CONTROL & MTG GP-MACHINE 1262972 - Caterpillar

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 or death can result from improperly checking for a leak.Always use a board or cardboard when checking for a leak. Escaping air or fluid under pressure, even a pin-hole size leak, can penetrate body tissue causing serious injury, and possible death.If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorized personnel that have the correct training.Before beginning any work on the fuel system. Refer to Operation and Maintenance Manual, "General Hazard Information and High Pressure Fuel Lines" for safety information.Refer to Systems Operation, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during all work on the fuel system.
To service the common rail fuel system, the fuel that is under high pressure must be released. Depending on conditions, the fuel system may hold high rail pressure for potentially up to several hours or even days.To release the pressure in the fuel rail, use the following steps:
Loosen the end plug on one of the last two accumulators on the rail by one full turn using hand tools only. Once the end plug is loosened by one full turn. The fuel pressure will drop and the high-pressure fuel will escape into the double wall fuel line. The fuel will return to the high-pressure fuel junction block, relieving the pressure in the system.
Verify the "Fuel Rail Pressure" in Cat ET is between 0-2MPa (0-290 psi).
After the pressure has been released, the end-plug should be retightened to 60 N m (44 lb ft).
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