LR3 Alternator Replacement

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Disco Mike

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Call them on their contact number, they will have what you need and tell the Disco Mike sent you.
 

LTCU

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Good write up. I was also able to replace the alternator without removing the belts. Interesting note, I took the old alternator to a local auto part store and it tested ok on their test. I went ahead and replaced the alternator anyway and it turned out that was the problem. My guess is the voltage regulator on the old alternator had gone bad but on the bench test the alternator was still generating voltage.
 

PhyrraM

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Many normal (and older) test machines cannot properly test the LR3's alternator. The engine ECU controls the exact output voltage through a PWM line. It supposedly uses engine temp, time of running, ambient temp, battery voltage, etc.. to "smart" charge the battery for extended life.
 

er1c

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Attached is a picture of the updated front differential breather tube from my LR3.
 

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Houm_WA

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nice...tlt, any word on the REAR diff breathers?
 

hell pie

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wcryer, thank you for the writeup! I just replaced my alternator over the weekend, and also used the opportunity to replace my two belts. There is a newer idle pulley that I put in as well. It is part number PQR500350. The newer version has raised guides that help keep the belt in position.

As was already mentioned, I was able to replace the alternator from under the vehicle, without removing the passenger front wheel and associated wheelwell plastic.
 

USMCLR3

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Brooke Lynn - PM sent. I just changed mine on a 4.0 V6. Easy DIY job. Note that the Bosch alternator does not work with its connections near the 12 o'clock position. They need to be closer to 9 o'clock to clear the thermostat housing and to reach the wires.
 

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