Alternators - DELCO-REMY Transistor: Testing: Adjustment

For an undercharged battery raise voltage setting by turning adjusting screw, remove access plug from regulator cover, clockwise one notch. Check for an improved battery condition after a service period of reasonable length and turn adjusting screw one additional notch clockwise if necessary.
NOTE: After two notches there is a positive stop.

For an overcharged battery, lower voltage setting by turning adjusting screw, counterclockwise one notch. Check for an improved battery condition after a service period of reasonable length and turn adjusting screw one more notch counterclockwise if necessary.

NOTE: After two notches there is a positive stop.

Voltage Test Specifications

Temperature

⁽¹⁾Volts

65°F

14.1-14.9

85°F

13.9-14.7

105°F

13.7-14.5

125°F

13.5-14.3

145°F

13.4-14.2

⁽¹⁾	Add 0.3 volt to specified range for each notch adjusting screw is moved clockwise from "O" position and subtract 0.3 volt for each notch moved counterclockwise.

Fig 1: TRANSISTOR REGULATOR INTERNAL CIRCUITS (TYPICAL)

Courtesy of GENERAL MOTORS COMPANY