BEARING 6L7967 - Caterpillar

Illustration 2 g03507107
Table 6
4. Check for Electrical Power at the ARD Fuel Pump
A. Turn the keyswitch to the ON position. Do not start the engine.
B. Establish communication between Cat ET and the ECM. Select "Fuel Priming Command Override" or use the manual priming switch (if equipped) in order to activate the ARD fuel pump. Refer to Troubleshooting, "Cat ET Service Features" for information about service features.
C. Check for voltage between pin 1 and pin 2 on the connector to the fuel priming pump. Check the voltage while the pump is in override. Voltage is not present unless the pump is priming.
D. Deactivate the override.
E. Turn the keyswitch to the OFF position.
F. Check the voltage at the battery.
   
Voltage within 3 VDC of the battery voltage
   
Result: The voltage at the ARD fuel pump is within 3 VDC of the battery voltage.
Proceed to Test Step 5.
Result: The voltage at the ARD fuel pump is not within 3 VDC of the battery voltage.
Refer to the machine troubleshooting schematic in order to troubleshoot the circuit for the priming pump. STOP.
   
Illustration 3 g01955253
ARD electric pump (1) Pump (2) Base Assembly
Illustration 4 g02152952
ARD electric pump (3) Output port of the pump
Illustration 5 g02313813
Assembled required parts
Table 7
Troubleshooting Test Steps    Values    Results    
5. Check the Pump
A. Turn the engine "OFF".
B. Disconnect the ARD fuel line from the pump.
C. Install the required parts listed in Table 2 at the outlet port of the pump.
Start the engine.
Select the "Aftertreatment Fuel Pump Relay Override" in Cat ET in order to activate the pump.
Override the pump and record the pressure from the pressure gauge.
Deactivate the override.
Turn the keyswitch to the OFF position.
The pressure must be within specifications. The pump pressure must be
1900 120 kPa (275.5 17.4 psi).
   
1900 120 kPa (275.5 17.4 psi)
    Result: The pump is not within specifications.
Refer to Troubleshooting, "ARD Fuel Supply - Test" for troubleshooting information. STOP.
Result: The pump is within specifications.
If you are troubleshooting an E1052 (2) or 3480-18 diagnostic code, proceed to Test Step 7. If you are troubleshooting a E1053 (2) or 4077-18 diagnostic code, proceed to Test Step 8.
Result: The pump is within specifications.
If you are troubleshooting a E1052 (1) or 3480-17 diagnostic code or a E1053 (1) or 4077-17 diagnostic code with an ETI of 2 or 3, proceed to Test Step 6.
   
Illustration 6 g02220573
CEM (typical) (4) Fuel filter fitting
Table 8
Troubleshooting Test Steps    Values    Results    
6. Replace the Filter for the ARD Fuel Manifold
A. Replace the filter for the ARD fuel manifold.
B. Reset all active codes and clear all logged codes by cycling the keyswitch to the Off position.
C. Perform the "ARD Ignition Test" by using Cat ET. Refer to System Operation and Testing and Adjusting, "ARD Fuel System - Test".
The ARD Ignition Test cannot be performed if the DPF soot loading is above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.
   
Filter replacement
    Result: The "ARD Ignition Test" was successful and