HOSE AS 3966936 - Caterpillar

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.
Cleanliness is an important factor. The exterior of the engine should be thoroughly cleaned before the removal procedure. Ensure the area around the Fuel Manifold and the Fuel Lines are thoroughly cleaned. This will prevent contaminants from entering the internal mechanism. Before replacing any Fuel Lines, follow the instructions that are listed below. Replace the Fuel Lines with the correct Fuel Lines Group.
Replace Nonmetallic Fuel Lines
Make sure that the nonmetallic fuel lines are replaced at the engine overhaul.
Illustration 1 g02141035
Top view of engine
Note: The following procedures were written for only specific fuel lines that need replacing. Only remove the fuel lines and clamps that need replacement.Removal Procedure
Turn the fuel supply to the OFF position.
Turn the battery disconnect switch to the OFF position.
Remove the rear two low-pressure fuel lines (1).
Remove the front two low-pressure fuel lines (2). Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Install hose clamps which have been inspected or install new hose clamps. Refer to Specifications, SENR3130, "Torque Specifications", "Hose Clamps" for information about selecting and installing the proper hose clamps.
Install the rear two low-pressure fuel lines (1) with new hoses.
Install the front two low-pressure fuel lines (2) with new hoses. Note: Make sure that the hoses do not contact nearby components. Excessive contact with other surfaces will produce chafing that could lead to a leak.
Carefully inspect the engine for any spilled fuel. Make sure that no fuel remains on or close to the engine.
Turn the battery disconnect switch to the ON position.
Turn the fuel supply to the ON position. Note: Fuel must be added to the fuel system ahead of the fuel filter.
Refill the fuel system. Refer to this Operation and Maintenance Manual, "Fuel System - Prime" for information about priming the engine with fuel.
Start the engine. Inspect the fuel system for leaks.