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Mack ASET AC - User Manual

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OCTOBER 2006
(REVISED)
5-111
ASET™ AC
DIESEL ENGINE
SERVICE MANUAL
for Engines with Exhaust Gas Recirculation (EGR)

Table of Contents

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Mack ASET AC Specifications

General IconGeneral
BrandMack
ModelASET AC
CategoryEngine
LanguageEnglish

Summary

VISUAL IDENTIFICATION

ENGINE MODEL IDENTIFICATION

Details on how to identify the engine model using the information plate and serial number.

Engine Serial Number Identification

Explains how to locate and identify the engine's serial number stamped on the cylinder block.

DESCRIPTION AND OPERATION

ENGINE DESIGN FEATURES (ASET ENGINES)

Overview of the ASET™ AC engine design, including its exhaust gas recirculation system.

ASET AC Engine Technologies

Details on the Current Controlled Rate Shaping (CCRS) and redesigned piston/valve features.

ASET AC (CEGR) Engine Features and Components

Highlights key features of the ASET™ AC engine, including EGR system and VTG turbocharger.

EGR Valve

Description of the EGR valve operation, its hydraulic control, and serviceability.

EGR Cooler

Explanation of the EGR cooler's function, mounting, and operation.

Variable Turbine Geometry (VTG) Turbocharger

Details on the VTG turbocharger assembly, its variable position vanes, and available service parts.

COOLING SYSTEM CHANGES

Describes the redesigned water pump housing and its impact on coolant flow.

Dual Thermostat Housing

Explanation of the dual thermostat system and revisions made for 2004 models.

FRONT FAN AND ACCESSORY DRIVE ARRANGEMENT

Details on the dual poly-V belt drive system, fan drive, and accessory drive components.

VALVE SPRINGS, ROTATORS AND PUSH RODS

Information on valve spring design, rotators, and spring-loaded push rods.

INCREASED CAPACITY OIL PAN AND IMPROVED FILTRATION

Details on the larger oil pan capacity and improvements in oil filtration.

ENGINE ELECTRONIC CONTROL UNIT (EECU) AND SYSTEM SENSORS

Description of the EECU, its cooling plate, and the various sensors used.

MACK Fuel Filtration System

Overview of the MACK fuel filtration system, including SPIFF and optional filter arrangements.

Electronic Unit Pumps (EUP)

Explanation of the EUP system, its components, and operation.

Engine Brake

Details on the MACK PowerLeash™ and J-Tech™ engine brakes.

MACK POWERLEASH ENGINE BRAKE FEATURES AND OPERATION

Features and operation of the PowerLeash™ engine brake system.

PowerLeash Mechanical System Operation

Describes the mechanical operation of the PowerLeash™ engine brake.

MACK PowerLeash Engine Brake Components

Lists the primary components of the MACK PowerLeash™ engine brake system.

Rocker Arms

Details on rocker arm improvements and features.

Low-Pressure Fuel System

Explanation of the low-pressure fuel circuit and its components.

High-Pressure Fuel System

Description of the high-pressure fuel system and its components.

Cylinder Block

Details on the cylinder block design, material, and construction.

Crankshaft

Description of the crankshaft, its features, and lubrication system.

Cylinder Head

Details on the cast-iron cylinder head construction and features.

Gear Train

Explanation of the gear train design and component interactions.

Air Compressor

Information on ASET™ AC engine air compressors and their components.

Front Cover

Description of the front cover design and its mounting provisions.

CRANKCASE BREATHER

Details on the crankcase breather filter assembly and its components.

Lubrication System

Overview of the engine's lubrication system, galleries, and components.

OIL PUMP

Details on the oil pump configuration and its drive mechanism.

OIL FILTERS

Description of the lubrication system's oil filters, including Centri-Max® and spin-on types.

TROUBLESHOOTING

ENGINE SYMPTOM DIAGNOSIS FOR MACK ASET ENGINES

Provides a diagnostic guide for common engine symptoms.

V-MAC III Diagnostics

Notes on fuel waxing and water in fuel, and reference to V-MAC III Service Manual.

ENGINE WILL NOT CRANK

Lists possible causes and corrections for an engine that will not crank.

ENGINE CRANKS - WILL NOT START

Troubleshooting steps for when the engine cranks but will not start.

