GHG17 DD Medium Duty Operators Manual NOTICE: Do not allow the air inlet restriction to exceed maximum allowable restriction. Table 19. A clogged air cleaner element will cause excessive air intake restriction and reduced air supply to the engine resulting in increased fuel consumption, inefficient engine operation, aftertreatment failure and reduced engine life. High intake restriction will also cause oil pullover from the turbocharger into the charge air system. Inspect the entire air system for leaks daily. Look especially for torn air inlet piping or boots and loose or damaged clamps. Have worn or damaged parts repaired or replaced. Retighten loose connections.
Air Cleaner Replacement - Dry type air cleaner elements should be replaced when the maximum allowable air intake restriction has been reached. Air-to-Air Charge Cooler - Periodically inspect the air-to-air charge cooler for buildup of dirt, mud, etc. and wash off using a mild soap solution. Check the charge cooler, ductwork, and flexible connections for leaks and have repaired or replaced, as required. Exhaust System The exhaust manifold retaining bolts and other connections should be inspected for leaks. The exhaust pipe rain cap, if so equipped, should be checked for proper operation.
With the introduction of an Aftertreatment system, the sealing of the exhaust system is critical and should be inspected regularly. Air Compressor The air compressor incorporates three of the major systems of a diesel engine (air, lubrication, and coolant). Proper inspection of air compressor would include inspecting for air, oil, and coolant leaks. Due to inadequate internal sealing, air compressors, when failed, can produce excessive crankcase pressure or allow an engine to ingest oil. Aftertreatment System (ATS) There is a need to periodically remove accumulated ash, derived from engine lube oil, from the filter.
This ash does not oxidize in the filter during the regeneration process and must be removed through a cleaning procedure. All Detroit™ ATS- equipped engines will illuminate a dashboard warning lamp indicating the need for ash cleaning. All information subject to change without notice. 59 DDC-SVC-MAN-0192 Copyright © 2017 DETROIT DIESEL CORPORATION Air Cleaner Restriction GHG17 Medium Duty Platform 4.5 kPa (18 in. H2O)