Do you have a question about the Mack ASET AC and is the answer not in the manual?
Details on how to identify the engine model using the information plate and serial number.
Explains how to locate and identify the engine's serial number stamped on the cylinder block.
Overview of the ASET™ AC engine design, including its exhaust gas recirculation system.
Details on the Current Controlled Rate Shaping (CCRS) and redesigned piston/valve features.
Highlights key features of the ASET™ AC engine, including EGR system and VTG turbocharger.
Description of the EGR valve operation, its hydraulic control, and serviceability.
Explanation of the EGR cooler's function, mounting, and operation.
Details on the VTG turbocharger assembly, its variable position vanes, and available service parts.
Describes the redesigned water pump housing and its impact on coolant flow.
Explanation of the dual thermostat system and revisions made for 2004 models.
Details on the dual poly-V belt drive system, fan drive, and accessory drive components.
Information on valve spring design, rotators, and spring-loaded push rods.
Details on the larger oil pan capacity and improvements in oil filtration.
Description of the EECU, its cooling plate, and the various sensors used.
Overview of the MACK fuel filtration system, including SPIFF and optional filter arrangements.
Explanation of the EUP system, its components, and operation.
Details on the MACK PowerLeash™ and J-Tech™ engine brakes.
Features and operation of the PowerLeash™ engine brake system.
Describes the mechanical operation of the PowerLeash™ engine brake.
Lists the primary components of the MACK PowerLeash™ engine brake system.
Details on rocker arm improvements and features.
Explanation of the low-pressure fuel circuit and its components.
Description of the high-pressure fuel system and its components.
Details on the cylinder block design, material, and construction.
Description of the crankshaft, its features, and lubrication system.
Details on the cast-iron cylinder head construction and features.
Explanation of the gear train design and component interactions.
Information on ASET™ AC engine air compressors and their components.
Description of the front cover design and its mounting provisions.
Details on the crankcase breather filter assembly and its components.
Overview of the engine's lubrication system, galleries, and components.
Details on the oil pump configuration and its drive mechanism.
Description of the lubrication system's oil filters, including Centri-Max® and spin-on types.
Provides a diagnostic guide for common engine symptoms.
Notes on fuel waxing and water in fuel, and reference to V-MAC III Service Manual.
Lists possible causes and corrections for an engine that will not crank.
Troubleshooting steps for when the engine cranks but will not start.
Diagnosing engine misfires when diagnostic codes are present.
Troubleshooting steps for engine misfires without diagnostic codes.
Identifies causes and corrections for engine stalling at low speeds.
Diagnosing and correcting low engine power complaints.
Troubleshooting guide for excessive black or gray smoke from the engine.
Diagnosing and correcting excessive blue or white smoke issues.
Troubleshooting steps for excessive oil consumption.
Diagnosing and correcting engine overheating issues.
Troubleshooting high exhaust temperatures.
Diagnosing and correcting low engine oil pressure.
Troubleshooting steps for low engine compression.
Procedures for checking camshaft timing and lobe lift.
Tests and troubleshooting for the chassis-mounted charge air cooling system.
Procedure for performing a pressure test on the CMCAC system.
Procedure for testing charge air cooler restrictions.
Guidelines for inspecting the CMCAC core for damage and proper flushing procedure.
Procedures for pressure testing cylinder heads and blocks for leaks.
Operational tests and electrical troubleshooting for PowerLeash™ engine brake.
Inspection and adjustment verification for PowerLeash™ brake components.
Guide to common PowerLeash™ engine brake problem conditions and corrections.
Test procedures for the J-Tech™ engine brake.
Troubleshooting steps when the engine brake will not operate.
Procedures for maintaining the engine lubrication system.
Instructions for cleaning the crankcase breather element.
Procedure for checking the engine oil level accurately.
Step-by-step guide for changing engine oil and replacing filters.
Procedure for servicing Centri-Max® ULTRA and ULTRA PLUS oil filters.
Instructions for replacing primary and secondary fuel filter elements.
Procedure for replacing the coolant conditioner element.
Procedure for replacing the oil coalescing air filter.
Instructions for replacing and tensioning drive belts on ASET™ AC engines.
