Rectifier Test - Mercury 30 Service Manual

Rectifier Test

WARNING
Disconnect battery leads from battery before
testing rectifier.
NOTE: Rectifier can be tested without removing from
engine.
1. Disconnect all wires from terminals on rectifier.
2. Use an ohmmeter (R x 1000 scale) and perform
the following test. Refer to drawing for rectifier
terminal identification.
Rectifier Test (continued)
Continuity Indicated
Connect black meter lead to ground, red lead
alternately to terminals "a" and "c".
No Continuity Indicated
Connect black meter lead to terminal "b", red
lead alternately to terminals "a" and "c".
Continuity Indicated
Connect red meter lead to terminal "b",
black lead alternately to terminals "a"
and "c".
No Continuity Indicated.
Rectifier tests O.K.
2B-8 - ELECTRICAL
Connect red meter lead to ground, black lead alternately
to terminals "a" and "c".
Continuity Indicated.
Replace Rectifier.
No Continuity Indicated.
Replace Rectifier.
No Continuity Indicated.
Replace Rectifier.
Continuity Indicated.
Replace Rectifier.
a
b
e
a - Terminal
b - Terminal
c - Terminal
d - Stator Terminals
e - Positive Terminal
f - Ground
No Continuity Indicated
Connect black meter lead to ground, red lead
alternately to terminals "a" and "c".
Connect black meter lead to terminal "b", red
lead alternately to terminals "a" and "c".
Continuity Indicated.
Replace Rectifier. Connect red meter lead to terminal "b",
black lead alternately to terminals "a"
and "c".
No Continuity Indicated.
Replace Rectifier.
d
c
07300
Continuity Indicated
No Continuity Indicated
Continuity Indicated.
Rectifier Tests O.K.
90-826148R2 MARCH 1997
f