Re: 6V Charging System on 350U

Posted by John T on May 27, 2006 at 18:29:36 from (66.244.90.5):

In Reply to: Re: 6V Charging System on 350U posted by Formerly PaMike on May 27, 2006 at 14:01:21:

Im unsure how good or acurate your voltmeter is cuz a fully charged 6 volt battery when sitting and not connected to anything ought to read around 6.3 volts. To charge much at all when connected up to a good working genny and provided the battery is good????? the voltage ought to rise to at least 6.5 more like 6.8 to 7, again depending on the battery and if its good or not???

YES if using a 3 or 4 pole VR the light switch doesnt need a ground, the gennys field grounds via the VR which does indeed need a good ground itself.

When the gennys field is dead grounded thats the max charge it can put out assuming the VR is good and has a good ground, so if she still dont charge sufficient with a dead grounded field either the genny is weak or the battery is bad.

A simple ohm meter test for fields and armatures can show if a genny is bad cuz the windings are plain old OPEN but just cuz it passes a continuity test dont necessarily mean its good.

If your genny is an older 3 brush type like used on some cutout relay systems, and youre using a VR instead of the relay, its 3rd brush ought to be set in the max charge position cuz if not that limits its output and may be part of yolur problem. The max charge is achieved by moving the third adjustable brush as close as possible to the brush near it.

The Motor Test I described helps tell if the field and armature are good but if you have a 3 brush genny and its set for low charge, that may be all you got until you adjust the 3rd brush for max change.

John T

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