Citizen Eco Drive W100 Perpetual Calendar

[Affnan]

This watch came in with the Hour hand stuck at 2 o'clock, it's a quartz with solar panel underneath the dial. I had done one Citizen before and I don't really like the plastics parts that can be found in it, they are easily damaged. The caliber is Citizen E870M

 

 

I strip the watch to get to the hour wheel, the solar panel are held in place by contact clip which need to be displace very carefully.

 

 

Sure enough the hour wheel were damage, it's plastic again as I thought and this things don't last that long. Photo below shows the damage teeth

 

 

Replacing the wheel is easy enough, only thing we need to take note were the marking for date wheel at 3 O'clock position which must be align with the date dial at marking between 22 and 23 and the intermediate date wheel must align with a quadrant marking on the frame. Once the above done the date dial guard, solar panel and dial can goes in.

 

 

Now the fun part with this watch.. the hands... since it's a perpetual calendar and with various modes, it will be very confusing for me to get it done. The instruction doesn't help either. The All Reset (AR) shorting as instruction doesn't work in my case and I resort to do it differently.

 

 

How I install the dial is as below..

 

Put 24 hour hand at 24, the Hour at 0, minutes at 0, second at 0 and the day at SUN (can be any day actually), don't install the mode hand until you know which mode it is in. To find which mode the watch were stuck in pull the crown to position 2, if the second hand move in 1 sec increment it's in L-TM (Local time) and if it stop then it should be in TME (Time) .You may need to do this few time after rotating the crown at position 1 to just change the modes randomly.  Then you can put the mode hand to indicate the correct mode it is in.

 

 

The you case the watch, make sure it's fully charge, do the ALL RESET procedure

 

 

Then do the Hand Reference Position Check, (It will be in the wrong position)

 

 

The do the Reference Position Correction

 

 

Then finally set the Time and Calendar, by selecting the mode at TME to set the time and CAL to set the Calendar with appropriate leap year.

 

 

It sure is fun to do this watch, but being quartz with perpetual calendar makes it very confusing to get right.

[Geo]

You've done a great job Affnan, and your illustrations are excellent. I'm not a great lover of quartz watches in general, but this one is really interesting.

[clockboy]

Really good job done job Affnan.  As a matter of interest where did you source the replacement wheel.

[WillFly]

You've done a great job Affnan, and your illustrations are excellent. I'm not a great lover of quartz watches in general, but this one is really interesting.

Same here. Although I much prefer mechanical watches, I have a couple of solar watches - a Seiko and a Citizen Eco-Drive chrono similar to yours. It's reliable and the alarm function on mine is very useful.

[Affnan]

Really good job done job Affnan.  As a matter of interest where did you source the replacement wheel.

Most of the time I obtain parts from Cousins, comparatively cheaper and more convenient compared to local. To make it cost effective I bundle few orders so that the postage charges were shared between few watches. So far I never fail to received parts ordered within 9 days,

 

Royal Mail are the best, even previously when I was doing bike, I ordered beemer parts from the UK and the postage were the best. I can't afford to order from the States since most of the time their shipping charges are expensive making it uneconomical for small time repairman.

 

The only item that I can't purchase from Cousins are batteries due to air cargo restriction, otherwise their Renata price are very good.

[Geo]

What model of Beemer do you have?

[Affnan]

What model of Beemer do you have?

Previously I was using R1100RS as daily commute and doing my own maintenance. As age crop up, decide to take it easy and now using this below... 

 

 

:D

[Geo]

This is not a model I have come across Affnan, it looks like it should be nice and comfortable. :) My old Beemer is an 1978 RS100 Motorsport and is currently undergoing restoration.