Re: Restored voltage regulator
It's not an easy adjustment, but time consuming.
Make sure alt belt is in good condition and adjusted correctly.
Start and run the engine at high idle through and to operating temperature.
Remove battery caps, yeah, right, and measure the charge of the electrolyte and note its temperature.
Measure temperature of regulator at the cover.
Find in an older Motors Manual, and use the look-up chart for temperature to voltage output.
If low or high, cover needs to come off, either remove rivets, or remove cover screws. Straight off is the direction, otherwise, the cover shorts out the relay contacts.
On the voltage coil, the upper one, you will see a spring. Using needle nose pliers or the special tool, lengthening the spring (increasing tension) increase voltage; shortening the spring, decreases the voltage.
After each minute adjustment of the spring, cover must go back on to keep reg warm.
If making current adjustment, turen off engine and remove battery cable and insert a VAT-28 or use the pick-up clamp from the VAT-40 and load the charging system with the carbon pile resistor, inside the VAT and adjust the contact gap for max output as stamped on alt housing.
Recheck voltage again and adjust as needed.
Even after doing the above, every week check the electrolyte level of each cell. If level is low, monitor elec temp. If hot, voltage set too high, lower voltage setting. If battery needs a charge, set voltage level higher.
You can measure across the battery posts and with lights, heater, engine running, make sure it does not go below 13.2 volts. All accessories off, no more then 14.5 volts.
Or replace it with A Wells VR715 and forget it.
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