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Engine 165

Excessive amps at cruising rpms

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my 47 type 45 I've noticed that the amp gage reads around 50 amps while running down the road is this normal 

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Doesn't sound horrible.  Don't have an official spec either.  Have to take into account the running of all the lights, siren and possibly an inverter or rectifier, if equipped.

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I had the same problem with 1960 B Model 12V (- grd). It turned out to be the regulator. I had the generator and regulator off the truck and check as a unit.

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First and cheapest thing,  check the batteries.  Clean tight connections,state of charge,fluid or water level and age of battery..  it’s free and just good maintenance..  👍

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