting lists to make their watches appear more exclusive than they actually are.
×
×
  • Create New...