COVER 4370127 - Caterpillar

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 engine valve lash clearance.
Refer to Systems Operation, Testing and Adjusting, SENR5816, "3054 Engine " for the correct procedures when you check engine valve lash and/or injector Fuel Timing.
The procedures for engine valve lash should be performed according to the information in the Service Manual.Refer to the Service Manual or your Caterpillar dealer for the complete valve adjustment procedure.
The procedures for engine valve lash should be performed according to the information in the Service Manual.Operation of Caterpillar engines with improper valve adjustments will reduce engine efficiency. This reduced efficiency could result in excessive fuel usage and/or shortened engine component life.
Note: Make sure that qualified service personnel check the injector Fuel Timing. If an adjustment is necessary, make sure that qualified service personnel adjust the injector Fuel Timing. Special tools and training are required.Note: The correct Fuel Timing specification is shown on the Engine Information Plate. Fuel timing specifications will be different with each engine application and with each power rating.Consult your Caterpillar dealer for the complete adjustment procedure.