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Which tool checks pulley alignment?

  • A.A feeler gauge between the belt and the flange, which reveals any tendency of the belt to run to one side
  • B.A laser alignment tool clamped to a pulley face
  • C.A straight edge across the pulleys, which is accurate enough for any accessory drive and requires no special equipment
  • D.A dial gauge

Answer: B

A laser projects a line across the other pulleys and shows the offset directly. A straight edge is the traditional method and works reasonably well, which makes the second option a real technique rather than a wrong one. Checking which component actually carries the load settles most questions of this kind at once. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb.

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