M Charging Woes

To confirm you gernerator is functioning properly, and to bypass the regulator, you can ground the field terminal of the regulator to make the generator outputs it"s maximum. When this terminal is grounded and the generator is working properly you should see your ammeter go to approximately 10+ amps. Another suggestion is I beleive the output of the generator can be adjusted by moving one of the brushes on the generator. There should be a screw on the back side of the generator that secures the bruch in place. by loostening this screw slightly you can move the brush position around the armature to make the generator output more or less.

1 – If you’ve truly got a voltage regulator and not a cutout installed (a regulator has 4 terminals labeled GEN, BAT, FLD and L), the light switch will have no effect on charging rate. (The L and H light switch positions are both now simply “off” positions for the lights)

2 – 5 amps of charge only at mid-idle is puzzling. It should be closer to 10 – 15 amps from mid-idle to full RPM. A couple of possibilities for this:

It’s wired up wrong. Here’s a link for a diagram how a regulator should be wired up:

Link

If you find it’s wired up OK, then try working your way through the troubleshooting chart here:

Link

It will not correct the problem, but it will help you identify which component is causing the problem.

Good luck!!