ENGINE MISFIRES - CODE(S) PRESENT

Diagnosing engine misfires when diagnostic codes are present.

ENGINE MISFIRES - NO CODE(S)

Troubleshooting steps for engine misfires without diagnostic codes.

ENGINE STALLS AT LOW SPEEDS

Identifies causes and corrections for engine stalling at low speeds.

LOW POWER

Diagnosing and correcting low engine power complaints.

EXCESSIVE BLACK OR GRAY SMOKE

Troubleshooting guide for excessive black or gray smoke from the engine.

EXCESSIVE BLUE OR WHITE SMOKE

Diagnosing and correcting excessive blue or white smoke issues.

EXCESSIVE OIL CONSUMPTION

Troubleshooting steps for excessive oil consumption.

ENGINE OVERHEATS

Diagnosing and correcting engine overheating issues.

HIGH EXHAUST TEMPERATURE

Troubleshooting high exhaust temperatures.

LOW ENGINE OIL PRESSURE

Diagnosing and correcting low engine oil pressure.

LOW COMPRESSION

Troubleshooting steps for low engine compression.

CAMSHAFT TIMING AND LOBE LIFT CHECKS

Procedures for checking camshaft timing and lobe lift.

CHASSIS-MOUNTED CHARGE AIR COOLING TESTS

Tests and troubleshooting for the chassis-mounted charge air cooling system.

CMCAC Pressure Test

Procedure for performing a pressure test on the CMCAC system.

Restriction Pressure Test

Procedure for testing charge air cooler restrictions.

Core Inspection

Guidelines for inspecting the CMCAC core for damage and proper flushing procedure.

CYLINDER HEAD AND CYLINDER BLOCK LEAK TEST PROCEDURE

Procedures for pressure testing cylinder heads and blocks for leaks.

ENGINE BRAKE TESTS (MACK POWERLEASH)

Operational tests and electrical troubleshooting for PowerLeash™ engine brake.

MACK PowerLeash Checks (Hydraulic;Mechanical)

Inspection and adjustment verification for PowerLeash™ brake components.

MACK PowerLeash Troubleshooting Guide

Guide to common PowerLeash™ engine brake problem conditions and corrections.

ENGINE BRAKE TESTS (J-TECH)

Test procedures for the J-Tech™ engine brake.

NO ENGINE BRAKE OPERATION

Troubleshooting steps when the engine brake will not operate.

MAINTENANCE

LUBRICATION SYSTEM MAINTENANCE FOR ASET ENGINES

Procedures for maintaining the engine lubrication system.

Crankcase Breather Element Cleaning [219 ER]

Instructions for cleaning the crankcase breather element.

Oil Level Check

Procedure for checking the engine oil level accurately.

Oil and Filter Change Procedure [219 EV]

Step-by-step guide for changing engine oil and replacing filters.

CENTRI-MAX ULTRA OR ULTRA PLUS OIL FILTER [219 EV]

Procedure for servicing Centri-Max® ULTRA and ULTRA PLUS oil filters.

FUEL FILTER ELEMENT REPLACEMENT FOR ASET AC ENGINES

Instructions for replacing primary and secondary fuel filter elements.

COOLANT CONDITIONER ELEMENT REPLACEMENT FOR ASET ENGINES

Procedure for replacing the coolant conditioner element.

OIL COALESCING AIR FILTER REPLACEMENT

Procedure for replacing the oil coalescing air filter.

DRIVE BELT REPLACEMENT AND TENSIONING FOR ASET AC ENGINES [216 AA]

Instructions for replacing and tensioning drive belts on ASET™ AC engines.

Automatically Tensioned System

Details on the installation, tensioning, and maintenance of automatic belt tensioners.

REPAIR INSTRUCTIONS, PART 1

ENGINE REMOVAL

General guidelines and steps for removing the engine from the vehicle.

ENGINE DISASSEMBLY

Step-by-step procedures for complete engine disassembly.

Filter Element Removal [219 EV]

Procedure for removing oil filter elements and mounting adapter.

Dipstick Tube Removal

Instructions for removing the dipstick tube from ASET™ AC engines.

Oil Cooler and Oil Filter Mounting Bracket Assembly Removal [215 DW, 219 EP]

Procedure for removing the oil cooler and oil filter mounting bracket assembly.

