Stairmaster 8G Gauntlet Service Manual page 22

11. Test for 3VDC going through the alternator. One
probe should be on the B+ post while the other
probe is on the Field post. Removal of the Field
wire may be necessary to get a clear reading.
12. Test for 7VDC going to the battery from the alter-
nator harness.
13. A fully charged battery should top out at 7VDC.
A battery that reads less than 6.7 VDC is consid-
ered 'dead' and should be replaced.
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