Tripac APU "Pre Evolution"

[Wiseman]

Termoking APU alternators rotates CCW ! You MUST transfer your original(OLD) fan plate to the new alternator to provide adequate cooling to coils and most of all to the THE VOLTAGE REGULATOR!
Well discharged batteries will initiate higher current draw and alternator will work hard to meet the demand . Which in turns produces more internal heat than it can handle .
At moments like that voltage regulator simply protects the alternator itself simply limiting current in the system.
In all other cases alternator will work as is intended and rated .
Needless to say ALL terminal connections and cables from truck batteries to APU alternator MUST be immaculate. Ground cables between engine frame and alternator mounting bolt too .
And at last but not least. Not all alternators are created equal. They may look the same but have different power curve at different RPM and so on . Simple A/V readings at different modes will tell you a lot about how alternator is performing and sistem health.