
(Table 23, contd)
Troubleshooting Test Steps
Values
Results
4. Air Intake and Exhaust System
A. Check the air filter restriction indicator.
B. Ensure that the air filter is clean and serviceable
C. Check the air intake and exhaust systems for the following
defects:
·
Blockages
·
Restrictions
·
Damage to lines or hoses
Defects
Result:
A defect was found in the air intake or exhaust
system.
Make any necessary repairs.
Attempt to start the engine. If the engine will not start, pro-
ceed to Test Step 5.
Result:
No defects found in the air intake or exhaust
systems.
Proceed to Test Step 5.
5. Fuel System Inspection
A. Check that the fuel shut-off valve is in the OPEN position.
B. If the temperature is below 0 °C (32 °F), check for solidified
fuel (wax).
C. Check for fuel supply lines that are restricted.
D. Check that the low-pressure fuel lines are correctly installed.
E. Check the pressures in the fuel system. Refer to Systems
Operation, Testing, and Adjusting, “Fuel System Pressure -
Test”
F. Check the diesel fuel for contamination. Refer to Systems
Operation, Testing, and Adjusting, “Fuel Quality - Test”.
G. Check for air in the fuel system. Refer to Systems Opera-
tion, Testing, and Adjusting, “Air in Fuel - Test”.
H. Ensure that the fuel system has been primed. Refer to Sys-
tems Operation, Testing, and Adjusting, “Fuel System - Prime”.
Fuel System
Result:
A defect was found in the fuel system.
Make any necessary repairs.
Attempt to start the engine. If the engine will not start, pro-
ceed to Test Step 6.
Result:
No defects found.
Proceed to Test Step 6.
6. Fuel Filters
A. Replace the primary fuel filter and the secondary fuel filter.
Refer to the Operation and Maintenance Manual, “Fuel System
Primary Filter (Water Separator) Element - Replace”.
B. Attempt to start the engine.
Engine start
Result:
The engine starts.
Return the engine to service.
Result:
The engine does not start.
Proceed to Test Step 7.
Contact with high pressure fuel may cause fluid
penetration and burn hazards. High pressure fuel
spray may cause a fire hazard. Failure to follow
these inspection, maintenance and service in-
structions may cause personal injury or death.
UENR0612
57
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