Seiko 7548 - how deep to press crystal retaining ring - Seiko & Citizen Watch Forum – Japanese Watch Reviews, Discussion & Trading
Reply
 
LinkBack Thread Tools
Old 12-30-2017, 03:19 AM   #1 (permalink)
Member
 
Join Date: Jan 2017
Posts: 70
Points: 4 (+)
Default Seiko 7548 - how deep to press crystal retaining ring

Hi everyone,
I need your advice after exchanging the crystal of a Seiko 7548 to new sapphire from Yokobies.
To go more in detail: I was not able to press the retaining ring as deep as it was before. Now I am wondering whether this is because of my poor work (and low experience) or if the crystal dimensions may differ a bit.
So, would you dismount and try again or is this quite normal?
Some pictures for your better assessment:




Sent from my mobile using Tapatalk
fishwatch is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-30-2017, 08:37 AM   #2 (permalink)
Senior Member
 
GuyJ's Avatar
 
Join Date: Mar 2015
Location: North East
Posts: 7,347
Points: 374 (+)
Default

Hmm. Some don't click like a genuine one, but you have to make sure you have the gasket holding ring the right way round and make sure the gasket is tucked in nicely. After that, the crystal should press home fairly easily. Once that's all in place the bezel should snap in place with a press, if it doesn't it normally means I've got an AM one or there is one of the above issues.

What's the profile of the crystal like compared to the original? Do the bevelled edges match? I've noticed that there is a slight gap around the edge when the bezel is pressed home but you can see how easy it is to remove thereafter to work out whether it's installed correctly or not. If it too easily spring clear, check the other parts are installed correctly and check with the original crystal installed as to how the bezel/crystal retention ring situate.
__________________
@rexworthywatches
GuyJ is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 03:18 AM   #3 (permalink)
Member
 
Join Date: Jan 2017
Posts: 70
Points: 4 (+)
Default

Hi GuyJ, many thanks for your reply.
I dismounted it again and it was quite easy to remove the retaining ring.
A comparison between old crystal and new sapphire crystal shows a difference of the bevel (see picture). It is obvious that the retaining ring cannot be pressed down that deep compared to the old crystal. But I even don’t know if the old crystal is an original.

Anyhow I was hoping that a crystal from Yobokies is made to fit.
So what to do now?. Complain? Use different retaining ring? Order other sapphire crystal? (Which supplier do you recommend?)


Sent from my mobile using Tapatalk
fishwatch is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-31-2017, 03:20 AM   #4 (permalink)
Member
 
Join Date: Jan 2017
Posts: 70
Points: 4 (+)
Default

Sorry, I should’ve mentioned, that left one is new sapphire crystal and right one is old crystal.


Sent from my mobile using Tapatalk
fishwatch is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 03:22 AM   #5 (permalink)
Senior Member
 
Join Date: Jun 2012
Location: SE UK
Posts: 2,685
Points: 60 (+)
Default

I presume the one on the rights the original
I've had some I can't quite snap home- really depends on how 'anal' (no offence) you are about it and what you intend to use the watch for (i.e. Water resistance). Obviously the shallows bevel is not allowing the retaining ring to fully engage with the lip
The watch will function fine as will the bezel as is
lewie is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 07:10 AM   #6 (permalink)
Senior Member
 
pollyc's Avatar
 
Join Date: Jun 2011
Location: East Sussex
Posts: 5,842
Points: 94 (+)
Default

Send it back. Yobokies should be made aware there is a dimensional problem so the product can be revised. When I was going through my mod it phase and did up dozens of 6309's I bought aftermarket crystals from several vendors before finding one that fitted properly. I also used to use JK's bubble boys a lot because they always fitted.
__________________
Mike
pollyc is online now   Reply With Quote Quick reply to this message
Old 12-31-2017, 07:13 AM   #7 (permalink)
Senior Member
 
GuyJ's Avatar
 
Join Date: Mar 2015
Location: North East
Posts: 7,347
Points: 374 (+)
Default

Personally I'd just buy a KVWR reproduction and not have fhe headache!

