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Service and repair should be performed only by Lincoln Electric factory trained personnel.
Unauthorized repairs performed on this equipment may result in danger to the technician
or machine operator and will invalidate your factory warranty. For your safety and to avoid
electrical shock, please observe all safety notes and precautions detailed throughout this
manual.
If for any reason you do not understand the test procedures or are unable to perform the
test/repairs safely, contact the Lincoln Electric Service Department for electrical trou-
bleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This test will determine if the correct DC voltage is being applied to the Rotor at maximum
engine speed (3700 RPM). This information will aid the technician in determining if the
Generator Field is operating properly.
MATERIALS NEEDED
Volt/Ohmmeter
3/8” Nutdriver
Wiring Diagram
ROTOR VOLTAGE TEST
TROUBLESHOOTING AND REPAIR
F-13 F-13
BULLDOG® 140
WARNING
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