Did the ' Canon Squeak'but now another fault--

pentaxpete · Oct 2, 2013

I managed to lube the mirror linkage 'squeak' on my 'gift' Canon A1 after several attempts, following a web-site instruction -- I used a piece of electrical 'Fuse-wire' with a small amount of 'Three-in-one' oil on the tip and touched it down into the correct place, and after several months it suddenly has stopped the 'squeak' BUT now I find the faster shutter speeds are slow and over-exposing -- it seems OK from 1/60 downwards. I have inspected both sides of the shutter blind and NO OIL had leaked -- anyone with any ideas please ?

Tom1956 · Oct 2, 2013

Yes. You shouldn't have used 3 in 1 brand glue. Should have used something like a clock oil.

shutterfinger · Oct 2, 2013

3in1 is petroleum blend as is Water Dispersant 40 (same company) and both dry out and leave a sticky residue behind.
TriFlow http://www.triflowlubricants.com/Tri-Flow_Superior_Drip_Lubricant.html
Clock/watch oil
Gun oil
are good oils for cameras.
Use sparingly.

John Koehrer · Oct 2, 2013

Naptha or liquid lighter fluid both work.
The mirror governor uses resin gears mounted between the mirror housing and a metal plate.
Dunno why they squeak but they do.

shutterfinger · Oct 3, 2013

Naptha or liquid lighter fluid both work

and they both damage plastic and rubber.

John Koehrer · Oct 3, 2013

shutterfinger said:
and they both damage plastic and rubber.

There's no rubber in there and the gears are likely nylon or another more durable synthetic, not plastic.

pentaxpete · Oct 10, 2013

Today doing some more experiments as the 1/1000 and 1/500th seem to have 'speeded up' again !

pentaxpete · Oct 11, 2013

pentaxpete said:
Today doing some more experiments as the 1/1000 and 1/500th seem to have 'speeded up' again !

Well, I took some tests using 'TV' and shutter at 1/1000 and 1/500 and the density of the negatives matches so the fast speed must be OK again !

Did the ' Canon Squeak'but now another fault--

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