Voltage Regulator Adjustment

TM 9-2320-360-20-2

NOTE

Batteries should be at least 95% charged.

Specific gravity readings should be

greater than 1.270.

b. Voltage Regulator Adjustment

WARNING

Use extreme care when measuring voltage while engine is running. Rotating fan

blade and hot engine parts may cause injury.

CAUTION

Electrical accessories should be in off position for adjustment to be correct.

(1) Remove plastic cap (1) from access hole in

cover (2).

(2) Connect voltmeter leads across positive (+)

terminal (3) and negative (-) terminal (4).

(3) Start and operate engine at idle with aid of

assistant (TM 9-2320-360-10).

(4) Insert small screwdriver in access hole of cover.

CAUTION

Do not force adjusting screw past

stops at either end of range. Damage

to voltage regulator may result.

NOTE

Turn adjusting screw clockwise to increase

voltage, counterclockwise to decrease

voltage.

Replace alternator

14.05

volts

cannot be obtained.

(5) Turn adjusting screw (5) until voltage of 14.05

vdc is obtained.

(6) Install plastic cap (1) in access hole of cover (2).

(7) Disconnect voltmeter test leads from negative (-)

terminal (4) and positive (+) terminal (3).

Change 1 7-4.1