Posted by Steve@Advance on August 19, 2019 at 07:08:14 from (24.182.105.128):
In Reply to: Compressor alternator posted by Ed will on August 19, 2019 at 06:33:11:
Sounds like a charging problem.
Have you checked the voltage across the battery with it running up to operating RPM?
Should be in the 14-15 volt range.
If not, check the belt, be sure it is tight and not worn down into the bottom if the groove and slipping.
Check for battery voltage on the large battery stud on back of the alternator, not running.
If no voltage there, there is a broken connection between the alt and the battery. Could be a fuse link, corroded or broken wire, some have a heavy duty fuse.
If the connection is good, and no charge, take the alternator off and have it tested at the auto supply. Most can be substituted for automotive alternators, avoid the dealer if possible!
There are some other circuits to test, but need the name and style of the alternator, or a picture of the back.
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