Lincoln Electric SVM168-B Charging Circuit Test, Figure F.5 Location of Voltage Regulator

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F-28 TROUBLESHOOTING & REPAIR F-28

CHARGING CIRCUIT TEST (continued)

FIGURE F.5 – LOCATION OF VOLTAGE REGULATOR

Engine

Ground

Lead

(Green)

Voltage

Regulator

AC Lead

DC Lead

AC Lead

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TEST PROCEDURE

1.Start the engine and run it at high idle (3650 RPM).

2.Set the voltmeter for AC volts and place one meter probe on each of the two out- side leads that attach to the engine voltage regulator. See Figure F.5 for location. Check for 42-52 VAC at the voltage regula- tor.

3.If the AC voltage is low or not present, the engine flywheel alternator may be faulty. This is an engine problem; consult your local engine repair facility.

4.If the voltage reading is correct, then check the output of the voltage regulator to deter- mine the charging voltage for the battery. Run the engine at high idle (3650 RPM). Set the voltmeter for DC volts and place one meter probe on the middle lead and one probe on the green ground wire con- nected to the voltage regulator. See Figure F.5 for location. Check for 13-15 VDC.

5.If the DC voltage reading is incorrect or not present, the voltage regulator may be faulty. Replace the entire voltage regulator module.

6.If the DC voltage reading is correct, check the associated wiring and circuitry. See the Wiring Diagram.

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