While working on this project I decided to take a closer look at the mechanics as there is almost no information about these parts of the camera and I also wanted to clean off them off so the it moved freely. I figured additional friction will interfere and cause you to over stress the roller springs.
YOU MAY NOT WANT TO DO THIS PART … if you don’t want to bother paying attention and note the positions of certain gears … then it may not operate properly after you put it back together.
I took off the light baffle to get at the slow speed escapement. This is held on by three screws on the bottom and four screws under the top (not so easy to put back on) … note that this baffle also secures the top gear plate so keep aware of the spring rollers when everything gets loosey goosey.
Take out the slow speed escapement that is sitting on the bottom … two screws from the bottom. Toss that in the ultrasonic. Pull off the slow speed bar.
Top gear cover plate … three screws (not the fourth in the middle).
Take note on the left side that there is the end of a spring that goes through it that needs to be worked out.
#1 – Film advance gear. This gear is responsible to wind up all the rest of the gears to set the shutter.
#2 – This gear is sitting on a spring. The rewind lever pushes this gear down when in winding position to couple winding gear 1 with 3. I just realized that the gear is upside down in this picture … the gear should be low to engage the winding gear.
#3 – Is a dual stacked gear. The top engages gear 4b, and the bottom turns the first curtain roller gear #5
#4 – This is the shutter release and sprocket section. There are three gears here … the top one 4a is attached to the top plate and it has a pin on the bottom. You can see from the upper image that the middle gear 4b has a circular trench that the pin sits in. When in it’s locked position, it is turned by gear 3 which turns gear 6a that turns gear 7, which is the first curtain roller.
#5 – Second curtain roller gear. The one on top is driven by the first curtain roller gear #7 The one on the bottom is driven by the second curtain roller.
#6 – Speed selection post. The top gear 6a is turns this post, the lower gear 6b revolves independently. The lever in the middle triggers when the second curtain gets released.
#7 – Second curtain roller gear … there is a notch, which I have not figured out what it is for.
That long lever the left is the spring loaded to push the slow speed bar into position.
The curtain roller can be pulled off to be cleaned.
I did not completely disassemble all the components, as some items did not want to come apart easily, so I cleaned it up whatever I could reach to try to get in between parts to get old oil out and put some new oil on the pivot holes.
Before putting the gear cover plate back on you need to set the flash trigger gear (on the left) into position. Gear 4a needs to be placed into position … release the shutter and turn the gears into its final position, then turn gear 4a with the post pointing at the large hole … you may need to adjust this to have it sit properly in the gear 4b groove without pushing it down.
FYI, on the LCR Facebook group Ketil Berge Lunde has the most awesome illustrations of the part interactions of the cameras he has worked on … which, even though I have an artistic flair, I cannot create.
This Old Camera 