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Showing results for tags 'voltage regulator'.
Can anyone help me out in finding the part number for the voltage regulator found in the Altenators of the early MY CTT? In my search I have been looking via the Delphi brand, the stats of 190A water cooled and a part for Mercedes alt comes up but nothing I can cross reference to the Cayenne. When i had it rebuilt (brushes, slip rings, bearing) they neglected to grab part # while inside. I now have to re&re alt as it's still not working right and voltage regulator is suspect. Huge TIA.
Hi all, Just leaving this as a reference file for others. I recently had an issue with a dead battery that led me to suspect the voltage regulator was the culprit. After testing the battery's ability to hold a charge, the alternator became the prime suspect. After finally freeing the alternator, I examined the voltage regulator to see it wasn't making a decent contact with the alternator spindle. It was ground down too far. Reason: Positive Battery post wasn't tightened down enough leading to the VR over-working itself. Alternator itself tests out ok. Note from the attached picture the faulty VR on the left and the new replacement VR on the right. New VR costs about $40 with shipping. z