Gen 5 DD Platform Operators Manual Detroit™ Gen 5 Heavy Duty engines utilize a specially designed belt material which is exclusive to the Original Equipment Manufacturer (OEM). Replacement with an aftermarket part may lead to shortened maintenance intervals and excessive noise. Consult with an authorized Detroit™ service outlet to obtain proper engine belts. Drive belts wear differently based on environmental conditions and vehicle duty cycle. If the vehicle is operated in extremely hot or cold climates, or is exposed to significant dust/debris/road salt, the lifetime of the belts may be significantly reduced.
The belts should be replaced per the maintenance intervals, Refer to section "Preventive Maintenance Tables". Cooling System Proper maintenance of the cooling system is vital to its performance and longevity. The cooling system deals with cavitation, temperature and pressure swings, and continuous threats to the additive package. Failure to maintain the cooling system at required concentrations or using coolants that do not meet Detroit™ specifications will result in severe damage to the engine cooling system and related components. The cooling system should be maintained per the maintenance intervals, Refer to section "Preventive Maintenance Tables".
Exhaust System and Exhaust Gas Recirculation (EGR) System The exhaust manifold and other exhaust system connections should be inspected for leaks. The EGR system should be inspected for leaks periodically. Sealing of the exhaust and EGR system is critical. Have worn or damaged parts repaired or replaced. The exhaust and EGR systems should be inspected per the maintenance intervals, Refer to section "Preventive Maintenance Tables". Engine Steam Clean Steam cleaning of the engine is required as part of the preventative maintenance. The engine should be steam cleaned every 100,000 km (60,000 mi) or 2,000 hours, whichever comes first.
Fuel Filters The prefilter is housed within the fuel filter module. The prefilter element filters out large particles and is fastened onto the prefilter cap. The final filter is housed within the fuel filter module. The final filter has the task of separating out the water contained in the fuel and also filtering out small particles. The final filter is fastened onto the final filter cap. Fuel filters should be replaced per the maintenance intervals, Refer to section "Preventive Maintenance Tables". All information subject to change without notice. 51 DDC-SVC-MAN-0217 Copyright © 2022 DETROIT DIESEL CORPORATION