Jump to content

Seiko 7548-700F Problem Prior To Repair


Recommended Posts

Hi,

 

Need some help here before I tear down this watch.  I am fixing a friends Seiko 7548-700F Qtz (1981 Model) and, after putting in a new battery, it stops after running exactly 5 minutes.  If I advance the minute hand a bit, it starts running again.  When it stops, the second hand seems to stutter in place.  Any thoughts or experience here?  Is this a bad gear or dirt?  I do intend on disassembling an hand cleaning all the parts.

post-1767-0-06078700-1454171128_thumb.jp

post-1767-0-17775900-1454171136_thumb.jp

Link to comment
Share on other sites

I was searching for an original or a substitute movement and found this:

 

http://forums.watchuseek.com/f21/older-quartz-divers-7548-vs-7c43-movement-comparison-565340.html

 

http://jikanwatch.blogspot.com/2013/10/seiko-7c43-7010.html

 

But then, since you wan to fix it, I found this:

 

https://adventuresinamateurwatchfettling.wordpress.com/category/seiko/7548/

 

It is possible that old oil and dirt is preventing the wheels from moving properly...let's hope for the best and please, keep us posted on how you get on with the watch.

 

Cheers,

 

Bob

Link to comment
Share on other sites

Looks like a fun little movement to work on. Have only been inside a 7C46 which is movement plate is in plastic. This one looks more robust? Has as the 7c46 a lot of parts in the keyless work area. Tricky to work on. But rewarding when working again. I think the watch needs a good cleaning. Best if you find a service manual. So that you get the right lube. 

Link to comment
Share on other sites

Looks like a fun little movement to work on. Have only been inside a 7C46 which is movement plate is in plastic. This one looks more robust? Has as the 7c46 a lot of parts in the keyless work area. Tricky to work on. But rewarding when working again. I think the watch needs a good cleaning. Best if you find a service manual. So that you get the right lube. 

 

Yep. I do have the service manual and I am going to use Moebius 9010, D5 and KT22.....that should do.

  • Like 1
Link to comment
Share on other sites

 

Do you prefer working on a movement with a movement holder or a watch cushion 

 

My understanding is that a watch cushion is not for working on the movement itself. That's the job of a movement holder, it holds the movement so you can do all sorts of manipulations in a way safe to the movement. The cushion is for crystal and other cased parts protection. Then you have the case holder for holding the case and do stuff too.

Link to comment
Share on other sites

Hand cleaning all the appropriate parts starts this weekend. Waiting for the new bezel insert and crystal to finish off the case. I still have not found out why the watch runs for exactly 5 minutes then stops with the second hand shuttering. Then, if I advance the time a bit, it starts again. Must be a gear??

From Canada

Link to comment
Share on other sites

  • 2 weeks later...



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • I wish that was the case. The Aegler movements used in the early days by Wilsdorf & Davis (for brands like Rolex and Rolco) came in several sizes and without designated calibre numbers that survive.  They become a bit easier to identify during the 1920s. Below is an Aegler-Rebberg, 25.74mm in diameter. It’s from a woman’s Rolex wristwatch. Stamped Rebberg and 500 on the dial plate (but it isn’t a Rebberg 500, it’s the wrong size).  I’d be interested if anyone can identify the movement.  It is based off the Aegler Nr.1, circa 1903, but they based many many calibres of different sizes on it. The closest I have to a positive ID is the  ‘Rolex Nr.50’ circa 1917, but no dial side images or movement sizes are available in the references. There are identical looking movements in many sizes.  The 25.74mm of this movement is a particularly strange size for the era, it equates to 11.41 lignes.      Best Regards, Mark
    • It looks like this movement comes with a number of different shock settings. Emmywatch shows that it comes in versions with no shock settings, 'Incabloc', 'shock resist', and 'Supershock'. Perhaps the different settings position the impulse jewel/roller table in a non-ideal position relative to the pallet fork/guard pin. Are you able to check under high magnification if the pallet fork and roller table are able to operate without any interference? Just for fun I took a look and I have one FHF 70 in my collection, a West End Secundus with a non-shock protected FHF70. I had a note with the watch that said, "Movement is stamped 'FHF 70', but the FHF70 looks to have sub-seconds instead of center seconds movement (??)" but that a google search turned up both types for this movement. EDIT: I just took a look in my parts drawer and I have a few of these movements, both in center seconds and sweep seconds, but they all are non-shock protected.  
    • Any info on this watch would help. I know that it's sterling from London but I could not match the o letter date or make out makers mark.  Is the movement maker Camberwell or Lamberwell?   If I give it a twist it will run for about ten seconds.  $45 yard sale find.  I don't think that I want to service a fusee.  What quality is it?
    • Hello As I am learning, does anyone have any recommendations  on Repair and sourcing in Gold Coast, Qld, Australia ? eg old Seiko coil 4002920 Thanks. Cheers, Ken
    • Is this what all you're looking for? 
×
×
  • Create New...