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General| Engine Type | Diesel |
|---|---|
| Power Output | 350-505 hp |
| Torque | 1250-1850 lb-ft |
| Fuel System | High Pressure Common Rail |
| Aspiration | Turbocharged |
| Aftertreatment | SCR, DPF |
| Fuel | Diesel |
| Configuration | Inline 6-Cylinder |
| Emission Standards | EPA 2017, GHG17 |
| Displacement | 12.8L |
| Emissions Compliance | EPA 2017, GHG17 |
Manual's purpose and scope for Detroit™ engine operation and maintenance.
Warning about using non-genuine or rebuilt components for emissions compliance and warranty.
Engine work should only be performed by skilled and instructed technicians.
Unauthorized modifications affect safety, performance, and emissions compliance.
Lists and defines common acronyms and abbreviations used throughout the manual.
Manual provides instructions on safe operation, preventive maintenance, and safety.
Heed cautions and notices for personal safety and engine longevity.
Cautions for operating the engine safely, including personal injury and vehicle control.
Safety regarding exhaust fumes, engine shutdown override, and engine brake usage.
Cautions for maintenance tasks and avoiding ether use with grid heaters.
Safety regarding hot surfaces, moving parts, and fluid leaks.
Cautions for used engine oil and cleaning agents.
Cautions for rotating parts, hot coolant, fire hazards, and compressed air.
Clean up spilled liquids immediately to prevent slipping and falling.
Cautions for servicing cooling, electrical, and air intake systems.
Safety for oil changes, fuel system work, and aftertreatment system servicing.
Cautions for high-pressure fuel circuits and mixing fuels.
Safety regarding heated diesel vapors and ventilation.
Overview of engine components for the GHG17 Medium Duty Platform.
Views and major components of the Detroit™ DD5 engine.
Information on major components of the Detroit™ DD8 engine.
Explanation of the fourteen-digit engine model and serial number.
Perform essential system checks before the first engine start.
Procedures for checking the engine's cooling system before initial start.
Steps for checking and monitoring the engine oil level.
Ensure proper fuel system operation and best practices for adding fuel.
Step-by-step guide for starting the engine safely and correctly.
Special precautions for fuel, oil, coolant, and batteries in cold weather.
Information on the use and impact of winter fronts on engine operation.
Explanation of DDEC software, its role in performance, and power supply issues.
How the DDEC system operates, including voltage, AWL, and reduced RPM.
Using the override switch and understanding immediate speed reduction.
Conditions triggering the RSL and DDEC system fault storage.
Procedure for adjusting the engine idle speed using cruise control switches.
How the Stop Engine Override Option records activations and its purpose.
How the engine brake works and cautions for its safe use.
How ABS interacts with the engine brake system.
How the engine protection system monitors faults and triggers warnings/shutdowns.
Engine idling regulations in California and applicable exemptions.
Optional system to conserve fuel by limiting excessive idling.
Components of the fuel system, including DDEC, pumps, and filters.
Components of the lubrication system, including oil pump, cooler, and filter.
How outside air enters, is compressed, cooled, and delivered to cylinders.
Description of the radiator/thermo-modulated fan cooling system.
Components of the electrical system, including starter, alternator, and batteries.
How exhaust gas is used to drive the turbocharger.
Function and components of the EGR system for reducing NOx emissions.
Description of the airless dosing system, DOC, DPF, SCR, DEF tank, etc.
DEF requirement for SCR system, composition, and purpose.
Where DEF can be purchased in bulk and containers.
Standards DEF must meet for emissions control.
Guidelines for storing DEF and its shelf life.
How the diagnostic system detects tampering and its consequences.
Requirements for ATD operation to avoid damage and maintain warranty.
Indications of system problems and need for service.
Step-by-step instructions for performing a parked regeneration.
Conditions that stop regeneration and return the engine to idle.
Mandatory record-keeping for particulate filter servicing for warranty.
Indicates a fault with engine controls; vehicle can be driven, call for service.
