repair cycle i use:
1. Charge battery up to full charge, then take it you a battery shop or parts store that has the battery test equipment taht can place a load on the battery and determine the condition of the battery.
note to file: a bad battery will give you all kinds of problems with your charging system, you must have a good battery.
2. generator test, if you cannot do the test then have it done by shop, but the generator must be working properly
3. VR test: when starting needle goes to (-)
then after starting needle goes to (+) for a short while until battery is topped off.
turn lights on, flashers on if you have then and idle down, needle should go to (-) then speed up motor and needle should go to (+)
(if it does not work this way)
all i have been able to do is replace VR, these new one's are made off shore and cheap, most do not allow for any adjustment. Just replace the VR with the best quality VR you can afford.
#####most people like to get rid of the generator/VR setup and go to a alternator with build in VR as all cars/trucks/tractors have today.
but my old generator has the gearbox on the back that runs the tach, but you can buy tacks that run off the coil and eliminate the geardriven generator.