Originally Posted by BB69
About adjusting the voltage on the regulator, how do you do that? I didn't even know it was adjustable to be honest? Also, what is the small cylinder that is bolted to the regulator? Ken
The small cylinder is a noise filter, a capacitior, to filter out some of the voltage spikes caused by the mechanical regulator.
Regulator adjustment can be done at an alternator rebuilding shop. Take your alt along and let the tech adjust both as a system.
Or, if you really want to tackle the job, remove the reg cover, and the left coil, if reg connector is pointing down, is the voltage coil. You will find a small spring on the side of the coil between two tabs. Some regs have an adjustment screw, others do not. Use the screw or bend a tab to lengthen the spring. Lengthening the spring increases the charging voltage.
There are other factors used in adjusting voltage with an older regulator model. Battery charge state, regulator temperature, engine rpm, electrical load, and battery temperature. All these factors go into the equation to properly determine the voltage setting.
What would I do? If the shop could not adjust the reg for 14.4 volts, then I'd buy a Wells VR715 regulator. This is the electronic version of the mechanical. Just transfer the cover from the old one and it looks OE.
If you want to try and adjust yourself, after running the engine for 5 minutes at fast idle, charges the battery from using the starter, measure charging voltage at the battery posts. Turn off engine, remove neg cable from battery, remove reg cover, measure length of spring and record for future reference, lengthen the spring alittle, replace cover, cable and remeasure charging voltage after 5 minutes of running.
Take small steps in adjusting until 13.8 to 14.5 volts are reached. However, with all electrical loads applied, lights, heater, wipers, voltage should not be below 13.5, loads off, engine running at idle, ignition only, voltage shouldn't go above 14.5 volts.
Running the car for two weeks at a time and following battery charge state, this will determine the charging of the battery.
And it does read like you have all connections covered. Glad to read 1 AWG cable is being used.