Table 2. Fuel System Troubleshooting Procedures - continued

TM 9-2320-361-24-1

0008 00

MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)

Table 2. Fuel System Troubleshooting Procedures (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

1. NO FUEL AT FUEL

INJECTORS (Contd)

Air entering fuel delivery lines may

block fuel flow. Air can enter lines

when fittings are loose or lines or

fittings are defective. This is

indicated by leaking fuel.

1. If fuel injector nozzle operation is

2. Check operation of fuel injector

incorrect, clean, adjust, and retest

nozzle. Remove fuel injector

(TM 9-2815-210-34-1 and -2).

(WP 0067 00) and bench test fuel

2. If fuel injector nozzles are

injector nozzle

internally defective, replace

(TM 9-2815-210-34-1 and -2).

(WP 0067 00).

If fuel delivery lines are leaking or

3. Check fuel delivery lines mounted

restricted, tighten lines or fittings,

on, and from, fuel injection pump

repair fuel delivery lines, or replace

(WP 0068 00).

fittings (WP 0068 00). Bleed air from

fuel injection system (WP 0064 00).

If no fuel flows from outlet port of

4. Check fuel supply pump operation

fuel supply pump, replace fuel supply

(TM 9-2910-226-34).

pump (TM 9-2910-226-34).

a. Clean dirt, grease, and paint

from fuel delivery line fitting at

the final fuel filters, which are

mounted in fuel supply pump.

b. Operate in-tank fuel pump and

crank engine.

c. Observe the green port of fuel

supply pump.

5. Check fuel injection pump delivery If some traces of fuel, or no fuel

pressure is evident, replace fuel

operation.

injection pump (WP 0069 00).

a. Loosen one injector line nut in

hydraulic head.

b. Operate in-tank fuel pump and

crank engine.

c. Observe location of loose

injector line nut in hydraulic

head.

0008 00-15