F-44
FLYWHEEL ALTERNATOR TEST (continued)
210 (TO
RUN-STOP
212A (TO BATTERY
1
3
SWITCH)
CHARGER CIRCUIT
BREAKER)
224 (TO HOUR
2
4
METER POS.)
224A
WELDER HARNESS SIDE
LEAD ENTRY VIEW
ENGINE CONNECTOR BLOCK J51
ONAN P216 ENGINE
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.
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.
TROUBLESHOOTING & REPAIR
FIGURE F.20 – PLUG J51 PIN LOCATION
BATTERY
3
1
TO OIL
CHARGER
PRESSURE
IGNITION
4
2
SWITCH
212A (TO BATTERY
CIRCUIT +12V
CHARGER CIRCUIT
BREAKER)
ENGINE SIDE
LEAD ENTRY VIEW
Measure the
RANGER 250
221 (TO
RUN-STOP
211A (TO START
TO FUEL
3
1
SWITCH)
BUTTON SWITCH)
SHUTOFF
225 (TO BATTERY
SOLENOID
2
4
PC BOARD)
WELDER HARNESS SIDE
LEAD ENTRY VIEW
ENGINE CONNECTOR BLOCK J51
KOHLER CH20 ENGINE
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.
F-44
IGNITION GROUND
3
1
TO STOP ENGINE
BATTERY
2
4
CHARGER
ENGINE SIDE
LEAD ENTRY VIEW