Current And Voltage Output Test: Using Load Tester; Stator Check - Buell 2008 XB SERIES Electrical Diagnostics Manual

48053) leads to the vehicle battery, analyzer instruction
manual, system condition.
2. Follow the instructions in the analyzer instruction manual
to perform a Charging System Test.
See Figure 1-22. The test results will include a decision on the
charging system condition and the measured output voltage
at idle and at 3000 RPM. The analyzer printer will provide you
with a printout including one of two possible test results:
1. CHARGING SYSTEM NORMAL - No problem found.
2. CHARGING SYSTEM PROBLEM - The analyzer detected
a problem and will display one of the three following res-
ults:
a. LOW CHARGING VOLTS - The alternator is not
supplying sufficient current for the system electrical
loads.
b. HIGH CHARGING VOLTS - The voltage output from
the alternator exceeds the normal regulator limits.
c. INVESTIGATE VOLT OUTPUT - The rev voltage is
lower than the idle voltage.
ed02804
Figure 1-22. Charging System Test Results Printout
Current and Voltage Output Test: Using
Load Tester
1. Connect load tester.
a. Connect negative and positive leads to battery ter-
minals.
b. Place load tester induction pickup over positive regu-
lator cable.
2. Run the engine at 3000 RPM. Do not leave any load switch
turned on for more then 20 seconds or overheating and
tester damage are possible. Increase the load as required
to obtain a constant 13.0 VDC.
3. The current output should be 28-34 amps. Make note of
measurement for use in
Testing.
NOTE
Rider's habits may require output test at lower RPM.
1.9 CHARGING SYSTEM,
4. After removing the load, read the load tester voltage meter.
a. If voltage to the battery is not more than 15 VDC,
voltage output is within specifications. Investigate
other possible problems. See Charging System Test
flow charts.
b. If voltage is higher, voltage regulator is not functioning
properly or connections are loose or dirty.

Stator Check

1. Turn ignition switch OFF.
2. See Figure 1-23. Connect an ohmmeter.
a. Disconnect voltage regulator connector from alternator
stator wiring.
b. Insert one ohmmeter lead into a stator connector
socket.
c. Attach the other lead to a suitable ground.
3. Test for continuity with ohmmeter set to the ohms scale.
a. A good stator will show no continuity ( ohms) between
any stator socket and ground.
b. Any other reading indicates a grounded stator which
must be replaced.
4. See Figure 1-24. Remove ground lead. Check resistance
across stator sockets 1 and 2.
5. Test for resistance with ohmmeter set on the ohms scale.
a. Resistance across the stator sockets should be 0.1-
0.3 ohms.
b. If the resistance is higher, the stator is damaged and
must be replaced.
NOTE
Verify that meter reads 0 ohms when probes are shorted
together. If not, subtract lowest value from resistance value of
stator.
ed01454
Figure 1-23. Test for Grounded Stator (Typical)
2008 Buell XB Diagnostics: Starting / Charging 1-31