TM-9-2815-225-34-P

ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

JULY 2005
TM-9-2815-225-34-P

  TM-9-2815-225-34-P - Page 39 of 736

TM 9-2815-225-34&P
0004 00
0004 00-3
ENGINE TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. ENGINE STOPS
a. Check if engine is overheated.
b. Check for loose fuel solenoid wire
and defective fuel solenoid valve.
c. Check for faulty fuel pump.
a. See malfunction 6.
b. Replace fuel solenoid valve
(WP 0033 00).
c. Replace fuel pump (WP 0010 00).
5. ENGINE FAILS TO STOP
a. Check for stuck fuel solenoid
valve.
b. Check for turbocharger oil seal
leak in compressor end.
a. Replace fuel solenoid valve
(WP 0033 00).
b. Replace compressor oil seal
(WP 0026 00 and WP 0027 00).
6. ENGINE OVERHEATS
Check for leaking or noisy water
pump.
Repair water pump (WP 0041 00).
7. EXCESSIVE EXHAUST
SMOKE
a. Check for incorrect injector
adjustment.
b. Check for defective fuel
injector(s).
c. Check for blocked fuel return line
in fuel system.
d. Check for improperly seated
valves.
e. Check for incorrect injection
timing.
a. Adjust injectors (WP 0044 00).
b. Replace defective fuel injector(s)
(WP 0011 00).
c. Repair fuel return line
(TM 9-2320-283-20).
d. Reseat or replace valves
(WP 0014 00).
e. Adjust injection system timing
(WP 0042 00).
8. LOW OIL PRESSURE
a. Check pressure regulator
b. Check for spun camshaft
bushing.
c. Inspect oil pump gasket.
d. Check for worn camshaft.
e. Check for worn crankshaft.
f. Inspect main bearings.
g. Inspect connecting rod bearings.
h. Inspect oil pump gears.
i. Check for high oil temperature.
j. Check for worn crankshaft.
a. Free up pressure regulator or
replace oil pump (WP 0010 00).
b. Replace camshaft bushing
(WP 0013 00).
c. Replace gasket (WP 0023 00).
d. Replace camshaft (WP 0013 00).
e. Replace crankshaft and install
new bearings (WP 0012 00).
f. Replace main bearings
(WP 0012 00).
g. Replace connecting rod bearings
(WP 0012 00).
h. Repair oil pump (WP 0023 00).
i. Inspect and clean oil cooler
(WP 0021 00).
j. Repair crankshaft (WP 0016 00).


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