Voltage Regulator problem

[NijkampTO]

I took my boat out today and noticed I get close to 16V at full throttle, which could break my new Pulse Pack.

I'm guessing it's the voltage regulator. I took it out, hooked it up to a 19V DC Power supply and checked the outgoing voltage, then I got no reading.

If I get no reading through the voltage regulator, why did I get 16V on the boat? I also have no continuity through the two wires on the regulator.

It's a 1968 100 HP Johnson.

Thanks!

PS: Would a car voltage regulator work as replacement?

 

[tx1961whaler]

Re: Voltage Regulator problem

I don't think that motor has a voltage regulator; it has a rectifier.

 

[F_R]

Re: Voltage Regulator problem

Oh, it has a regulator all right. But it probably doesn't have one any more, after that newly invented "test". No, a car regulator won't work. Using a proper service manual will avoid unnecessary destruction of parts.

 

[tx1961whaler]

Re: Voltage Regulator problem

Aaaaah.....the famous "zero volt regulator"...

 

[boobie]

Re: Voltage Regulator problem

Aaaaaaaaaaa......... The man with no OEM service manual.That WAS a regulator that you had on the exhaust cover of the mtr. By the way, where did you get your voltage readings from ? Was it from some accesssorie volt meter on the dash or right across the battery itself with a good shop volt/ohm meter ?

 

[NijkampTO]

Re: Voltage Regulator problem

I do have the OEM service manual.
The only test it has is.. if your voltage is above 14.5, the voltage regulator needs replaced. (Also supposed to take it out, see what then happens, but my stator and rectifier are good so it's down to the regulator)
So I'm pretty sure it was already damaged before my "test".. just figured out that wasn't the way the regulator works.. apparently it uses the wire to the pulse pack/battery to measure the voltage, and if needed it draws some energy from the stator to reduce the voltage.


I did measure the voltage at the ignition switch..with a in-dash voltmeter and a multimeter .. I should've measured it at the battery too but didn't think about it at the time.

Either way, the pulse pack gets electricity directly from the ignition switch.. if that's above 15V, like it was, it will damage the new pulse pack..


I've ordered this one as a replacement.. it's not from the same motor but has the same wires and seems to do the same job. New these cost over a hundred dollars.

http://cgi.ebay.com/ebaymotors/ws/e...0582657050&viewitem=&sspagename=STRK:MEWNX:IT

Would it be bad for the stator to unhook it and run the motor without it for a while(not long enough for the battery to discharge much)? It's a battery ignition system.. it'll run off the battery, but I don't wanna overheat/damage the stator.

 

[F_R]

Re: Voltage Regulator problem

It won't hurt to run the stator disconnected, as long as it is disconnected from the rectifier. But it will hurt the electric shift clutches to run on very low voltage, so don't let the battery get down too far.