Miyota 9015 keyless fix tutorial

[GenTLe 1,501]

Hi all,

few days ago I managed to mess up the keyless of one of my 9015 based watch and, noticing that there's nearly nothing on this movement in the net, regardless its diffusion, I decided to document the process to share some knowledge with the community (hoping that flickr will not fuck-up like Photobucket...).

 

First of all, I'd suggest all the tinkerers to download this PDF: it's not easy to find and I'm not sure for how much time it will be available online. It is the assembly chart with the part list (it's useful to search for spare parts, other than to see the assembly order): https://docs.google....mEyNmE1MDY3Njc5

 

So this is the movement, rotor side, without the rotor and the balance (at the beginning I thought to do a full service, but then I've seen it was well lubricated so I decided to work on the keyless only):

 

I think the trickier part of servicing this movement could be the small spring clip that keeps the "REDUCTION WHEEL AND PINION 1" (the brass gear visible in the previous pic) in place. It's very very small so not easy to handle...

 

Turning the movement to see the upper face, we can see the "DATE INDICATOR MAINTAINING PLATE" which is kept in place by 5 screws. It also comprehend a system to keep the hour wheel in place (see the popping out gear between the center and the day 22/23):

 

Once removed this is what appears below:

 

The "Calendar corrector lever spring" (903-A17 near to date 11 on the previous picture) has the tendency to remain attached to the plate, take care not to loose it!

Here the same pic with the missing spring:

 

To access the keyless you just need to remove the date wheel spring (next to dates 10 -> 13) and the date wheel itself.

 

Personally, since the initial idea was to do a full service, I removed al the gears (then I saw they were appropriately lubricated and decided not to service it). At least it's more clear for the pictures.

So, the dismantling was in the order of these following pictures:

 

1) removed the date wheel pring, the date wheel and the calendar corrector level spring (this should be enough for the keyless working):

 

 

2) Here is the "naked movement" with keyless still in place (you can see the lubrication is present in the right places):

 

3) after the removal of keyless "setting lever spring":

 

4) after the removal of the keyless "operating lever":

 

5) after the removal of keyless "Yoke":

 

6) after the removal of the keyless "setting lever":

 

The problem on my movement was caused by the fact that the fitting of the stem into the clutch wheel is not very tight so it can happen that the square part of the stem gets blocked into the square hole of the clutch wheel when you're pushing back the stem into the movement and it is then hard to remove it to while pressing the stem release button in order to put it back correctly.

 

To reassemble it just follow the reverse order.

The only attention point is when you put back the setting lever spring. Like for the ETA movements, if you try to put it back in the correct position (so with the setting lever pin already pushing against the setting lever spring), the holes for the screws of the setting lever spring gets unaligned and you can't screw it properly.

Therefore the best way is to put back the setting lever spring with the setting lever pin below its normal allocation and start to screw down the spring a bit, like this:

 

Then put in place the spring against the pin and screw down it properly:

 

Bye,

GenTLe

[NCRich 13,747]

Nice tutorial. Now do one for the 3804B.

[Genius 281]

Good skills but after having fixed a keyless on a 6497 I decided that that aint something i'm tackling again definately not on a smaller more complicated movement like this

[Not Quite Dead 9]

Nice but I think I am going to stay with the whole engine transplant option for a while.

[GenTLe 1,501]

Nice tutorial. Now do one for the 3804B.

 

That is like this: http://forums.watchu...ir-1684826.html (fuck Photobucket...)

 

Here it should be enough: http://www.rwg.bz/board/index.php?showtopic=51598

[NCRich 13,747]

Nice tutorial. Now do one for the 3804B.

 

That is like this: http://forums.watchu...ir-1684826.html (fuck Photobucket...)

 

Here it should be enough: http://www.rwg.bz/bo...showtopic=51598

 

I've reset one, I just forgot to take pics. Now Yodog has asked me how to do it and I've no documentation. Got a funny u-shaped spring in the keyless and the date lever thing is at 11 instead of 5 like the 2813.

[Nikosaldente 630]

Great tutorial!

 

Thanks for sharing!

 

 

Fuck....Photobucket!

 

All my photos are gone from the forum.....