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 206 of 1205
TM
9-2320-387-24-l
COMPRESSION / MECHANICAL
KNOWN INFO
t
DIAGNOSTIC
FLOWCHART
-
T OPTIONS
STEIICE-R TEST 10 (Page 2490)
NOTHING
DOES THE ENGINE CRANK AT
NORMAL SPEED?
POSSIBLE
PROBLEMS
REASON FOR QUESTfON
No cranking or slow cranking
may indicate a seized or tight
engine, weak baneties
or a bad
starter circuit.
ENGINE
FUEL SYSTEM
INTAKE/EXHAUST
BATTERY CIRCUIT
STARTER CIRCUIT
LUBRICATION
I
KNOWN INFO
T OPTIONS
BATTERY CIRCUIT OK
STARTER CIRCUIT OK
ENGINE NOT SEIZED
DOES THE VEHICLE START ?
FOLLOW NORMAL
STARTING
PROCEDURE.
REASON
FOR QUESTION
If the engine starts, then most of the
fuel system is ok and the
intake/exhaust
system is probably
ok.
POSSIBLE
PROBLEMS
FUEL SYSTEM
ENGINE
INTAKE/EXHAUST
4
3
IS THE ENGINE OIL PRESSURE
40-45 PSI (276-310
kPa)
AT
2,000 RPM AND THE ENGINE
WARM ?
1
KNOWN INFO
iT OPTIONS
1. OIL PRESSURE
GAUGE
2. STEIICE-R
TEST 50 (Page 2495
1
BATTERY CIRCUIT OK
STARTER CIRCUIT OK
ENGINE NOT SEIZED
AIR AND FUEL TO
CYLINDERS
REASON
FOR QUESTION
Without proper oil pressure, the
engine won’t be lubricated
property.
POSSIBLE
PROBLEMS
LUBRICATION
ENGINE
FUEL SYSTEM
INTAKE/EXHAUST
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