The Ford Barn

JimNNN · 08-13-2019, 09:35 PM

I tightened up the belt from about 1-1/8" slack to 3/4" slack, and - believe it or not - it seemed to help. I wouldn't have thought that small amount would make a difference, but it seems to. Where the car previously needed to be taken out on the highway above 50mph (no overdrive) before the light went off, it now goes off at above 30mph in town. I've been testing it over the last couple of days.

I check the battery voltage right after I shut the car off after driving it enough to turn the gen light off (and then some)...the reading is close to 6.5 volts. After it cools off and sits for awhile, the voltage reading on the battery goes down to 6.2 (+ or -) volts and pretty much stays there. I guess that's workable, but I want to try it at again when the headlights are on.

Maybe someday I'll go to the 6 volt alternator, but they are a bit on the expensive side (if I get the "generator looking" one that will fit my brackets.)

08-13-2019, 09:35 PM	#14
JimNNN Senior Member Join Date: Apr 2014 Posts: 522	Re: 6 volt generator light question I tightened up the belt from about 1-1/8" slack to 3/4" slack, and - believe it or not - it seemed to help. I wouldn't have thought that small amount would make a difference, but it seems to. Where the car previously needed to be taken out on the highway above 50mph (no overdrive) before the light went off, it now goes off at above 30mph in town. I've been testing it over the last couple of days. I check the battery voltage right after I shut the car off after driving it enough to turn the gen light off (and then some)...the reading is close to 6.5 volts. After it cools off and sits for awhile, the voltage reading on the battery goes down to 6.2 (+ or -) volts and pretty much stays there. I guess that's workable, but I want to try it at again when the headlights are on. Maybe someday I'll go to the 6 volt alternator, but they are a bit on the expensive side (if I get the "generator looking" one that will fit my brackets.)