TROUBLESHOOTING & REPAIR
F-44 F-44
RANGER 250
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FLYWHEEL ALTERNATOR TEST (continued)
FIGURE F.20 – PLUG J51 PIN LOCATION
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.
