| I'm pretty sure the rev counter on the 916 is electrical not mechanical as on my old bus. Thus, all your problems are likely linked. Low/erratic unregulated alternator output are quite likely to be damaged wiring (from overheating) from the alternator to rectifier. It is important you check this alternator wiring (and particularly connectors) before replacing anything related to charging as this fault can burn out both alternator and rectifier. If in any doubt replace with bigger gauge. If the wiring from alternator to regulator is tested as OK and you still get low unregulated output from the alternator then by all means replace it and recheck. If then OK then reconnect rectifier and recheck at idle. If still 12.6V then its likely the regulator is gone as well so change that before it fries the new alternator :-)
Good luck!
Keith |