While it does sound like just the rear bearing as the OP has stated, just some info for others...
*On the KJ CRD alternator is the front pulley, which has a internal over run clutch, this clutch/pulley is prone to failure.
Signs are:
*Noisy front pulley.
*Black sooty build up on the alternator pulley.
*A flat battery.
*If the pulley has failed enough the charge light on the dash will be on.
*No charge or very little coming from the alternator.
*Replacements available from rockauto.com part number 49918.
Regards
Daz
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