3.
A short in the stator is difficult to detect without
special equipment, because of the low windings
resistance. If all other electrical components test
out good, and alternator fails to produce rated
output, stator probably is shorted and should be
replaced. Also, examine stator for heat discolor-
ation, as this usually is a sign of a short.
2. Using an ohmmeter (set on Rx1 scale), check for
continuity between rectifier terminal and heat
sink. Reverse ohmmeter leads and recheck.
Continuity should be observed in one direction
(polarity) only.
3.
4.
Check other two rectifiers in same manner.
Replace assembly if any of the rectifiers is
shorted or open.
Positive/Negative Rectifier and
Diode-Trio Assembly
IDENTIFICATION
73102
POSITIVE (+) RECTIFIER AND DIODE-TRIO
73100
!
CAUTION
Do not use a test instrument with more than a
12-volt source in the following test, as rectifier
NEGATIVE (–) RECTIFIER
may be damaged.
!
CAUTION
IMPORTANT: Rectifier MUST BE disconnected
from stator for this test.
Do not use a test instrument with more than a
12-volt source in the following test, as rectifier
may be damaged.
!
CAUTION
IMPORTANT: Rectifier MUST BE disconnected
from stator for this test.
Excessive heat from de-soldering may cause
damage to rectifier or diode-trio assembly when
disconnecting leads.
!
CAUTION
1.
Identify the leads prior to removal so they can be
reassembled to their original positions.
Excessive heat from de-soldering may cause
damage to rectifier when disconnecting leads.
2.
Using an ohmmeter (set on Rx1 scale), check for
continuity between rectifier terminal and heat
sink. Reverse ohmmeter leads and recheck.
Continuity should be observed in one direction
(polarity) only.
1.
Identify the leads prior to removal so they can be
reassembled to their original positions.
Index
90-823224--2 796
CHARGING SYSTEM - 4C-33
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you