jerry fox Posted December 16, 2018 Report Share Posted December 16, 2018 my amp meter reads high when the engine rpms are up and low when at an idle. battery checks good. how do you check the regulator? Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted December 16, 2018 Report Share Posted December 16, 2018 That’s normal if the battery needs to be recharged. Does the amperage go down after running it a bit, or if the battery is fully charged? Quote Link to comment Share on other sites More sharing options...
PT81Jan Posted December 16, 2018 Report Share Posted December 16, 2018 1 hour ago, jerry fox said: ... how do you check the regulator? Not the specs of a `48, but if it helps, the "how to" should be pretty similar ... Quote Link to comment Share on other sites More sharing options...
jerry fox Posted December 18, 2018 Author Report Share Posted December 18, 2018 Merle, the amps go down at an idle, but goes back up as the rpm go up. the battery is fully charged. PT81, I will attempt to print the schematic try it Quote Link to comment Share on other sites More sharing options...
Merle Coggins Posted December 18, 2018 Report Share Posted December 18, 2018 The regulator limits the voltage output as well as the current output. What Jan posted from the W-series trucks is good info. You can also see the B-Series version for comparison. The DEPTCA site has a copy of a B3 shop manual in the Pilots Knowledge section. Here is a link to the Electrical Section of that manual. http://dodgepilothouseclub.org/know/B4_manual/B-4_electrical.pdf You'll need a good volt meter and a good ammeter that can be wired into the circuit at the regulator. Then you can properly diagnose and adjust the regulator. They explain it quite well in the shop manual. Quote Link to comment Share on other sites More sharing options...
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