CIRCUIT BREAKER AS 3T8728 - Caterpillar

Illustration 1 g06330417
Fully open the engine hood. Secondary fuel filters are on the right side of the machine.
Open or remove right side engine panel.
Remove the fuel filters. Dispose of the used filters properly.
Clean the filter mounting base with a clean, nonflammable solvent. Ensure that the O-ring sealing surface is free of debris.
Lubricate the seal of the new fuel filters with clean diesel fuel. Install the new fuel filters hand tight until the seal of the fuel filter contacts the base. Note the position of the index marks on the filter in relation to a fixed point on the filter base.Note: There are rotation index marks on the fuel filter that are spaced 90 degrees or 1/4 of a turn away from each other. When you tighten the fuel filter, use the rotation index marks as a guide.
Tighten the filter according to the instructions that are printed on the filter. Use the index marks as a guide. For non-Caterpillar filters, use the instructions that are provided with the filter.Note: Use a Cat strap wrench to turn the filter. Ensure that the installation tool does not damage the filter.
Do not fill fuel filters with fuel before installing them. Contaminated fuel will cause accelerated wear to fuel system parts.
Prime the fuel system.Reference: Refer to Operation and Maintenance Manual, "Fuel System - Prime" for the correct procedure.
Reinstall the right side engine panel, and fully close the engine hood.