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This is a very straight-forward repair. The alternator is mounted with 3 bolts plus 1 bracket mounting bolt/nut.

Disconnect negative battery cable

  • Disconnect wires - be careful of the rubber - plastic cover, they like to break. Don't drop the nut - the new one may not come with one.
  • Loosen all 3 bolts - which will allow the belt to be removed from the pulley
  • Remove the mounting bracket / brace (if equipped)
  • Remove the 3 mounting bolts and remove alternator

Installation - pretty much reverse, BUT, do not tighten any bolts until you have the belt back in place and are ready to put tension on the belt (I always forget & have re-loosen a bolt or 2)

See "Related Links" for Autozone's free online Chiltons repair guide for these procedures.

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Q: How do you replace the alternator on a 1994 Mercury Sable 3.8L?
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