Preventive Maintenance Intervals Aftertreatment System (ATS) A Check Engine Indicator or mileage/time intervals indicate when ash cleaning is required. Use DETROIT Diesel Corporation's authorized DPF cleaning procedure. Failure to follow this procedure could result in engine and/or aftertreatment damage, causing degraded vehicle performance including excess fuel consumption and decreased engine life. Once the DPF has reached maximum ash volume, the recommended service for the DPF is to remove the DPF and replace with a Reliabilt® clean DPF.
Using alternate cleaning methods, instead of replacing the DPF at the required interval, may result in the cleaned DPF failing to reach the next ash clean interval. The aftertreatment may experience damage to the DOC, DPF or SCR assemblies as a result of alternate cleaning methods. Cleaning accumulated ash from the DPF is a necessary part of vehicle maintenance. The DEF filter is considered a maintenance item and will require periodic maintenance. The aftertreatment system should be serviced per estimated maintenance intervals, Refer to section "Preventive Maintenance Tables".
Air Compressor The air compressor incorporates three of the major systems of a diesel engine (air, lubrication, and coolant). Proper inspection of the air compressor includes inspecting for air, oil, and coolant leaks. A failed air compressor can create inadequate internal sealing resulting in excessive crankcase pressure, or allowing an engine to ingest oil. The air compressor should be inspected per the maintenance intervals, Refer to section "Preventive Maintenance Tables".
Air System The air cleaner restriction indicator (filter minder) should be inspected per the maintenance intervals, Refer to section "Preventive Maintenance Tables", or more often if the engine is operated under severe dusty conditions. Replace the air filter if the filter minder has reached maximum allowable restriction. Do not allow the air inlet restriction to exceed maximum allowable restriction. A clogged air cleaner element will cause excessive air intake restriction and reduced air supply to the engine resulting in increased fuel consumption, inefficient engine operation, aftertreatment failure, and reduced engine life.
High intake restriction will also cause oil pullover from the turbocharger into the charge air system. The air system should also be periodically inspected for leaks. Leaks in the air system can cause dirt ingestion into the engine, performance problems, or aftertreatment failure. Belt Drive 50 All information subject to change without notice. Copyright © 2022 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0217