TM-9-2320-387-24-1
TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1
DECEMBER 1997
CHANGE 1
TM-9-2320-387-24-1 - Page 301 of 1205
TM 9-2320-387-24-l
BATTERY
CIRCUIT
I
KNOWN INFO
I
BATTERY
RESISTANCE
NO GOOD
1
POSSIBLE
PROBLEMS
1
BATTERIES
CABLES
KNOWN INFO
BATTERIES
OK
POSSIBLE
PROBLEMS
CABLES
lB*
IS EACH BAlTERY
RESISTANCE
LESS THAN 25 MILLIOHMS AND
EACH BATTERY RESISTANCE
CHANGE LESS THAN 50
MILLIOHMS/SECOND
?
DIAGNOSTIC
FLOWCHART
1
TEST OPTIONS
1. REARRANGE
BATTERY BOX
TO TEST ONE BATTERY.
2. RUN STEIICE-R
TESTS 73.75.
(Pages 2-502,2-6&l).
REASON
FOR QUESTlON
If either resistance reading is too
high, the batteries are probably
weak and may not produce
enough power.
r
82
1
CHECK THE VOLTAGE DROP
ACROSS ALL CABLES IN THE
BAll-ERY
BOX (SEE NOTE AT
RIGHT) AND THE POSITIVE AND
NEGATIVE CABLES TO THE
STARTER.
ARE ALL VOLTAGE
DROPS LESS THAN 0.25 VOLT?
ITEST
I
OPTIONS
1. STEIlCE-R
TEST 69
(Page 2-506)
2. STEIlCE-R
TEST 74 (STARTER
CIRCUIT
RESISTANCE)
OR TEST
69 (NEGATIVE
CABLE DROP) OR
TEST 66 (STARTER MOTOR.
VOLTAGE)
(Pages 2-503,2-496,
2-497)
3. MULTIMETER
REASON
FOR QUESTION
Everything
else has checked OK.
These cables are the only thing in
the battery circuit we haven’t
tested.
1
I
NO
FAULTS FOUND.
(IF YOU USED TESTS 73 & 75 IN
STEP 4, P. 2-240, YOU MAY HAVE
A PROBLEM WITH THE DCA.
CHECK THE DCA CONNECTIONS
AND TRY RUNNING STEP 4
USING TESTS 77 & 79.) SEE
NOTE TO RIGHT.
2-244
Back to Top
