GHG17 DD Medium Duty Operators Manual Preventive Maintenance Intervals Preventive Maintenance Intervals The following guide establishes preventive maintenance intervals. These recommendations should be followed as closely as possible to obtain long life and optimum performance from your engine. When performed on a regular basis, changing the engine oil, coolant, and filters is the least costly way of obtaining safe and reliable vehicle operation. Added benefits and savings occur when you check that the valves, fuel injectors, oil and cooling circuits are in good working order during oil changes. The intervals shown apply only to the maintenance functions described.
These functions should be coordinated with other regularly scheduled maintenance. Scheduled Maintenance Intervals Before placing your new vehicle in service, determine the correct maintenance schedule application for your intended use of the vehicle. Schedule Use Complete each maintenance operation at the required interval. The intervals are based on a collaboration of field and fleet data.
For a more accurate analysis of when fluids should be changed, such as engine oil, refer to DDCSN for publication Engine Requirements; Lubricating Oil, Fuel and Filters (DDC-SVC-BRO-0001) and publication Coolant Selections for Detroit™ Engines (DDC-SVC-BRO-0002), available from authorized Detroit™ distributors and dealers. Each maintenance table shows which maintenance operation must be performed at the recommended interval (in miles, kilometers, and hours). NOTE: Failure to maintain the coolant at required concentrations will result in severe damage to the engine cooling system and related components. Refer to the "Coolant Selections and Maintenance" section.
Cooling System Flush and Fill Coolant Flush and Fill - Proper maintenance of the cooling system is vital to its performance and longevity. The cooling system must, on a constant basis, deal with cavitation, temperature / pressure swings, and continuous threats on the additive package. Once the additives have been depleted from the coolant, it will only be a matter of time until the engine components suffer. Refer to section "Cooling System Fill Procedure". Cooling System Inspection - Inspect the cooling system as follows: All information subject to change without notice. 57 DDC-SVC-MAN-0192 Copyright © 2017 DETROIT DIESEL CORPORATION