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Dissassemble/re-assemble Miyota 8215 movement without cleaning/re-oiling

noob
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noob New Member

noob

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Hey all, I'm new here. Introduced myself in the post below if you want to know how I ended up here: 

I bought a Miyota 8215 movement kit from Rotate watches so I can being learning how movements work and how to diassemble/assemble them: https://rotatewatches.com/product/miyota-movement-kit/?v=60ce0ff3f9c0 

The kit comes with some basic tools, the movement and a PDF on how to disassemble/assemble the movement. The instructions looks really detailed so I'm hoping I'll be able to get it apart and back together successfully.

However, three things have occurred to me right away.

Firstly, Once I've taken the watch apart, before re-assembling I think I will need to re-oil the various parts. I know nothing about this other than various different oils of different viscosities are needed and specialist droppers are needed to apply the oil. Also I assume I'd probably need to clean the parts before re-oiling? Perhaps it is possible to perform a break down and re-assembly without a clean and re-oil? When I asked Rotate about this, they said Lubrication isn’t necessary yet since the movement was just made and lubricated by Miyota already. just wanted to check this is correct? In future, I definitely plan on learning how to clean and re-oil but I'm hoping I can skip this step for now and concentrate on breaking down and re-assembling this movement.

Secondly, I'm wondering if I need a Loupe? I'm wondering if it's possible to dis-assemble/re-assemble without one. Perhaps I need a loupe for just some parts of the disassembly/reassembly. Would really appreciate some guidance on this. Happy to buy one - have seen some videos that suggest a 4x magnifier might be enough for the time being but I'm hoping for this initial task I've set myself of disassembling/reassembling, that I might be able to get away without using one.

Lastly, I do have a bit of a problem with my neck when looking down for long periods of time. I've seen some information online that a watchmaker has his workstation quite high - like 39 inches off of the ground. Is this advisable so the looking down aspect is minimised?

Thanks in advance for any advice!

Edited by noob
watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi The required height is subjective depending on your height and physical state. It is adviseable to have the work surface at a comfortable height and have some support for your forearms  to minimise stooping. Do you intend to have a bench or work on the table, If the latter you can build or purchase table top benches. They have the advantage of room taken up and portability over the fixed bench.

If you intend to dismantle and re assemble the Miyota thn any factory applied lubrication  is finished as removing the wheels and plates will destroy the lubrication where it is placed in the bearings, So on final re assembly it will require re lubricating.  Unless you have 20/20 vision I would recommend loupes, probably to start with a X3    X10, and perhaps for the close work a x15/20. mainly used for checking pivots and relocating wayward pivots into the Jewels.   A bit of reference data below  plus two examples of the table top benches.           Cheers

bench 1.jpg

bench 2.png

8691_276584548-Spare-parts-reference-for-the-Miyota-8205-8215-movement (12).pdf BTI-The_Practical_Lubrication_of_Clocks_and_Watches.pdf

JohnFrum WRT Addict

JohnFrum

Posted
Posted

How about getting a non working 8215 movement to practice disassembly/assembly? That way you can concentrate on that skill before moving on to oiling etc

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