TL;DR: Cleaned slow speed governor, shutter spindles, speed linkages with naphtha, put extra tiny droplets on SSG, on ends of shutter spindles, but get severe capping at 1/1000. 1/500 seems fine. Did I not oil enough? Where do I apply lube, oil or grease, or what adjustment should I make to get 1/1000 working on my FTb?
Long version:
I have an FTb that I bought off ebay for cheap a while ago. Someone seems to have struggled with the speed selector pin screw and also with the winding crank. Having opened the top and bottom of Canon old SLRs in the past, I decided to take a look inside.
Using various online helpful posts and resources, I ended up removing the meter rack assembly, shutter speed plate (not really needed to be removed, could have just disconnected the speed display string), the prism assembly, the CdS cell behind the focusing screen and under the eye piece, the leatherette, the stop down arm, unsoldered the green wires near the galvanometer and finally got the mirror box out.
I used some naphtha for the slow speed governor assembly at the bottom, on shutter speed links, on curtain spindles, on the timer mechanism and also around the sides of the mirror box.
I was very very sparing while applying oil on the slow speed governor and on the shutter speed links. Used a needle on a syringe dipped in oil. I could barely even see the droplet on the needle tip, it was that sparing.
Anyhow, so far so good.
Couple of things I noticed:
1. There apparently was no ND filter in front of the CdS cell. Is there supposed to be one?
2. The slow speed link (which I could post the photo I took here!!), was resting on the base at the bottom, no special bushing or housing or anything. Slow speeds work fine, 1 second is almost dead on, 1/2 as well, can't tell with 1/4 and 1/8. Is this correct that the link will just rest at the bottom without any busing to support it?
3. The following needle link seems to be not fully responsive to the stop down arm (?) on the side of the box.
Put everything back together. All went well. The speed dial string was a bit fiddly and tricky.
Good things: The timer that was sluggish to begin with is prompt and responsive. 1 sec speed is good. So is 1/2.
However, some issues and questions:
The 1/1000 shows severe capping: the curtains travel, but I do not see any light when viewing from behind with no lens attached. Maybe a blink once or twice, but usually nothing. How do I fix the capping? Do I need to apply more oil after the naphtha cleaning?
The following needle needs "coaxing" to follow the stop down arm. Almost like it is getting some friction or the spring lacks tension. How do fix this? Lacking grease on the side of the mirror box?
Thanks!