ronda 515 Swiss Army Watch late 80s early 90s

[jakec]

So this is my very first project I have decided to tackle and my first posting.  If I do anything incorrectly, please let me know and I shall correct it asap. So  i decided to fix some old watches i had sitting in a box.  I believe this watch is the very first watch I purchased myself, at the Victorinox store in the  Garden state mall NJ.  If I can fix it , i will donate  it to my church to help disadvantaged youth dress for interviews and find jobs.  The movement is a Ronda 515 1 jewel.

I need a crown and tube for this case.  The stem seems as it is intact.  The crown is required to put the stem in second position ,  allowing me to remove the stem.   I searched All the mechanical drawing, but i cant find the crown type. Is there a special tool required to remove the tube and is it complicated?

the crystal is cracked and heavily scratched. so I will need to replace it  How do I determine how to remove the crystal and what type of crystal is it, so I can try to find a replacement

Definitely will need a cleaning, so once i figure out best oil solution I will do that.

I am curious why the watch doesn't say Victorinox on it?

Thanks in advance for any advice or suggestions.

[AndyGSi]

Welcome to the forum.

You don't need the crown to remove the stem as you can just pull it to the 2nd position to access the dimple.

Just grip the tube with a pair of pliers and pull it out. Measuring for a replacement could be a little more difficult for a beginner so maybe best just getting an assortment.

For the crown you'll need to measure the diameter of the recess where it sits, the outside diameter of the tube along with the thread size of the stem (think it's 0.9mm)

Need a closer look at where the crystal meets the case, it looks like what's called an I-Ring and should just push out from the back, preferable with a press.

You can then measure the diameter and thickness of the crystal to get a replacement.

Not sure what you mean about cleaning and oil solution?

Edit

Should have asked if you've checked the movement still works?

Edited 16 hours ago by AndyGSi

[clockboy]

Welcome to the forum, enjoy.. Parts are the problem particularly with vintage watches and your search’s will be long in finding specific parts. EBay is your friend when searching, look for sale “spares and repair” items. 

[watchweasol]

Hello and welcome to the forum. As I recall the Ronda 515 is a replaceable  quartz movement , available from Cousins at approx £10 I have added the technical sheet for you.

TA_512_513_515_de_fr_en.pdf

[AndyGSi]

30 minutes ago, watchweasol said:

Hello and welcome to the forum. As I recall the Ronda 515 is a replaceable  quartz movement , available from Cousins at approx £10 I have added the technical sheet for you.

TA_512_513_515_de_fr_en.pdf 2.18 MB · 0 downloads

Cousins don't have the correct movement variation for the OP.

Edit

Just realised that although the date is at 4, so is the crown, so Cousins do have the correct variation, it's just a matter of which one is needed H1, H2 or H6.

Edited 5 hours ago by AndyGSi