Preventive Maintenance Intervals Incorporated into the fuel filter module is a coalescer. The coalescer removes water and/or sediment .Water in fuel can seriously affect engine performance and may cause engine damage. A water-in-fuel (WIF) dash indicator will warn the driver when trapped water needs to be drained. For instruction on how to drain the fuel coalescer, Refer to section "How to Drain the Fuel Coalescer". Lubricating Oil and Filter Detroit™ Gen 5 Heavy Duty engines are equipped with a single cartridge-style oil filter that is part of the oil coolant module.
Incorporated into the module is a drain back port which allows residual oil to be returned to the oil pan when the filter is removed. This design, including the cartridge-style element, allows for a more environmentally safe oil change. The lubricating oil and filter should be replaced per the maintenance intervals, Refer to section "Preventive Maintenance Tables". Valve Lash Checking and Adjustment Valve lash adjustments should be performed by an authorized Detroit™ service outlet. Proper valve lash clearance allows the engine to produce the best possible performance with the lowest emissions.
Valve lash checking and adjustment should be serviced per the maintenance intervals, Refer to section "Preventive Maintenance Tables". Vibration Damper The vibration damper should be inspected periodically and replaced if dented or leaking. Heat from normal engine operation may, over a period of time, cause the fluid within the damper to break down and lose its dampening properties. For this reason, the vibration damper must be replaced at time of a major engine overhaul, regardless of apparent condition. Preventive Maintenance Tables Preventive Maintenance Tables Service interval definitions using 93K222(CK-4) and 93K223(FA-4) oil with ULSD fuel:
Efficient Long Haul Efficient Long Haul (over-the-road transport) service applies to vehicles that annually travel more than 96,000 km (60,000 mi) and average greater than 7 miles per gallon with minimal city stop-and-go operation and minimum idle. 52 All information subject to change without notice. Copyright © 2022 DETROIT DIESEL CORPORATION DDC-SVC-MAN-0217