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 42 of 736

TM 9-2815-225-34&P
0004 00
0004 00-6
ENGINE TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12. EXCESSIVE ENGINE
VIBRATION (Contd)
n. Check for excessive flywheel
runout.
o. Check for unbalanced flywheel or
one or more injectors not
performing properly.
n. Correct flywheel runout
(WP 0042 00).
o. Replace flywheel (WP 0042 00)
or replace faulty injectors
(WP 0043 00).
13. ENGINE
WILL NOT IDLE
a. Check fuel pump idle setting.
b. Check for improperly assembled
governor spring.
c. Check for stuck governor spring
plunger.
d. Check for plugged governor
barrel.
a. Adjust idle setting (WP 0044 00).
b. Assemble governor spring
correctly (WP 0037 00).
c. Free governor spring plunger
(WP 0037 00).
d. Clean governor barrel
(WP 0037 00).
14. FUEL LEAKS
AT FUEL PUMP
OR INJECTOR
a. Check for faulty seals and
O-rings in fuel pump.
b. Check for mutilated injector
O-rings.
c. Check for faulty fuel filter
gasket.
a. Install new seals and O-rings
(WP 0033 00).
b. Replace injector mounting
O-rings (WP 0039 00).
c. Replace gasket (WP 0039 00).
15. ENGINE DOES NOT
DEVELOP FULL
POWER
a. Check for damaged turbocharger.
b. Check for improperly adjusted
valves and injectors.
c. Check for worn or scored fuel
pump components.
d. Check for dirty fuel injector(s).
e. Check for scuffed cylinder liners.
f. Check for incorrect injection
timing.
g. Check for plugged electric shutoff
(solenoid) valve.
h. Check for plugged fuel pump
throttle control shaft.
i. Check for burned valves.
j. Check for plugged Air Fuel
Control (AFC) breather
(check valve).
a. Repair turbocharger
(WP 0026 00 and WP 0027 00).
b. Adjust valves and injectors
(WP 0043 00).
c. Repair fuel pump (WP 0033 00).
d. Clean fuel injector(s)
(WP 0032 00).
e. Replace cylinder liners
(WP 0013 00).
f. Adjust injection system timing
(WP 0042 00).
g. Clean electric shutoff valve
(solenoid) (WP 0034 00).
h. Clean or replace fuel pump
throttle control shaft
(WP 0040 00).
i. Reface or replace valves and
valve seats (WP 0014 00).
j. Replace AFC breather
(WP 0040 00).


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