Genuine Mazda MX-5 Miata Alternator

Mazda MX-5 Miata Alternator Parts and Q&A

• Alternator
  LF9H-18-300R-0A
  Q: How to remove and install the alternator on Mazda MX-5 Miata?

  A:

  In order to take out the alternator of 2005 and up to date models, the first thing is to disconnect the cable of the negative terminal of the battery, then remove an electrical connector of the alternator. To loosen the alternator adjustment and pivot bolts in order to remove the drivebelt, remove the pivot bolt and bolt holding the bracket to the engine and separate the alternator and the bracket to the engine. To do it on 2006 and later models, first of all take out the battery and the battery tray and then unclip the power steering hose out of the support bracket. The serpentine drivebelt and the alternator harness bracket bolt are then removed. Place the front of the car safely on jackstands and lift the under-covers on the engine compartment as well as disconnecting the electrical connectors on the alternator. The alternator is then removed by removing the upper alternator mounting bolt followed by the lower mounting bolts removing the alternator, remembering to remove the lower rear mounting bolt which is used to position a small bracket to support a harness which must be reattached during installation. The alternator has a plastic scoop with two parts to accomplish cooling, the front part is removable by removing one bolt, and the rear part is removable by removing the alternator. Installation New or rebuilt alternator should be identical to the old one in terms of connections and markings, and the store policy on the installation of the pulley should also be considered because most new units do not include the pulley. Last, reassemble the new alternator in reverse of the order of removal and regulate the drivebelt tension on 2005 and earlier models and verify the charging voltage by making sure the positive and negative terminals of the AC voltage source are connected.