- On-highway Engine:
- C13 (S/N: LEE1-UP)
- C15 (S/N: SDP1-UP; B5R1-UP)
- Remove the pilot and main fittings that contain an in-line fuel filter from the fuel manifold. Install 136-8543 Connector and 6V-8641 Connector .
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Table 1 Connector assemblies for C15 and certain C13 engines 136-8543 Connector 6V-8641 Connector 6V-8397 O-Ring Seal 3J-1907 O-Ring Seal 8T-6850 O-Ring Seal 4J-5477 O-Ring Seal Show/hide tableTable 2 Certain C13 connector assemblies 136-8543 Connector Connector assembly for 313-3642 Elbow As 6V-8397 O-Ring Seal 6V-8627 Elbow 8T-6850 O-Ring Seal 3J-1907 O-Ring Seal 4J-5477 O-Ring Seal
| NOTICE |
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IMPORTANT: Do not use anti-seize or any other substance on the threads of the fittings. |
- Reattach fuel lines to the fittings that were installed in Step 1. Do not attach fuel lines to the ARD head at this time.
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| Illustration 1 | g01664633 |
(1) Location of the in-line fuel filters on C15 applications | |
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| Illustration 2 | g01664635 |
(2) Location of the in-line fuel filters on certain C13 applications | |
- Route the hoses to an approved container for fuel that can hold a minimum of 3 gal for fuel storage on the ground in order to catch the fuel that is flushed.
Note: Two to three gal of fuel will be flushed in this procedure. Ensure that the container that is used to catch the fuel is adequately sized.
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| Illustration 3 | g01732116 |
Locations for attaching the two sections of hose | |
Note: Some configurations of the chassis with C13 engines may require loosening the nut on the clamp pictured below in order to allow clearance for installing the hoses and clamps listed above.
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| Illustration 4 | g01664653 |
(3) Location of the nut that may require loosening on the chassis of some C13 applications | |
- Start the engine and perform the "Fuel System Flush" in Caterpillar Electronic Technician (ET).
- Go to "Diagnostics" on the tool bar.
- Select "Diagnostics Test".
- Select "System Troubleshooting Settings".
- Select the "ARD Fuel Line Flush".
- Change the value from OFF to ON.
Note: Turn the flush value on and off in order to help dislodge any debris that is in the system.
- Start the "ARD Fuel Line Flush" and run the test for 30 seconds. Change the parameter from the ON position to OFF position. Wait for 5 seconds. Turn the parameter back to the ON position. Flush the line for another 30 seconds. Repeat this ON and OFF procedure a minimum of six times. Caterpillar Electronic Technician (ET) will display "Complete" part of the way through this procedure. Change the parameter to the Disable position and then change the parameter back to the ON position in order to restart the test.
Summary of the Flush Cycle
- Fuel flows for 30 seconds
- Fuel does not flow for 5 seconds.
- Fuel flows for 30 seconds
- Fuel does not flow for 5 seconds.
- Fuel flows for 30 seconds
- Fuel does not flow for 5 seconds.
- Fuel flows for 30 seconds
- Fuel does not flow for 5 seconds.
- Fuel flows for 30 seconds
- Fuel does not flow for 5 seconds.
- Fuel flows for 30 seconds
- The first flush stage is completed.
Note: Turn the flush test on and off in order to help dislodge any debris that is in the system. Two to three gal of fuel will be used during the flush procedure.
- Fuel flows for 30 seconds
- After you have completed the "ARD Fuel Line Flush" test, stop the engine and then replace the pilot and main fittings that were installed in Step 1 with fittings that contain an in-line fuel filter in the fuel manifold. Install fuel lines on the new fittings, but do not install the fuel lines on the ARD head.
Refer to the Disassembly and Assembly Manual, RENR9706.
- Start the engine and perform the "ARD Fuel Line Flush" in Caterpillar Electronic Technician (ET). Change the flush parameter to the ON position and allow the fuel to flow for 30 seconds.
Note: Approximately one quarter to one half of a gallon of fuel will flow during this process.
Second Stage Flush Procedure
- Fuel flows for 30 seconds
- End of second stage flush procedure
- Fuel flows for 30 seconds
- Remove 5P-0767 Hoses from the ARD fuel lines at this time.
- Install the fuel lines to the ARD combustion head.
The proper torques for the fittings that are on both ends of the lines are the following:
ARD Pilot fuel line fitting ... 20 N·m (15 lb ft)
ARD Main fuel line fitting ... 13 N·m (10 lb ft)
Pilot fuel line to pilot connector ... 26 N·m (19 lb ft)
Main fuel line to main connector ... 43 N·m (32 lb ft)