Hobart 100D20 Operation And Maintenance Manual With Illustrated Parts List page 95

OM-2032 / Operation and Maintenance Manual
100D20 / Generator Sets
c. Hold one ohmmeter lead point on the threaded end of the diode. Hold the other lead point
on the wire terminal end. Observe and note the indicated resistance. Now reverse the lead
connections on the diode. Again observe and note the ohmmeter indicated resistance. If an
infinite or very high resistance is indicated with the leads connected one way and a low,
readable resistance was indicated with the leads connected the opposite way, the diode
may be considered good.
March 31/94 Revised Chapter 2-3
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