Electrical: Sun Electric states.................

[Hawklover]

That a Studebaker with a 40 amp alternator (ALE-5003) should have a charging voltage of 14.0-14.4 Volts at 70 degrees F.
Since Studebaker never included this information in the shop manual spec section, just want to confirm that this is in fact the proper value as stated.

[Bud]

The normal charging voltage should be somewhere between 13.8 and 14.7 volts with a 12 volt electrical system. The charging voltage will change a bit depending on the charge on the battery, electrical loads and temperature. If the charging voltage is somewhere between 13.8 to 14.7 volts leave the regulator alone unless you are experienced in adjusting them. You can do more damage than good trying to adjust the charging voltage if you don't have the proper tools and don't know what you are doing. Bud

[StudeRich]

Wouldn't the MAX Voltage vary a bit depending if the 5003 is installed in a Hawk or Lark with a 35 Amp. Regulator or a Avanti with a 40 Amp. Reg.?

Not sure if Sun knew the difference, unless they listed Specs for Both Models.

[Hawklover]

Wouldn't the MAX Voltage vary a bit depending if the 5003 is installed in a Hawk or Lark with a 35 Amp. Regulator or a Avanti with a 40 Amp. Reg.?

Not sure if Sun knew the difference, unless they listed Specs for Both Models.

Rich to answer your question, the Sun spec is based on all "Jet Thrust Engines", be it in an Avanti, Hawk, Lark, or Wagon.

[Hawklover]

The normal charging voltage should be somewhere between 13.8 and 14.7 volts with a 12 volt electrical system. The charging voltage will change a bit depending on the charge on the battery, electrical loads and temperature. If the charging voltage is somewhere between 13.8 to 14.7 volts leave the regulator alone unless you are experienced in adjusting them. You can do more damage than good trying to adjust the charging voltage if you don't have the proper tools and don't know what you are doing. Bud

Thanks for this information!, it seems that based upon my web search the consensus was 12.8 to 14.8 volts. So I "assume" there are lots of variables.

[Bud]

The voltage shouldn't vary more than a couple of tenths of a volt in any application if everything is in good working order. When I adjust a regulator, I aim for somewhere between 14 and 14.3 volts which puts everything in the middle of the range. The 12.8 to 14.8 volts specification if for the newer vehicles with a variable output alternator. Anything below about 13.5 volts output will not fully charge a battery. I see the voltage on my 2010 Silverado vary between maybe 13.5 volts to at least 14.6 volts depending on the charge of the battery. Bud

[Hawklover]

The voltage shouldn't vary more than a couple of tenths of a volt in any application if everything is in good working order. When I adjust a regulator, I aim for somewhere between 14 and 14.3 volts which puts everything in the middle of the range. The 12.8 to 14.8 volts specification if for the newer vehicles with a variable output alternator. Anything below about 13.5 volts output will not fully charge a battery. I see the voltage on my 2010 Silverado vary between maybe 13.5 volts to at least 14.6 volts depending on the charge of the battery. Bud

Ok I understand your statements concerning new vehicles, but what I wanted to know was if Sun Electric was "correct" in stating that an Avanti or any R series Stude should have a charging voltage of between 14 to 14.4 Volts.

[Bud]

I answered your question in my first post. Sun Electric is correct.

[Hawklover]

TU appreciate the information!