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 171 of 1205

TM 9-2320-387-24-l

REFERENCE INFORMATION

FUEL SYSTEM

When using a multimeter to measure current through

wire 84A. disconnect the wire. Set the ammeter to a

scale of at least 5 amps DC. Connect the red lead of

the multimeler to wire 84A and the black lead to

ground. With the rotary switch in the RUN position.

measure current. Be sure to read the correct scale.

Return the switch to the STOP position. Disconnect

the multimeter and reconnect wire 84A.

FUEL

SUPPLY

PRESSURE

(PSI)

STEIICE-R

TEST 24

1. Select Fuel Supply Pressure Test (Test 24).

Perform CAL.

2. Crank (or start) engine.

FUEL PUMP VOLUME TEST

1. Disconnect fuel line at injection pump inlet and

route fuel line into a suitable, 1 quart container.

2. Crank the engine for 30 seconds.

3. If the pump and lines are ok, you should get

about 1 pint (l/2 quart) (8 L) in 30 seconds.

-1

1.

2.

WARNING

Diesel fuel is highly

flammable.

Do not perform

any procedures

near fire, flames,

or sparks.

Severe

injury

or death will result.

Disconnect the return line and

direct it into a suitable container.

Watch the fuel flow from the

return line as you or an assistant

try to start the engine.

DC CURRENT 0 - 45 VOLTS

STVICE-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.

.

FUEL PUMP PRESSURE

TEST

PRESSURE

GAUGE

1. Connect a tee into the fuel line between the

fuel filter outlet and the injection pump inlet.

2. Attach gauge to tee.

3. Crank (or start) engine.

FUEL SOLENOID

WIRE:89B

2-111