CYLINDER PACK AS 20R0194 - Caterpillar

High-Pressure Fuel Lines
Illustration 1 g06169497Double-Skinned Fuel Lines
Illustration 2 g06283563Fuel System
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 instructions may cause personal injury or death.
Personal injury can result from removing hoses or fittings in a pressure system.Failure to relieve pressure can cause personal injury.Do not disconnect or remove hoses or fittings until all pressure in the system has been relieved.
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 instructions may cause personal injury or death.
Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over any disconnected fuel system components.
These fuel lines are different from fuel lines on other fuel systems because of the following items:
The high-pressure fuel lines are constantly charged with high pressure.
The internal pressures of the high-pressure fuel lines are higher than other types of fuel system.
The high-pressure fuel lines are formed to shape and then strengthened by a special process.Note: Do not step on the high-pressure fuel lines. Do not deflect the high-pressure fuel lines. Do not bend or strike the high-pressure fuel lines. Deformation or damage of the high-pressure fuel lines may cause a point of weakness and potential failure.
Do not bend or strike high pressure lines. Do not install bent or damaged lines, tubes or hoses. Repair any loose or damaged fuel and oil lines, tubes and hoses. Leaks can cause fires. Inspect all lines, tubes and hoses carefully. Tighten all connections to the recommended torque.
Note: High-pressure fuel lines may be installed between the high-pressure fuel pump and the fuel injectors. High-pressure fuel lines are constantly charged with high pressure. Do not check the high-pressure fuel lines with the engine or the starting motor in operation. Wait for 10 minutes after the engine stops before you perform any service or repair on high-pressure fuel lines. Waiting for 10 minutes will allow the pressure to be purged.Note: Do not loosen the high-pressure fuel lines to remove air from the fuel system. This procedure is not required.
Visually inspect the high-pressure fuel lines before the engine is started. This inspection should be each day.If you inspect the engine in operation, always use the proper inspection procedure to avoid a fluid penetration hazard. Refer to this Operation and Maintenance Manual, “General Hazard Information.
Inspect the high-pressure fuel lines for damage, deformation, a nick, a cut, a crease, or a dent.Note: Do not operate the engine with a fuel leak. If there is a leak, do not tighten the connection to stop the leak. The connection must be tightened to the recommended torque. Refer to Disassembly and Assembly, “Fuel Injection Lines - Remove and Install”.Note: If the high-pressure fuel lines are torqued correctly and the high-pressure fuel lines are leaking, the high-pressure fuel lines