Ingersoll-Rand Thermo King SGCM 4000, Maintenance Manual, Page: 135 / 181

Engine Maintenance
134
Maintenance
Contamination is the most common cause of fuel system problems. Therefore, to ensure best operating
results, the fuel must be clean and fuel tanks must be free of contaminants. Change the fuel filter/water
separator regularly and inspect/clean the electric fuel pump filter.
IMPORTANT: Do not open the fuel system unless required.
Whenever the fuel system is opened, take the following precautions to prevent dirt from entering the
system:
1. Cap all fuel lines.
2. Work in a relatively clean area whenever possible.
3. Complete the work in the shortest possible time.
The following procedures can be done under field conditions:
1. Bleeding air from the fuel system.
2. Fuel tank and filter system maintenance.
3. Electric fuel pump replacement or repair.
4. High pressure fuel pump replacement or repair.
5. Injection line replacement.
6. Common (high pressure fuel) rail replacement.
7. Electronic injection nozzles replacement.
Bleeding the Fuel System
If the engine runs out of fuel, repairs are made to the fuel system, or if air gets into the system for any
other reason, the air must be bled out of the fuel system.
To bleed air from the fuel system:
1. Turn the unit on and go to Manual Function Test and select fuel pump test. run pump for 1-2 minutes.
2. Start the engine and observe the engine run for a few minutes. If the engine fails to start, or starts but
stops in a few minutes, repeat the procedure.