MULTIMETER 2952618 - Caterpillar

Safety Precautions
Electrical shock hazard. The electronic unit injector system uses 90-120 volts.
This service procedure requires the valve cover to be removed. This will expose the service technician to to moving parts which may case pinch or entanglement hazards. The hazards could result in personal injury or death. Keep all body parts, loose clothing, hair, and other items which could become entangled away from the moving parts.
Be sure the engine cannot be started while this maintenance is being performed. To prevent possible injury, do not use the starting motor to turn the flywheel.Hot engine components can cause burns. Allow additional time for the engine to cool before measuring/adjusting the unit injectors.The electronic unit injectors use high voltage. Disconnect the unit injector enable circuit connector in order to prevent personal injury. Do not come in contact with the injector terminals while the engine is running.
Specifications
Table 1
Torque Specifications    
Location     Torque    
Bolt that holds the unit injector in place     55 10 N m (41 7 lb ft)    Introduction
This procedure assists in identifying the cause for an injector misfiring. Perform this procedure only after performing the Cylinder Cutout Test. Refer to Troubleshooting for more information.Required Tools
Typical Hand Tools
Table 2
458-3562     Tool As     1    Test Preparation
Remove the pertinent covers to expose the electronic unit injectors.Test Procedures
Check for air in the fuel, if this procedure has not already been performed. Refer to Testing and Adjusting, "Air in Fuel - Test".
Remove the valve cover and look for broken parts. Repair any broken parts or replace any broken parts that are found. Inspect all wiring to the solenoids. Look for loose connections. Also look for frayed wires or broken wires. Ensure that the connector for the unit injector solenoid is properly connected. Perform a pull test on each of the wires. Refer to Troubleshooting, "Electrical Connectors - Inspect".
Check the valve lash setting for the cylinder of the suspect unit injector. Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust".
Ensure that the bolt that holds the unit injector is tightened to the proper torque. If necessary, loosen the bolt that holds the unit injector and tighten the bolt to a torque of 55 10 N m (41 7 lb ft).
Remove the suspect unit injector and check the unit injector for signs of exposure to coolant. Refer