You didn't confirm the gasket ring is the right way around. The ring sits on top of the chapter with the edge lip facing upwards. I assume you have got this right and it is the profile that's causing the issue. Strange it's quite shallow to be a faithful repro, and more surprising this hasn't come up before as it must have been used on a load of 6309s already?
__________________
@rexworthywatches
GuyJ is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 07:20 AM   #8 (permalink)
Senior Member
 
Join Date: Jun 2012
Location: SE UK
Posts: 2,685
Points: 60 (+)
Default

The bevel does not look frosted either
lewie is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 09:43 AM   #9 (permalink)
Member
 
Join Date: Jan 2017
Posts: 70
Points: 4 (+)
Default

Yes, the gasket ring was sitting properly.

You mentioned your crystal supplier, but I don’t know these abbreviations. Who is JK or KVWR?


Sent from my mobile using Tapatalk
fishwatch is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 10:43 AM   #10 (permalink)
Senior Member
 
GuyJ's Avatar
 
Join Date: Mar 2015
Location: North East
Posts: 7,347
Points: 374 (+)
Default

I think JK might be Crystal Times. KVWR is Klein Vintage Watch Repair.
__________________
@rexworthywatches
GuyJ is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 10:58 AM   #11 (permalink)
Senior Member
 
jimmy1963's Avatar
 
Join Date: May 2011
Location: UK Northeast
Posts: 7,234
Points: 94 (+)
Default

JK is Jonathan Koch [ swedefreak ]

Quote:
Originally Posted by GuyJ View Post
I think JK might be Crystal Times. KVWR is Klein Vintage Watch Repair.
__________________
Jim
jimmy1963 is offline   Reply With Quote Quick reply to this message
Old 12-31-2017, 12:49 PM   #12 (permalink)
Senior Member
 
GuyJ's Avatar
 
Join Date: Mar 2015
Location: North East
Posts: 7,347
Points: 374 (+)
Default

Ah I see. Alex at CT isn't it..
__________________
@rexworthywatches
GuyJ is offline   Reply With Quote Quick reply to this message
Old 01-01-2018, 01:14 AM   #13 (permalink)
Senior Member
 
Join Date: Sep 2017
Location: Auckland
Posts: 100
Points: 3 (+)
Default

I just got 2 CT crystals for 7548's. One fitted really well while the other would not allow the retaining ring to seat properly.
The crystals I removed were different thicknesses. One at 2.3mm and the other at 2.4mm
Packhorse is offline   Reply With Quote Quick reply to this message
Old 01-01-2018, 06:09 PM   #14 (permalink)
Member
 
Join Date: Jan 2017
Posts: 70
Points: 4 (+)
Default

I just send a mail to Harold, waiting for his reply.
Dimensions will be checked to evening after I return from work. I keep you informed.


Sent from my mobile using Tapatalk
fishwatch is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Seiko & Citizen Watch Forum – Japanese Watch Reviews, Discussion & Trading forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Seiko 7548/6309 Crystal Retaining Ring £20 reduced ncb123 SEIKO & CITIZEN TRADING POST 5 04-29-2016 08:46 PM
Wtb: Seiko 6309 or 7548 Crystal retaining ring. camrok SEIKO & CITIZEN TRADING POST 1 12-11-2014 01:13 PM
WTB: Seiko 7548/6309 crystal retaining ring - WITHDRAWN ncb123 SEIKO & CITIZEN TRADING POST 5 04-04-2013 06:33 AM
SORTED: Seiko 7548/6309 Crystal Retaining Ring ncb123 SEIKO & CITIZEN TRADING POST 0 03-04-2013 11:21 AM
WTB: Seiko 6309 or 7548 Crystal Retaining Ring. Any help appreciated. j111dja SEIKO & CITIZEN TRADING POST 0 08-18-2012 03:20 PM


All times are GMT -4. The time now is 09:03 PM.



Powered by vBulletin® Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.