Checking & Adjustment: Adjustment

Remove pipe plug on regulator and insert a small screwdriver into slot and turn counterclockwise for an undercharged battery one or two notches to increase setting. For an overcharged battery, turn clockwise one or two turns to decrease setting.

NOTE: For each notch moved, voltage setting will be changed by.3 volt. Check for an improved battery condition over a service period of reasonable length.

Voltage Setting (9000590)

13.7-14.3 volts with adjusting screw at "O".

Voltage Setting (1116365, 366, 368) (With Adjusting Screw At "O")

Temp.	(1) Volts
65°F	13.8-14.5
85°F	13.7-14.4
105°F	13.5-14.2
125°F	13.4-14.1
145°F	13.3-14.0

Voltage Setting (All Others) (With Adjusting Screw At "O")

Temp.

⁽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. Subtract 0.3 volt for each notch moved counterclockwise.

Field Relay Specifications (1116368, 1116374, 1116378)

Air Gap	011-.018"
Point Opening	.020-.030"
Closing Voltage (Except 116374)	2.5-3.5 volts
(1116374)	4.5-6.5 volts

Fig 1: Typical Transistor Regulator Internal Circuits (With Indicator Light Or Field Relay)

Courtesy of GENERAL MOTORS COMPANY