Details on the installation, tensioning, and maintenance of automatic belt tensioners.
General guidelines and steps for removing the engine from the vehicle.
Step-by-step procedures for complete engine disassembly.
Procedure for removing oil filter elements and mounting adapter.
Instructions for removing the dipstick tube from ASET™ AC engines.
Procedure for removing the oil cooler and oil filter mounting bracket assembly.
Steps for removing the oil coalescing air filter assembly and bracket.
Procedure for safely mounting the engine in an engine stand.
Instructions for removing the alternator.
Procedure for removing the EECU and its cooling plate.
Covers removal and installation of EGR gas tubes.
Procedure for removing the EGR cooler assembly.
Steps for removing the EGR mixer tube.
Procedure for removing the thermostat housing.
Instructions for removing external oil supply lines on earlier AC engines.
Description of oil supply arrangements for later AC engines.
Procedure for removing the turbocharger assembly.
Steps for safely removing the crankshaft from the engine block.
Details on cylinder block reconditioning, including special tools.
Procedure for removing piston cooling spray nozzles.
Instructions for removing cylinder sleeves using special tools.
Guidelines for cleaning and inspecting the cylinder block and sleeves.
Procedure for cleaning engine components using solvent.
Procedure for repairing damaged EUP tappet bores.
Steps for cleaning lifter bores and checking lifter fit.
Procedure for removing the camshaft.
Procedure for replacing camshaft bushings.
Instructions for inspecting and cutting cylinder sleeve counterbores.
Procedure for removing the cylinder head assemblies.
Details on the cylinder head gasket design and identification.
Procedure for installing the cylinder heads.
Procedure for replacing 3/4-inch pipe plugs in the cylinder head.
Procedure for installing cylinder sleeves, including shims and sealant.
Instructions for installing the exhaust manifold.
Procedure for installing the flywheel housing.
Guidelines for inspecting and resurfacing the flywheel.
Procedure for installing the flywheel onto the crankshaft.
Steps for removing the flywheel.
Procedure for replacing the injection nozzle holder insert.
Instructions for installing the fuel nozzle inlet tube assemblies.
General information and procedures for the fuel system.
Description of the gear train components and timing marks.
Troubleshooting guide for high exhaust temperatures.
Details on the high-pressure fuel system.
Procedure for replacing H-rings in the lifter bores.
Section covering various engine repair procedures.
Section covering cooling system and EGR system repair procedures.
Section covering engine setup, adjustments, and troubleshooting.
Guide for diagnosing and resolving engine problems.
Provides a diagnostic guide for common engine symptoms.
Lists possible causes and corrections for an engine that will not crank.
Troubleshooting steps for when the engine cranks but will not start.
Troubleshooting steps for engine misfires without diagnostic codes.
Diagnosing and correcting low engine oil pressure.
Troubleshooting steps for low engine compression.
Procedures for checking camshaft timing and lobe lift.
Tests and troubleshooting for the chassis-mounted charge air cooling system.
Procedure for performing a pressure test on the CMCAC system.
Procedure for testing charge air cooler restrictions.
Procedures for pressure testing cylinder heads and blocks for leaks.
Operational tests and electrical troubleshooting for PowerLeash™ engine brake.
Guide to common PowerLeash™ engine brake problem conditions and corrections.
Test procedures for the J-Tech™ engine brake.
Troubleshooting steps when the engine brake will not operate.
Procedure for removing and installing the VTG position control valve.
Procedure for recalibrating the VTG actuating system for proper vane positioning.
Procedure for checking the actuator and vane function.
List of special tools required for ASET™ engine overhaul.
Detailed list of special tools for engine overhaul procedures.
List of special tools required for V-MAC III system diagnostics.
Information on selecting and identifying threaded fasteners.
Details on fastener sizing and types, including U.S. Inch and metric systems.
Guidelines for using torque wrenches accurately.
Information on avoiding repeat turbocharger failures after a replacement.
Procedure for cleaning oil and debris from the charge air cooler.
Steps for cleaning the intake air system after turbocharger failure.
Procedure for pre-lubricating the turbocharger after extended idle periods.