Lincoln Electric SVM148-B service manual Charging Circuit Test, Alternator Test Procedure

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F-40 F-40

INSTALLATION

CHARGING CIRCUIT TEST (continued)

FIGURE F.13 – VOLTAGE REGULATOR LEADS

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ALTERNATOR

B

IG

L

TEST PROCEDURE

1.With the 5/16” and 3/8” nut drivers, remove the right case side.

2.Locate the engine alternator and leads. See Figure F.13.

3.Set the voltmeter for DC volts and check for the typical DC voltages according to the Charging Circuit Test Chart below.

222D

224A

227

4.If the DC voltages are correct, the engine alternator is operating normally.

If any of the voltage readings are missing or not normal, the engine alternator or associ- ated wiring may be faulty. See the Wiring Diagram.

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CHARGING CIRCUIT TEST CHART

TEST CONDITIONS	TEST POINTS	TYPICAL VOLTAGE
Ignition Switch Off	Lead 222D to Frame Ground	12 VDC
Ignition Switch Off	Lead 224A to Frame Ground	0 VDC
Ignition Switch Off	Lead 227 to Frame Ground	0 VDC
Ignition Switch On	Lead 222D to Frame Ground	12 VDC
Ignition Switch On	Lead 224A to Frame Ground	12 VDC
Ignition Switch On	Lead 227 to Frame Ground	0.7 VDC
Engine running at 3700 RPM	Lead 222D to Frame Ground	14.5 VDC
Engine running at 3700 RPM	Lead 224A to Frame Ground	14.3 VDC
Engine running at 3700 RPM	Lead 227 to Frame Ground	14.3 VDC

RANGER 300 D AND 300 DLX