TM-9-2320-280-20-1
TRUCK, UTILITY: M998 SERIES
TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 1 OF 3
JANUARY 1996
TM-9-2320-280-20-1 - Page 303 of 888
2-218.2
Change 2
TM 9-2320-280-20-1
ALTERNATOR
DIAGNOSTIC FLOWCHART
GO TO E5,
Page 2-220
TEST OPTIONS
Visual
REASON FOR QUESTION
Fusible link connects
alternator output stud to
wire 6.
E4
CHECK FOR BURNED OR BROKEN
REVERSE POLARITY FUSIBLE
LINK ON ALTERNATOR OUTPUT
STUD. IS FUSIBLE LINK OK?
NO
YES
REPLACE
FUSIBLE LINK.
THEN GO TO STEP 5,
Page 2-198
KNOWN INFO
VOLTAGE OUTPUT
INCORRECT
POSSIBLE PROBLEMS
FUSIBLE LINK
WIRING
ALTERNATOR
REGULATOR
TEST OPTIONS
Visual
REASON FOR QUESTION
Determine if connections are
good at alternator and
starter.
E3
STOP ENGINE. CHECK WIRE 6 AT
ALTERNATOR AND STARTER FOR
LOOSENESS OR CORROSION.
ARE TERMINAL CONNECTIONS
OK?
NO
YES
CLEAN AND
SECURE TERMINAL
CONNECTIONS.
KNOWN INFO
Voltage Output
Incorrect
POSSIBLE PROBLEMS
Fusible Link
Wiring
Alternator
Regulator
FROM E2,
Page 2-218
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