GUARD ASSEM. (INNER L.H.) 1M7796 - Caterpillar

Table 2
Associated Diagnostic Trouble Codes    
J1939 Code     CDL Code    
94     E1218    
5580     E198    
Table 3
Troubleshooting Test Steps    Values    Results    
2. Check the Fuel Level in the Fuel Tank
A. Check the fuel level in the fuel tank.
   
Fuel Level    
Result: The fuel level is acceptable.
Proceed to Test Step 3.
Result: The fuel level is not acceptable.
Repair: Fill the tank. Verify that the problem has been resolved.
If the problem has not been resolved, proceed to Test Step 3.
   
Illustration 1 g02041759
Fuel supply lines for inspection
Illustration 2 g02163246
Cooling line from fuel high-pressure pump to injectors
Illustration 3 g02041781
Fuel return line to be inspected
Table 4
Troubleshooting Test Steps    Values    Results    
3. Inspect the Fuel Supply Lines
A. Visually inspect the fuel lines between the priming pump and the inlet to the cylinder head. Also, inspect the fuel cooler (if equipped) for dirt, debris, or damage. Inspect the fuel return line from the head to the fuel tank. Inspect the lines for restrictions, pinching, and swelling. Refer to Systems Operation/Testing and Adjusting, "Fuel System - Inspect" for additional information.
B. Inspect the fuel cooler for dirt, debris, or damage.
   
Fuel Supply Lines    
Result: The fuel lines and the cooler (if equipped) are OK.
Proceed to Test Step 4.
Result: The fuel lines and the cooler (if equipped) are not OK.
Repair: Replace damaged fuel lines and/or fuel cooler. Remove dirt or debris from fuel cooler fins. Verify that the problem has been resolved.
If the problem has not been resolved, proceed to Test Step 4.
   
Illustration 4 g02338019
Fuel cooler
Illustration 5 g03764302
(1) Fuel temperature sensor
Table 5
Troubleshooting Test Steps    Values    Results    
4. Replace the Temperature Sensor
A. Replace fuel temperature sensor (1) .
B. Check for active codes or logged codes.
   
Fuel Temperature Sensor    
Result: A E363 or 174 code is active or logged.
Proceed to Test Step 5.
Result: A E363 or 174 code is not active or logged. Return the unit to service.
   
Illustration 6 g02041973
(2) Fuel return pressure regulator
Table 6
Troubleshooting Test Steps    Values    Results    
5. Replace the Fuel Return Pressure Regulator
A. Replace the fuel return pressure regulator (2) . Verify that the problem has been resolved.
   
Fuel Pressure Regulator    
Result: The problem has been resolved. Return the unit to service.
Result: The problem has not been resolved.
Proceed to Test Step 6.
   
6. Perform a Fuel System Verification Test
A. Perform a "Fuel System Verification Test" in Cat ET.
   
Fuel System verification Test    
Result: The "Fuel System Verification Test" was not successful.
Repair: Replace the identified injectors. Verify that all trim files are installed into the ECM correctly. Refer to Troubleshooting, "Injector Trim File - Install". Repeat the "Fuel System Verification Test" after making the necessary repairs. Repeat the process until all the injectors are operating properly.
Result: The "Fuel System Verification Test" was successful. Return the unit to service..