TM-9-2320-283-34-1
TRUCK TRACTOR, LINE HAUL, 50,000 GVWR, 6X4, M915A1
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1983
TM-9-2320-283-34-1 - Page 175 of 624
TM 9-2320-283-34-1
ELECTRICAL SYSTEM.
3-21.
ALTERNATOR AND RECTIFIER REPAIR (Continued).
LOCATION/ITEM
ACTION
REMARKS
C.
TESTING (Continued)
18. Negative rectifier
a. Connect negative lead (B)
Set ohmmeter at
assembly (26)
of ohmmeter to heat sink
R X 10,000.
on item (26).
b. Touch positive lead (A) of
ohmmeter to each of three
terminals on item (26),
one at a time.
c. A high resistance should
be indicated at all three
terminals.
If not, item
(26) is shorted and must
be replaced.
d. Reverse ohmmeter test
Set ohmmeter at
leads so positive lead (A)
R X 10,000.
is connected to heat sink
on item (26).
e. Touch negative lead (B) to
all three terminals on
item (26) one at a time.
f.
A low resistance should be
indicated at all three
terminals
If not, item
(26) is open and must be
replaced.
3-122
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