Rectifier Test - Mercury 45 Jet 50-55 Service Manual

Rectifier Test

WARNING
!
Disconnect battery leads from battery before testing
rectifier.
NOTE: Rectifier can be tested without removing from en-
gine.
1. Disconnect all wires from terminals on rectifier.
2. Use an ohmmeter (R x 1000 scale) and perform the fol-
lowing test. Refer to drawing for rectifier terminal iden-
tification.
NOTE: Due to differences in the manufacture of ohm me-
ters, the internal battery polarity may vary from manufac-
turer to manufacturer. As a result, the test readings may be
a direct reversal of those listed. If so, reverse meter leads
and reperform test.
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.
90-817643R1 DECEMBER 1996
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
f
07300
Continuity Indicated
No Continuity Indicated
Continuity Indicated.
Rectifier Tests O.K.
ELECTRICAL and IGNITION - 2B-11