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 310 of 1205
TM 9-2320-387-24-l
STARTER CIRCUIT
KNOWN INFO
ENGINE
DOESN7
CRANK AT 200 RPM
POSSIBLE
PROBLEMS
BATTERIES
STARTER
NEUTRAL
SAFETY
SWITCH
CABLESWIRING
ENGINE
MECHANICAL
ROTARY SWITCH
PCB
KNOWN INFO
ENGINE
CRANKS SLOWL’
POSSIBLE
PROBLEMS
BATTERIES
STARTER
ENGINE
MECHANICAL
CABLES/CONNECTIONS
KNOWN INFO
BATTERY
VOLTS OK
STARTER
OK
POSSIBLE
PROBLEMS
WEAK BATTERIES
ENGINE
MECHANICAL
CABLES/CONNECTORS
STARTER
DOES THE ENGINE CRANK AT
ALL?
DIAGNOSTIC
FLOWCHART
-
r OPTTONS
LISTEN.
REASON
FOR QUESTION
If the engine cranks, then the
rotary switch, neutral safety
switch and PCB are all working.
IS THE BATTERY VOLTAGE
23-25 VOLTS?
r OPTIONS
1. STEIICE-R
TEST 67
(Page 2496)
2. MULTIMETER
REASON
FOR QUESTION
If batteries are weak, they
can’t provide enough current
to crank the engine property.
OR CHECK EACH
IS THE BAlTERY
VOLTAGE AT
LEAST 18.5 VOLTS DURING
CRANKING?
.
;T OPTIONS
1. STWCE-R
TEST 67 (Page 2496
2. MULTIMETER
REASON
FOR QUESTION
Batteries must be able to
maintain voltage or the engine
won’t crank.
1
1
2-254
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