AF-s motor squeal

Discussion in 'Nikon' started by jaymichaels, Dec 29, 2017.

  1. I just picked up a used Nikon 300 mm f4 af-s in excellent shape. After I got it home and mounted it, I notice a squeal and slight clanking sound coming from the focusing motor, How concerned should I be ?. Is it a keeper or a quick return?
     
  2. Do you have any other AF-S lenses?

    All of mine make some noises, although some are louder than the others. A "squeal" is probably the best way I'd describe it, although usually I'm the only one who notices it.
     
  3. Mine had a light squeal from the day I got it (used) - the lens stayed with me some 10 years without fail.
    Others have reported that a squeal is announcing imminent demise of the AF-S motor.
     
  4. several and none make this sound
     
  5. I would be more concerned with the slight clanking sound than the squeal. But then sound is not easy do describe. The squeal might mean its af motor needs cleaning, which can explain why some lenses can squeal for many years without breaking down.

    Does it sound the same when you focus manually as it does when it uses auto focus? Some squeal just the first time when they are used after a few weeks of storage.

    Did your lens come with a warranty or just the right to return it?
     
  6. Agree with Heimbrandt, the clanking sound does not seem right. Does the squeak/clank go away with a few focus operations?"

    Bottom line is was the used deal good enough to help "subsidize" a motor replacement? My 300/4 AFS motor died soon after a squeak appeared, but, who knows, it could run a long time like it is.
     

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