« previous next »
Pages: [1]   Go Down

Author Topic: charging system  (Read 704 times)

0 Members and 1 Guest are viewing this topic.

Offline pinnacle

  • Enthusiast
  • **
  • Posts: 176
charging system
« on: May 12, 2009, 04:49:06 PM »
on a 78 cb550k is it normal to get readings on the battery as high as 16.4 volts when reving near 4000 rpm 14.5 at idle i seem to be popping main fuses readily don't know if maybe it is shorting somewhere since i have the harness exposed from the headlight a a bare ignition switch i was forced to puch out since i don't have keys for the bike got it at a salvage yard.
Logged
1974 cb550, 1978 cb550, 1984 honda shadow vt750

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,802
Re: charging system
« Reply #1 on: May 12, 2009, 06:21:06 PM »
No.  Anything over 14.5 - volts is considered harmful to the battery.

The regulator is supposed to keep the alternator from putting more than 14.5 V on the battery. Either it isn't connected up properly or has failed.
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.
Pages: [1]   Go Up
« previous next »