Replaced a non charging alt this week. To have the replaced alt fail in the same manner. The original removed, looked on the newer side aswell. Not sure of history of vehicle. Only put 5000 km on it since it was purchased. Battery checks out perfect. Any ideas?

It's probably just bad. Part stores rebuilt alternators are crappy at best. I'd look into getting your original rebuilt if it is OEM.

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2006 Jeep Liberty CRD Limited
Gen2 Fuel Head - Magnaflow Exhaust - Ram transmission swap - In-Tank Lift Pump
Moab Wheels - 245/75/R16 LR E Cooper Discoverer AT3 Tires - OME Lift 790/90009 948/60069 - Etecno Glow Plugs - V6 Airbox
RUNNING B100
Pic of my Jeep!

What exactly went wrong?
Bad bearings?
Bad pulley?
Or just not charging?

Did you also test the battery?
A bad alternator will kill a battery.

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U.S. Army Retired