Lincoln Electric SVM150-A User Manual download pdf (Page 94)

TROUBLESHOOTING & REPAIR

F-44 F-44

RANGER 250

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FLYWHEEL ALTERNATOR TEST (continued)

FIGURE F.20 – PLUG J51 PIN LOCATION

ENGINE CONNECTOR BLOCK J51

ONAN P216 ENGINE

210 (TO

RUN-STOP

SWITCH)

224 (TO HOUR

METER POS.)

212A (TO BATTERY

CHARGER CIRCUIT

BREAKER)

WELDER HARNESS SIDE

LEAD ENTRY VIEW

224A

BATTERY

CHARGER

IGNITION

CIRCUIT +12V

TO OIL

PRESSURE

SWITCH

ENGINE SIDE

LEAD ENTRY VIEW

ENGINE CONNECTOR BLOCK J51

KOHLER CH20 ENGINE

221 (TO

RUN-STOP

SWITCH)

212A (TO BATTERY

CHARGER CIRCUIT

BREAKER)

WELDER HARNESS SIDE

LEAD ENTRY VIEW

211A (TO START

BUTTON SWITCH)

225 (TO BATTERY

PC BOARD)

TO FUEL

SHUTOFF

SOLENOID

IGNITION GROUND

TO STOP ENGINE

BATTERY

CHARGER

ENGINE SIDE

LEAD ENTRY VIEW

TEST PROCEDURE

1. Turn the engine off.

2. Using the 3/8" wrench, remove the three

screws holding the battery access cover in

place and slide the battery tray out enough to

access the terminals. Using the volt/ohmme-

ter measure the voltage at the battery termi-

nals. It should be approximately 12 volts DC.

3. Start the engine and run it at high idle for

approximately 30 seconds. Measure the

voltage at the battery terminals. It should be

13.7 to 14.2 volts DC. If correct, the test is

over. If not correct, proceed to the next step.

4. Check circuit breaker CB7 on the front panel.

Reset if tripped. Repeat Step 3. If circuit

breaker is functioning properly, proceed to

Step 5.

5. Perform the Case Cover Removal proce-

dure.

6. Perform the Power Module Capacitor

Discharge procedure.

7. Locate plug J51 leads 212A (pin 3 or 2) or

engine alternator lead pin 3 (C1). See Figure

F.20. Check from pin 3 to the negative bat-

tery terminal with the engine running at high

idle speed (3700 RPM). Normal voltage is

13.7 to 14.2 volts DC. If not correct, the fly-

wheel alternator may be faulty. If correct,

check the wiring between the flywheel alter-

nator and the positive battery terminal. See

the Wiring Diagram.

8. If finished testing, perform the Case Cover

Replacement procedure.

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Lincoln Electric SVM150-A User Manual Page 94

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