2.1. EEM4 general instructions

Warning

The fuel pressure in the EEM4 system is continuously at a hazardous level during operation.

This applies to the high pressure pump, the fuel line from the high pressure pump to the common rail, the rail itself, the fuel lines from the rail to the injectors, the injectors and all components attached to any of the above mentioned parts, including sensors, valves, etc.

DO NOT TRY TO OPEN OR REMOVE ANY OF THE FUEL SYSTEM COMPONENTS DURING CRANKING OR ENGINE RUNNING.

DO NOT TRY TO START THE ENGINE WITH ANY OF THE FUEL SYSTEM COMPONENTS REMOVED.

The fuel pressure in the EEM4 system is also at a hazardous level after engine shutdown

After engine shutdown the fuel pressure is reduced from 2000bar to 800bar.

800bar is a hazardous pressure and the maintenance should be performed only by qualified injection system service personnel.

During vehicle or engine service and repair, please observe the following recommendations:

• Disconnect the EEM4 controller main connectors before electric welding (or other operation using high electrical current).
• Cover the EEM4F controller, sensors and connectors during a high pressure wash or the application of a strong cleaning solvent.
• Avoid heavy wash and high pressure spray directly on the electrical components.

The EEM4 system consists of several different types of components. For faultless system operation all these components must be 100% functional.

All EEM4 components are well protected, but to avoid even the smallest risk to these components, it is recommend to follow the instructions above.