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.
Gen 5 DD Platform Operators Manual
All information subject to change without notice.
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