Quote:
Originally Posted by burner31
You may have seen this already...but if not, here you go:
Setting the generator third brush
A) Loosen the generator dust cover bolt and lift off the dust cover.
B) Loosen the third brush nut and shift the third brush assembly counterclockwise (as viewed from the front of the car) as far as possible.
C) Start the car and bring the engine to a high speed that produces the maximum charge from the
generator. Turn on lights and observe an Ammeter reading of 7 to 9 Amps discharge.
D) Advance the third brush setting clockwise (as viewed from the front of the car) until the Ammeter
shows a slight charge of 1/2 to 1 Amp with engine at this same high speed. The generator is now
putting out 8 to 11 Amps. This should be the correct setting for the third brush.
Do not advance the third brush further or the setting will be too high! - The correct setting will occur with the thirdbrush advanced only slightly further than the center of its mechanical adjustment range. The third brush must notbe advanced further.
E) With engine still at high speed turn off lights and observe that the charge rate jumps to 8 to 12 Amps where the charge rate will remain until the battery reaches full charge. It may take a few seconds, a few minutes, or a few hours for the battery to reach full charge. When the battery is nearing full charge, the charging rate will taper off until only 1 to 4 Amps of charge current remain.
Make certain that the battery charge rate does not exceed 15 Amps during this charge time
.
A lower setting of 10 to 12 Amps is best and will result in longer generator life. If charge rate is ever allowed to exceed 15 Amps, generator damage will result. Do not attempt to readjust the third brush once the regulator has begun to taper the charge since the regulator will tend to compensate for the adjustment and it is very easy to advance the third brush too far which will result in generator or voltage regulator failure.
F) Tighten the third brush nut.
G) Check proper operation by idling the engine with lights off and then quickly increasing engine
speed. The Ammeter should show a momentary high charge rate (8 to 12 Amps) then regulator action should be observed by a noticeable decrease in charge rate.
H) Install the generator dust cover and tighten the dust cover bolt.
IMPORTANT!
- A final check must be made after 24 hours of no operation of car or battery by starting the car with the starter and bringing the engine immediately to high speed. With all lights off the Ammeter reading should be at or below 15 Amps. If higher than 15 Amps, reduce the third brush setting immediately! This is the maximum reading you should ever see and it will soon taper off once the battery comes up to charge. Thereafter the peak reading will be in the 8 to 12 Amp range. This first reading is higher right after the car is first started because the battery voltage is lowest since the battery has not been charged for 24 hours.
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Thank You burner31,
You have given me a lot of detailed information. certainly gives me a lot more to be aware of.