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 - Page 41 of 736
TM 9-2815-225-34&P
0004 00
0004 00-5
ENGINE TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. EXCESSIVE OIL
CONSUMPTION
a. Check for external leaks.
b. Check turbocharger oil seals.
c. Check for worn, stuck, or broken
piston rings.
d. Check for worn piston(s) and
cylinder liner(s).
e. Check for cracked piston.
a. Tighten external oil connections
and replace damaged gasket(s).
b. Replace turbocharger oil seals
(WP 0026 00 and WP 0027 00).
c. Replace piston rings
(WP 0018 00).
d. Install new pistons and cylinder
liners (WP 0012 00).
e. Replace damaged piston
(WP 0012 00).
12. EXCESSIVE ENGINE
VIBRATION
a. Check for loose or worn engine
insulators.
b. Check for loose or worn cab
insulators.
c. Check for burned valves.
d. Check for excessive flexdisk and
ring gear runout.
e. Check for loose flexdisk and ring
gear mounting screws.
f. Check for loose flywheel housing
screws.
g. Check for misalignment of
flywheel housing.
h. Check for unbalanced flexdisk
and ring gear.
i. Check for loose vibration damper.
j. Check for unbalanced vibration
damper.
k. Check adjustment of valves and
injectors.
l. Check timing for air compressor.
m.Check for incorrect injection
timing.
a. Replace mounts
(TM 9-2320-283-34).
b. Replace insulators
(TM 9-2320-283-34).
c. Replace valves (WP 0014 00).
d. Correct flexdisk and ring gear
runout (WP 0042 00).
e. Tighten flexdisk and ring gear
mounting screws (WP 0042 00).
f. Tighten flywheel housing screws
(WP 0042 00).
g. Align flywheel housing
(WP 0042 00).
h. Replace the flexdisk and ring
gear (WP 0013 00 and
WP 0042 00).
i. Tighten vibration damper screws
(WP 0042 00).
j. Install new vibration damper
(WP 0042 00).
k. Adjust valves and injectors
(WP 0043 00).
l. Adjust air compressor timing
(WP 0042 00).
m.Adjust injector system timing
(WP 0042 00).
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