Beginners Basics - Cleaning a watch

[Rixi]

Hello everybody,

I'm new to the forum and already introduced myself briefly in the Members section.

Yesterday one of my first acqusitions, a Seiko C515, arrived and even it was sold "as is" it came to life after I put a new battery
But I did not enjoy it too long and disassambled it, because it obviously needs a bath.

I did get off the module, bracelet and keypad and I think also the buttons shouldn't be too tricky to do (I will try later), but I'm struggling with the crystal and it's sealing/plastic (with the Seiko brand name and weekdays printed on it). So I'm wondering:

• Do I need to take out the crystal and sealing/plastic before washing the case (I fear that the writings will wash off the plastic when not removing it)? How do I get it out?
• Which soap or cleaner is the right one?
• Will I need a ultrasonic cleaner (I don't have yet) or is a toothbrush a first good step? Has anyone made experience with cheap models like these ones?
  http://www.aliexpress.com/item/30W-220V-New-Professional-Mini-Ultrasonic-Cleaner-New-Suitable-for-Glasses-Lens-Ornament-Headwear-CD/32347364263.html
  http://www.aliexpress.com/item/Ultrasonic-Cleaner-Jewelry-Dental-Watch-Glasses-Toothbrushes-Cleaning-Tool-600ml-Freeshipping-Dropshipping-Wholesale/1661746637.html

I already searched the forum, but didn't find any info about basic cleaning (maybe I didn't search properly?). I would appreciate a general beginners guide on what are the standard first treatments you guys give a dirty watch.

Thanks for your help in advance,
Johannes

[Kasper]

Welcome to the board.

i always dismantle everything before cleaning it up. You took not an easy watch to take your first steps in restoration.

Here are some possible solutions for cleaning
http://www.newdwf.com/search.php?keywords=vinegar

These ultrasone cleaners are good enough for your purpose...yes you need it...you can use it for your wifes jewelry aswell

i use an old toothbrush for cleaning with basic soap or dreft.

[Rixi]

Hi Kaspar,

thanks for your reply!
The topics about cleanig with vinegar are quite interesting.

Do you (or anyone else) can advise, how to get the crystal out of the case (and later back into the case again)?
Just push it out with my fingers and back in with a case back press? Will I need any glue?

Why is the C515 not the simplest model? I found the disassemply was easy to do -- beside from the crystal ;)

Kind regards,
Johannes

[Kasper]

i make a shape (of crystal) from carbon plate, Then i head up the case and press it out from the inside with the carbon plate so i have maximal equal pressure. It doesn't work all the time.