Rectifier Test - Mercury 75 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 illustration 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 OK.
90-830234R3 DECEMBER 1997
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.
Continuity Indicated.
Replace Rectifier.
a
b
e
a - Terminal
b - Terminal
c - Terminal
No Continuity Indicated.
Connect BLACK meter lead to ground,
RED lead alternately to terminals "a"
and "c".
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".
No Continuity Indicated.
Replace Rectifier.
d
c
f
07300
d - Stator Terminals
e - Positive Terminal
f - Ground
Continuity Indicated.
Rectifier tests OK.
ELECTRICAL - 2B-15