Mercury 40 Service Manual page 84

RECTIFIER TEST (OPTIONAL ACCESSORY
FOR 9 AMP STATOR)
WARNING
Disconnect battery leads from battery before
testing rectifier.
Rectifier can be tested without removing from
NOTE:
engine.
Disconnect all wires from terminals on rectifier.
1.
Use an ohmmeter (R x 1000 scale) and perform
2.
the following test. Refer to drawing for rectifier
terminal identification
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.
90-852572R1 JANUARY 1998
.
Connect red meter lead to ground, black lead alternately
to terminals "a" and "c".
Continuity Indicated.
Replace Rectifier.
No Continuity Indicated.
No Continuity Indicated.
Replace Rectifier.
Continuity Indicated.
Replace Rectifier.
a
b
a - Terminal
b - Terminal
c - Terminal
d - Stator Terminals
e - Positive Terminal
f - Ground
Connect black meter lead to ground, red lead
alternately to terminals "a" and "c".
Replace Rectifier.
Continuity Indicated.
Replace Rectifier.
No Continuity Indicated.
Replace Rectifier.
d
e
No Continuity Indicated.
Continuity Indicated.
Connect black meter lead to terminal "b", red
lead alternately to terminals "a" and "c".
No Continuity Indicated
Connect red meter lead to terminal "b",
black lead alternately to terminals "a"
and "c".
Continuity Indicated.
Rectifier Tests O.K.
ELECTRICAL - 2B-9
c
f
07300