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Charging Systems: Alternators: Adjustment: Notes

NOTE: Ambient temperature must be 122±5°F.
  1. With alternator stationary and switch "I" open (see Figure), remove regulator cover. If testing showed a regulated voltage higher than specified, lower the spring pressure on regulator by bending bracket on yoke up a little.
  2. Conversely, if recorded regulated voltage is lower than specified, bend bracket down a little to load spring with more pressure.
  3. Install cover and repeat testing of second stage. After obtaining correct setting of second stage, check first stage as directed under testing. If voltage value of first stage is 0.2 - 0.7 volt less than the voltage recorded for the second stage, the adjustment is finished. Otherwise, one of the following two cases may occur:
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