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 187 of 624
TM 9-2320-283-34-1
ELECTRICAL SYSTEM.
3-21.
LTERNATOR AND RECTIFIER REPAIR (Continued).
LOCATION/ITEM
ACTION
REMARKS
C.
TESTING (Continued).
24. Transformer
a. Using ohmmeter, check for
assembly (62).
continuity in item (62)
windings.
Touch one test
lead to terminal (A) and
other lead to terminal
(B).
Ohmmeter should read
zero.
If not, replace item
(62).
b. Touch one ohmmeter test
lead to item (62) terminal
(A) and other lead to ter-
minal (C).
Ohmmeter should
read infinity.
If not,
replace item (62).
c. Touch one ohmmeter test
lead to item (62) terminal
(B) and other test lead to
terminal (C).
Ohmmeter
should read infinity.
If
not, replace item (62).
d. Using ohmmeter, check for
grounds between all five
terminals and item (62)
housing.
Ohmmeter should
read infinity at all five
terminals, (A), (B), (C),
(D), and (E).
If not,
replace item (62).
e. Connect ohmmeter positive
test lead to positive ter-
minal (D) of item (62) and
negative test lead to nega-
tive terminal (E).
Infinity
reading should be indicat-
ed.
If not, replace item
(62).
f.
Reverse ohmmeter test
leads.
A low resistance
reading should be indicat-
ed.
If not, replace item
(62).
3-134
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