d. Check the engine oil level. If the engine oil level
is normal, go to Step 3. If the engine oil level is
low, go to Step 2. If the engine oil level is high,
go to Step e.
e. Report to Unit Maintenance that the machine is
overheating and has a possible internal coolant
leak.
2. Low engine oil or power train oil level:
a. Check the engine oil level. If the engine oil level
is normal, go to Step c. If the engine oil level is
low, go to Step b.
b. Fill the crankcase with the appropriate type of
engine oil, and go to Step c.
c. Check the power train oil level. If the power train
oil level is normal, go to Step 3. If the power
train oil level is low, go to Step d.
d. Fill power train with the appropriate type of oil,
and go to Step 3.
3. Cooler cores blocked:
a. Inspect the fins of the cooler cores for debris. If
debris is found, go to Step b. If no debris is
found, go to Step c.
b. Clean the debris from the cooler cores, and go
to Step c.
c. Look for evidence of debris in the coolant. If
rust, dirt, or a green slime is present, go to Step
d. If the coolant is not contaminated, go to Step
4.
d. Report the contamination to Unit Maintenance
for repair.
4. Cooling fan not operating:
a. Inspect the cooling fan. If the cooling fan is not
operating, go to Step c. If the cooling fan is
operating, go to Step b.
b. Listen to the speed of the cooling fan when the
coolant temperature is greater than 100°C
(212°F). Allow the engine to cool to 90°C (194°F)
or less, and listen to the fan speed. If the fan
speed sounds the same, go to Step c. If the fan
speed is noticeably slower, go to Step 5.
c. Report to Unit Maintenance that the machine is
overheating, and possibly has a cooling fan
problem.
5. Restriction in exhaust system:
a. Inspect the exhaust system for restrictions. If
restrictions are found, go to Step b. If no
restrictions are found, go to Step 6.
b. Report the location of the restrictions to Unit
Maintenance for repair.
6. Water to antifreeze ratio too high for operating
environment:
If operating in a hot climate with a high
concentration of antifreeze, inform Unit
Maintenance that the machine is overheating
during normal operation.
Problem 6: Greater-Than-Normal Fuel
Consumption
Probable Cause(s):
• Restriction in air intake system
• Fuel leak
• Incorrect or poor quality fuel
1. Restriction in air intake system:
a. Check the air filter indicator. If red does not
appear in the window, go to Step 2. If red
appears in the window, go to Step b.
b. Clean the primary air filter element, and go to
Step 2.
2. Fuel leak:
Diesel fuel is combustible. Do not smoke when
working around diesel fuel. Open flames or
sparks can cause a fire or explosion.
The fuel supply lines contain high pressure fluid.
Do not use hands to inspect for fuel leaks. High
pressure fluid can penetrate skin.
a. Inspect the fuel system for visible leaks. If leaks
are found, go to Step b. If no leaks are found,
go to Step 3.
WARNING
!
92
Operation Section
Troubleshooting
TM5-2430-200-10