Indicates a major engine fault requiring immediate attention and potential derate/shutdown.
Indicates when a DPF regeneration is required or needs immediate attention.
Indicates high exhaust temperature and driving/service conditions.
Indicates an emission control device failure; vehicle can be driven.
Indicates a restricted fuel filter needing service.
Indicates the fuel water separator is full and needs draining.
How the four-light bar indicates DEF level and performance impacts.
Driver actions for SOLID and FLASHING HEST lamp indications.
Driver actions when the MIL illuminates, including calling for service.
Driver actions for DPF regeneration lamp indications.
Combined indications of DPF limits and engine derate.
Warnings for DPF limits exceeded, engine shutdown, and required actions.
Guide to preventive maintenance intervals for engine longevity and performance.
Determining correct maintenance schedule application based on vehicle use.
Importance and basic steps for maintaining the engine cooling system.
Wear protective clothing and remove cap slowly to avoid scalding from hot coolant.
Importance of valve lash for performance/emissions; adjustment by authorized facility.
Inspection and replacement of drive belts, considering wear factors.
Description of the prefilter and final filter in the two-filter system.
Inspecting the air cleaner restriction indicator and air system for leaks.
Replacing air cleaner elements based on restriction and daily checks.
Periodic removal of accumulated ash from the DPF is necessary.
Measures to prevent fuel tank problems like condensation and microbe growth.
Periodic inspection and replacement of the vibration damper.
Maintenance intervals for DD5 engines in Short Haul service applications.
Maintenance intervals for DD5 engines in Long Haul service applications.
Maintenance intervals for DD5 engines in Severe Service applications.
Maintenance intervals for DD8 engines in Short Haul service applications.
Maintenance intervals for DD8 engines in Long Haul service applications.
Maintenance intervals for DD8 engines in Severe Service applications.
Describes items in maintenance interval tables and daily instructions.
Daily procedures for checking and maintaining engine oil level.
Procedures for replacing oil filters and checking oil lines.
How to check and maintain the engine cooling system level.
Daily visual checks for coolant leaks when engine is running and stopped.
Replenishing corrosion inhibitors and using supplemental coolant additives.
Importance of valve lash for performance/emissions; adjustment by authorized facility.
Periodic inspection of belts for damage and wear.
Inspecting air system connections, hoses, and ducting for leaks and damage.
Periodic removal of accumulated ash from the DPF is necessary.
Measures to prevent fuel tank problems like condensation and microbe growth.
Visual check for fuel leaks at engine-mounted lines and tank connections.
Visual inspection for leaks, noise, vibration, and debris.
Checking battery cases, clamps, terminals, and connections.
Procedure and precautions for steam cleaning the engine compartment.
Precautions when working on the alternator and inspection steps.
Recommended oils and API classifications for optimal performance.
Step-by-step guide for changing engine oil and replacing the oil filter.
Recommendations for diesel fuel quality and selection for optimal performance.
Importance of filter maintenance and steps for replacing fuel filters.
Procedure for priming the fuel system after running out of fuel.
Procedure for priming the fuel system using the hand primer pump.
Procedures for power cleaning the engine, including safety and distances.
Steps for cleaning and flushing the cooling system, including coolant disposal.
Information on selecting and maintaining engine coolants.
Requirements, permitted, and prohibited coolants for Detroit™ engines.
Definitions of common terms related to antifreeze and coolants.
Information on coolant types, mixing, and water requirements.
Product numbers and descriptions for Detroit™ coolant and maintenance items.
Information on the network of Detroit™ service outlets for parts and service needs.
Importance of chemical balance in the cooling system.
Part numbers and sizes for Detroit™ Extended Life Coolants.
Detroit Genuine Supplemental Coolant Additive Need Release Filters.
Detroit Genuine Cooling System Cleaners.
Detroit Genuine Fluid Testing and Analysis Products.
Capacities for DD5 and DD8 engines; consult distributor for oil filters.
