Engine Has Early Wear: Shutdown SIS

320 GC Excavator KTN00001-UP (MACHINE) POWERED BY C4.4 Engine(M008523...
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Product: EXCAVATOR
Model: 320 GC EXCAVATOR KTN
Configuration: 320 GC Excavator KTN00001-UP (MACHINE) POWERED BY C4.4 Engine
Troubleshooting
C4.4 Engines
Media Number -UENR0662-34 Publication Date -01/06/2015 Date Updated -29/10/2018
i06010812
Engine Has Early Wear

SMCS - 1000-035; 1200-035
Probable Causes
• Incorrect maintenance intervals and/or incorrect oil
• Contaminated engine oil
• Leaks in air intake system
• Dirt in fuel
• Low oil pressure
Recommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in order.
Table 1
Troubleshooting Test Steps Values Results
1. Incorrect Maintenance Intervals and/or Maintenance Result: The engine oil was not
Incorrect Oil intervals changed at the interval that is
recommended by the Operation
A. Use engine oil that is recommended and and Maintenance Manual.
change the engine oil at the interval that is
recommended by the engines Operation and Repair: Use the recommended
Maintenance Manual. grade of oil.
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisweb/sisweb/... 7/13/2019
320 GC Excavator KTN00001-UP (MACHINE) POWERED BY C4.4 Engine(M008523... Page 2 of 4
Change the engine oil at the

interval that is recommended.
Repair or replace any damaged
parts.
Result: The engine oil was

changed at the interval that is
recommended by the engines
Operation and Maintenance
Manual.
Proceed to Test Step 2.
Result: The oil is contaminated.
Repair: Determine the reason

for any contamination of the
engine oil and make the
necessary repairs. Drain the
crankcase and refill the
crankcase with clean engine oil.
Install new engine oil filters.
Refer to the engines Operation
and Maintenance Manual.
2. Contaminated Engine Oil
Result: The oil filter bypass
A. Obtain an oil analysis. The analysis will
valve is open.
identify oil contamination.
Contamination
Repair: Replace the oil filter
B. Check the oil filter bypass valve.
element. Refer to the Operation
and Maintenance Manual.
Note: If the oil filter bypass valve is open, the
oil will not be filtered.
Check the oil filter bypass valve
for a weak spring or for a broken
spring. If the spring is broken,
replace the spring. Verify that
the oil bypass valve is operating
correctly.
Result: The oil is not

contaminated.
3. Leaks in Air Intake System Air leak Result: There are air leaks.
Note: A leak in the air intake system may Repair: Repair any leaks.
allow unfiltered air into the engine.
Result: There are no air leaks.
A. Inspect the air intake system for streaks
which may indicate a leakage of unfiltered air. Proceed to Test Step 4.
Inspect all of the gaskets and the connections.
Refer to Systems Operation, Testing, and
Adjusting, "Air Inlet and Exhaust System" for
more information.
Result: The fuel has

contamination.
4. Dirt in Fuel
Repair: Determine the cause of
any contamination and make the
A. Remove the fuel filters. Inspect the fuel
necessary repairs.
filters for contamination.
Fuel and fuel
Install new fuel filters. Refer to
Note: Contaminants in the fuel such as filters
the Operation and Maintenance
hydrogen sulfide and sulfur can lead to the
Manual.
formation of acids in the crankcase.
Result: The fuel is not
B. Obtain a fuel analysis.
contaminated.
5. Low Oil Pressure Oil pressure Result: Analysis indicates that

the oil is contaminated.
Note: Engine oil that is contaminated with
another liquid can cause low engine oil Repair: Replace the oil and the
pressure. High engine oil level can be an oil filter. Refer to the Operation
indication of contamination. and Maintenance Manual.
A. Obtain an analysis of the engine oil. Result: The inlet tube has a
restriction.
B. Check the inlet screen on the suction tube
and remove any material that may be Repair: Clear the obstruction.
restricting engine oil flow. Verify the repair.
Note: The inlet screen of the suction tube for Result: The oil pressure is low.
the engine oil pump can have a restriction.
This restriction will cause cavitation and a Refer to Troubleshooting, "Oil
loss of engine oil pressure. Pressure Is Low" for the testing
procedure. Repair any identified
Note: When some components of the engine faults.
show wear in a short time, the cause can be a
restriction in a passage for engine oil. An Result: The oil pressure is

indicator for the engine oil pressure may normal.
indicate sufficient pressure, but a component
is worn due to a lack of lubrication. In such a Contact the Dealer Solutions
case, look at the passage for the engine oil Network (DSN).
supply to the component. Refer to Systems
Operation/Testing and Adjusting,
"Lubrication System" for additional
information.
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320 GC Excavator KTN00001-UP (MACHINE) POWERED BY C4.4 Engine(M008523...

Engine Has Early Wear

• Contaminated engine oil

• Leaks in air intake system

• Low oil pressure

Change the engine oil at the

Result: The engine oil was

Proceed to Test Step 2.

Result: The oil is contaminated.

Repair: Determine the reason

Result: The oil is not

Proceed to Test Step 3.

Result: The fuel has

Proceed to Test Step 5.

5. Low Oil Pressure Oil pressure Result: Analysis indicates that

restriction in a passage for engine oil. An Result: The oil pressure is

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