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 44 of 736
TM 9-2815-225-34&P
0004 00
0004 00-8
ENGINE TROUBLESHOOTING (Contd)
Table 1. Engine Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
20. LUBRICATING OIL
DILUTED
a. Check for moisture in crankcase.
b. Check injector for damaged
O-ring.
c. Check for defective injector(s).
d. Check for broken piston.
e. Check for cracked or broken
piston rings.
a. Isolate source and repair as
required.
b. Inspect for tears at head gasket
cylinder openings.
c. Replace injector O-ring
(WP 0032 00).
d. Repair injectors (WP 0032 00).
e. Replace piston (WP 0018 00).
f. Replace broken piston rings
(WP 0018 00).
21. LOW COMPRESSION
a. Check adjustment of valve and
injectors.
b. Check for worn cylinder liners.
c. Check for leaking cylinder head
gasket.
d. Check for worn piston rings.
e. Check for incorrect timing.
f. Check for valves not seating.
a. Adjust valves and injectors
(WP 0043 00).
b. Replace cylinder liners
(WP 0013 00).
c. Replace gasket (WP 0011 00 and
WP 0043 00).
d. Replace piston rings
(WP 0018 00).
e. Adjust injection system timing
(WP 0043 00).
f. Reface valves and seats
(WP 0014 00).
22. ENGINE OVERSPEED
a. Check for improperly adjusted
governor.
b. Check for defective governor or
fuel pump.
a. Adjust governor (WP 0038 00).
b. Repair governor or fuel injection
pump as necessary (WP 0033 00
and WP 0038 00).
END OF WORK PACKAGE
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