Charging system.
Hi. I just bought a 84 holiday Aluma lite xl. (Plz let me know if I'm posting in the wrong section of the forums) the alternator was replaced yesterday but when I turned the engine on about 4 fuses bl...
Forum Discussion
Asde3326 wrote:
No power at alt battery cable. Found isolater. The pack that the 3 cables bolt to on the isolater came out of the heatsink. (I think its a heatsink) or the housing for the isolated. I'm going back to try the diode test. The alt. Has the disk type pulley, not the fan.
Asde,
First off - Listen to Mex.
Now, are you saying that the plastic block that the three cables bolt to has pulled out of the heat sink (finned aluminum part)???
If that is the case, don't bother with the diode test, it is toast and it also explains exactly what happened.....
Your coach most likely has a remote sense on the alternator. When the isolator went out, the diode to chassis fried and left that open, the alternator went to max (because it could not see what it was doing) and then the coach (house) side diode either stayed alive or melted solid and provided the high voltage (as much as 30V!) to the house side long enough to do a lot of damage.
Matt
