Diode Tests On Ohms X 1000 Position - Craftsman 161.210400 Owner's Manual

Page 17
6. BATTERY REPLACEMENT. When the g volt battery is low, the meter will
not read full scale with the clips open. Replace the battery to
obtain accurate OHMS measurement.
7. IMPORTANT: When the tester is not in use or when Ohms tests are
completed ALWAYS turn the Function Selector Switch OUT of the
Ohms position to prevent battery discharge.
DIODE TESTS ON OHMS X 1000 POSITION
Alternator diodes in a disassembled alternator can be tested for "shorts"
or "opens" with the stator leads disconnected as illustrated. To
facilitate checking the diodes in the end frame and heat sink, place a short
length of wire or nail in the jaws of the RED and BLACK test clips as shown
in the illustration. Touch the RED lead to the diode case and the BLACK
lead to the diode lead as illustrated in Step A and note the meter reading,
Reverse the lead connections on the same diode and again note the reading
as in Step B. A good diode will have one low and one high reading, if
both readings are very low, or if both readings are very high, the diode is
defective and should be replaced.
WHITE PLUG
FIGURE 20
RED
RED
Initial
Connection
STEP
LACK
ALTERNATOR DIODE TESTS