How To Remove And Change The Alternator Of A BMW E46

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The BMW E46 is the generation of the BMW 3-series offered from early 1999 through 2006, coupe and sedan types came with various engineering features including alternator mounting. Changing the alternator is not a complicated process, keep reading until the end and learn how to disassemble the alternator of a BMW E46.

Replacing the alternator is a simple procedure that will take about an hour and will be accomplished with a few simple tools.

How to disassemble and change the alternator of a BMW E46

How to Remove the Alternator From a BMW E46
BMW 3 E46

Failures in the alternator are very annoying, because it is the device that powers the electronic components and the battery. The steps you must follow to remove the alternator from a BMW E46 are as follows:

  1. Remove the air filter Using a 12mm wrench and pliers, remove the 4 side jam nuts, which mount to the engine compartment and lock into place.
  2. Open the hood of the vehicle and remove the plastic assembly that rests on the upper area of ​​the battery to reveal its container.
  3. Proceed to disconnect the poles, both positive and negative of the battery.
  4. Disconnect the power cable that is attached to the alternator with the help of a 12mm wrench.
  5. Weaken and remove the nut that sits in the center of the alternator with a 17mm socket or socket.
  6. Locate the pulley cover on the alternator belt and remove it. Remove the bottom screw with a 16mm wrench.
  7. remove the alternatortapping with a wooden mallet if necessary, if perhaps it appears to be stuck, hit harder on several sides with the mallet until it is silky enough to pull it out.
  8. Put the new alternator in its place until it fits nicely and conveniently.
  9. Loosen the alternator drive pulley with the help of a 16mm wrench, then position the belt so that it is back on the alternator pulley.
  10. Again you must place the plastic cover on the alternator pulley, this is to protect it from corrosion.
  11. Again mount the long screw that should go in the center of the alternator, this must be done with a 17 mm wrench.
  12. Reconnect the power cable to the alternator with a 12 mm wrench.
  13. Reconnect the positive and negative terminals of the battery and also mount the plastic cover of the battery assembly.
  14. Close the hood of your E46 car to finish the installation and start the car to make sure the alternator works properly.

Advice

Dismantling and changing the alternator of a BMW E46 is not a complicated job, besides, you surely have the tools at home, follow the steps to the letter and don’t forget to put back the parts that you removed to remove the alternator.

Suggested Videos

These videos explain in an illustrative way how to change the alternator of a BMW E46. Watch it!

Part 1:

Part 2:

The BMW E46 is the generation of the BMW 3-series offered from early 1999 through 2006, coupe and sedan types came with various engineering features including alternator mounting. Changing the alternator is not a complicated process, keep reading until the end and learn how to disassemble the alternator of a BMW E46.

Replacing the alternator is a simple procedure that will take about an hour and will be accomplished with a few simple tools.

How to disassemble and change the alternator of a BMW E46

How to Remove the Alternator From a BMW E46
BMW 3 E46

Failures in the alternator are very annoying, because it is the device that powers the electronic components and the battery. The steps you must follow to remove the alternator from a BMW E46 are as follows:

  1. Remove the air filter Using a 12mm wrench and pliers, remove the 4 side jam nuts, which mount to the engine compartment and lock into place.
  2. Open the hood of the vehicle and remove the plastic assembly that rests on the upper area of ​​the battery to reveal its container.
  3. Proceed to disconnect the poles, both positive and negative of the battery.
  4. Disconnect the power cable that is attached to the alternator with the help of a 12mm wrench.
  5. Weaken and remove the nut that sits in the center of the alternator with a 17mm socket or socket.
  6. Locate the pulley cover on the alternator belt and remove it. Remove the bottom screw with a 16mm wrench.
  7. remove the alternatortapping with a wooden mallet if necessary, if perhaps it appears to be stuck, hit harder on several sides with the mallet until it is silky enough to pull it out.
  8. Put the new alternator in its place until it fits nicely and conveniently.
  9. Loosen the alternator drive pulley with the help of a 16mm wrench, then position the belt so that it is back on the alternator pulley.
  10. Again you must place the plastic cover on the alternator pulley, this is to protect it from corrosion.
  11. Again mount the long screw that should go in the center of the alternator, this must be done with a 17 mm wrench.
  12. Reconnect the power cable to the alternator with a 12 mm wrench.
  13. Reconnect the positive and negative terminals of the battery and also mount the plastic cover of the battery assembly.
  14. Close the hood of your E46 car to finish the installation and start the car to make sure the alternator works properly.

Advice

Dismantling and changing the alternator of a BMW E46 is not a complicated job, besides, you surely have the tools at home, follow the steps to the letter and don’t forget to put back the parts that you removed to remove the alternator.

Suggested Videos

These videos explain in an illustrative way how to change the alternator of a BMW E46. Watch it!

Part 1:

Part 2:

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