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 258 of 1205
TM 9-2320-387-24-l
REFERENCE INFORMATION
ALTERNATOR
If the engine doesn’t start on its own
power, you should check the battery
and starter circuits.
A charged battery in good condition is a
prerequisite
for testing an alternator/regulator
system. If battery is suspect, substitute a known
good battery in the vehicle.
Alternators
have a large stud on side of
housing
as
output terminal to connect wire 6.
i
NOTES
Check the wiring and the pins at pins E 8 F at PCB
engine connector.
Check the wiring and the pins at pins D 8 G at PCB
body connector.
Check and clean starter solenoid and battery box
power stud.
Check and clean battery cables and clamps.
Look for loose, dirty, or broken connections
and repair
as necessary.
If terminal voltage is still low, harness
should be replaced. Notify DS maintenance
(chapter 16).
NOTES ON IDLE ADJUSTMENT
If idle can be adjusted to within limits, go to step 5.
If idle CANNOT be adjusted to within limits, you
may have a problem with the fuel system.
You can
either continue here or run the fuel system tests
and return here.
ENGINE
RPM
STEXE-R
TEST
10
1. Start Test 10, Engine RPM.
2. Crank or start the engine. Displayed
reading is
RPM.
Cranking rpm should be at least 100.
Idle rpm should be 625-675.
.I
,
DC VOLTAGE
O-45 VOLTS
STEWE-R
TEST
89
1. Connect RED clip to the indicated test point,
BLACK clip to negative or ground.
2. Start Test 89, DC Volts.
3. Displayed reading is in volts.
BATTERY
VOLTAGE
STEIICE-R
TEST
67
I
1. Start Test 67, Battery Voltage.
2. Displayed reading is in volts.
Batteries should be
23-25.5 volts.
Battery voltage will drop when
glow plugs turn on.
2-203
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