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 193 of 1205
TM 9-’ ‘70-387-24-l
REFERENCE INFORMATION
FUEL SYSTEM
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i
If you are getting white smoke
due to coolant entering the cylinders.
you should notice a loss of coolant in the radiator or bubbles in the
radiator tank while the engine is running. You may need to fill the
radiator to proper level and recheck a day later to determine if there is
a coolant loss.
If you don’t detect coolant loss, you may have missed a fuel problem.
Rerun the
fuel system tests paying attention for a raw exhaust smell.
If you still find nothing, you may have a small or inconsistant
leak.
Notify OS maintenance
(chapter 14).
0
II
. .
WARNING
Keep hands
away from engine
fan. Moving fan blades can
cause serious injury.
Use
extreme caution when engine
is running.
If
the engine doesn’t shut off with the solenoid
disconnected,
fuel is still reaching the cylinders-
probably because the fuel solenoid is stuck
open. When you squeeze the return line tight
enough to prevent fuel flowing through it, you
create a pressure imbalance inside the injection
pump that will cause the engine to stall.
0
II
.-
:
. .
WARNING
Disconnect
negative battery
cable before disconnecting
and
reconnecting
protective control
box harness.
WARNING
There is battery voltage at the
PCB at all times.
Failure to
disconnect
battery cable will
result in damage to equipment or
injury to personnel.
Remember to reconnect any wires that may
have been disconnected
during
troubleshooting.
Repair/replace
harness (para. 4-90).
Replace PCS (para. 4-4).
INJECTtGN
PUMP
DC VOLTAGE 0-45 VOLTS
STEKE-R
TEST 89
I
1.
Connect
RED clip to the indicated test point,
BLACK clip to negative or ground.
I
2. Start Test 89.
DC Volts.
I
3. Displayed reading is in volts.
BATTERY VOLTAGE
MULTIMETER
1. Set the
voltmeter to a
DC volts scale of at
least
40 volts.
2. Connect the RED
lead to positive and the
BLACK lead to negative.
3. Be sure to read the correct scale.
2-133
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