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

Discussion in 'Camera Building, Repairs & Modification' started by pentaxpete, Oct 2, 2013.

  1. pentaxpete

    pentaxpete Subscriber

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    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 ?
     
  2. Tom1956

    Tom1956 Inactive

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

    shutterfinger Subscriber

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  4. John Koehrer

    John Koehrer Subscriber

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    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.
     
  5. shutterfinger

    shutterfinger Subscriber

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    and they both damage plastic and rubber.
     
  6. John Koehrer

    John Koehrer Subscriber

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

    pentaxpete Subscriber

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

    pentaxpete Subscriber

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    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 !