Routine Preventive Maintenance Inspection of the Fuel System The fuel system should be inspected periodically. A good practice is to include the fuel system inspection as part of the pre-start inspection. Inspect the fuel and fuel tanks as follows: 1. Inspect all engine-mounted lines and connections for leaks. 2. Visually inspect the fuel tank suction and return lines. Check for an accumulation of fuel under the tank. NOTE: If any of the above conditions exist, it may be necessary to take the vehicle to an authorized Detroit™ service outlet. NOTICE: Keep the fuel tank filled to reduce condensation. Before adding fuel, Refer to section "How to Select Fuel".
Condensation formed in a partially filled tank promotes the growth of microorganisms that can clog fuel filters and restrict fuel flow. 3. The water/sediment at the bottom of the fuel tank should be serviced as recommended in the maintenance tables using the appropriate engine duty cycle, Refer to section "Preventive Maintenance Tables". 4. The fuel tank mounts should be inspected as recommended in the for the appropriate engine duty cycle, Refer to section "Preventive Maintenance Tables". Fuel Filter Replacement All engine mounted fuel filters should be changed at the same time. If the fuel is contaminated contact an authorized Detroit™ service outlet for further instructions.
After replacing the fuel filters, the fuel system will require priming. Priming the fuel system includes the use of special tools. Authorized Detroit™ service outlets are properly equipped for this type of service. Never use the starting motor and fuel pump to prime the fuel system. Prolonged use of the starting motor and fuel pump to prime the fuel system can result in damage to the starter, fuel pump, and injectors. Inspection of Hoses and Fittings for Leaks Inspection of Hoses and Fittings for Leaks All hoses, lines and connection points should be inspected periodically. A good practice is to include the hoses, lines and connection point inspection as part of the pre-start inspection.
Leaks are not only detrimental to mechanical operation, but they can also result in added expense caused by the need to replenish lost fluids. Inspect hoses and fittings for leaks as follows: 66 All information subject to change without notice. Copyright © 2022 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0217