TM 10-4320-344-24
Table 2-4. Unit Troubleshooting Table. (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. ENGINE STOPS SUDDENLY. (Continued)
Step 7.
Inspect fuel lines for damage or leakage.
a.
Tighten loose fuel line connections.
b.
Replace damaged fuel lines (paragraph 2.21.2).
Step 8.
Visually inspect to see if drain plug on primary filter is leaking or
missing or if primary fuel filter is clean.
Replace primary fuel filter (paragraph 2.21.4/2.21.5).
Step 9.
Disconnect outlet line on fuel transfer pump. Using manual pumping
lever, check to see if enough fuel is being pumped.
a .
If not enough fuel is being pumped, replace fuel transfer pump
(paragraph 2.21.6).
b .
If enough fuel is being pumped, notify direct support maintenance.
Step 10. Using multimeter, set to 200 ohms cale, check connections between fuel
solenoid valve and alternator for continuity. (Model 609-A)
If reading is 1 ohm or less, go to step 11.
If reading is more than 1 ohm, replace connection (paragraph 2.17).
Step 11.
Disconnect diode and wires to solenoid fuel coil.
Using multimeter,
set to 200 ohm scale, check solenoid fuel coil.
(Model 609-A)
If reading is between 5 and 6 ohms, go to step 12.
If reading is not between 5 and 6 ohms, notify direct support
maintenance.
Step 12. Connect diode and wires to starter solenoid. Using multimeter, set to
200 ohm scale, check starter solenoid continuity.
a .
If reading is 15 ohms or less, go to step 13.
b .
If reading is more than 15 ohms, replace starter (paragraph 2.21.18).
Step 13. Check for open fuel solenoid.
Disconnect diode and check for
continuity, using a multimeter, across pins 1 and 2.
(Model 609-C)
If an open exists, replace solenoid (paragraph 2.20.20).
If an open does not exist, replace engine protection system module
(paragraph 2.16.31).
c .
Notify direct support maintenance.
Step 14. Check dipstick for low oil in engine.
Refer to LO 10-4320-344-12 and add oil as necessary.
Step 15.
Check oil pressure switch for open contacts.
Using multimeter, check
for open between switch terminal and case ground.
(Model 609-C)
Replace oil pressure switch (paragraph 2.21.20).
If switch is good, replace engine protection system module (paragraph
2 .
16 . 3 1 ).
c .
Notify direct support maintenance.
2-33
a.
b.
a.
b.
a.
b.
a.
b.