Oil Coalescing Air Filter Removal

Steps for removing the oil coalescing air filter assembly and bracket.

Mounting Engine in Stand

Procedure for safely mounting the engine in an engine stand.

Alternator Removal [271 CB]

Instructions for removing the alternator.

Engine Electronic Control Unit (EECU) and Cooling Plate Removal [230 EA]

Procedure for removing the EECU and its cooling plate.

EGR Gas Tube Removal and Installation

Covers removal and installation of EGR gas tubes.

EGR Cooler Removal [214 HM]

Procedure for removing the EGR cooler assembly.

EGR Mixer Tube Removal [214 HL]

Steps for removing the EGR mixer tube.

Thermostat Housing Removal [215 NG]

Procedure for removing the thermostat housing.

Oil Supply Lines Removal [214 HS, HT & RN]

Instructions for removing external oil supply lines on earlier AC engines.

EXTERNAL OIL SUPPLY ARRANGEMENT ASET AC ENGINES BUILT AFTER DECEMBER 2003

Description of oil supply arrangements for later AC engines.

Turbocharger Removal

Procedure for removing the turbocharger assembly.

Crankshaft Removal [212 HP]

Steps for safely removing the crankshaft from the engine block.

CYLINDER BLOCK RECONDITIONING [211 DB]

Details on cylinder block reconditioning, including special tools.

Piston Cooling Spray Nozzle Removal [219 RV]

Procedure for removing piston cooling spray nozzles.

Cylinder Sleeve Removal [212 NC]

Instructions for removing cylinder sleeves using special tools.

Cleaning and Inspection

Guidelines for cleaning and inspecting the cylinder block and sleeves.

SOLVENT TANK CLEANING

Procedure for cleaning engine components using solvent.

SALVAGING A DAMAGED EUP TAPPET BORE

Procedure for repairing damaged EUP tappet bores.

Cylinder Block Cleaning and Lifter Checks

Steps for cleaning lifter bores and checking lifter fit.

Camshaft Removal [213 CH]

Procedure for removing the camshaft.

Camshaft Bushing Replacement [213 CC]

Procedure for replacing camshaft bushings.

Cylinder Sleeve Counterbore [211 DB]

Instructions for inspecting and cutting cylinder sleeve counterbores.

Cylinder Head Assembly Removal [213 EV]

Procedure for removing the cylinder head assemblies.

Cylinder Head Gasket

Details on the cylinder head gasket design and identification.

Cylinder Head Installation

Procedure for installing the cylinder heads.

Cylinder Head Pipe Plug Replacement

Procedure for replacing 3/4-inch pipe plugs in the cylinder head.

Cylinder Sleeve Installation

Procedure for installing cylinder sleeves, including shims and sealant.

Exhaust Manifold Installation [214 EG]

Instructions for installing the exhaust manifold.

Flywheel Housing Installation

Procedure for installing the flywheel housing.

Flywheel Inspection and Resurfacing [212 UB]

Guidelines for inspecting and resurfacing the flywheel.

Flywheel Installation

Procedure for installing the flywheel onto the crankshaft.

Flywheel Removal

Steps for removing the flywheel.

Fuel Injector Nozzle Holder Insert Replacement [213 GB]

Procedure for replacing the injection nozzle holder insert.

Fuel Nozzle Inlet Tube Assembly Installation

Instructions for installing the fuel nozzle inlet tube assemblies.

Fuel System

General information and procedures for the fuel system.

Gear Train

Description of the gear train components and timing marks.

HIGH EXHAUST TEMPERATURE

Troubleshooting guide for high exhaust temperatures.

HIGH-PRESSURE FUEL SYSTEM

Details on the high-pressure fuel system.

H-RING REPLACEMENT

Procedure for replacing H-rings in the lifter bores.

REPAIR INSTRUCTIONS, PART 1

Section covering various engine repair procedures.

REPAIR INSTRUCTIONS, PART 2

Section covering cooling system and EGR system repair procedures.

REPAIR INSTRUCTIONS, PART 3

Section covering engine setup, adjustments, and troubleshooting.

TROUBLESHOOTING

Guide for diagnosing and resolving engine problems.

ENGINE SYMPTOM DIAGNOSIS FOR MACK ASET ENGINES

Provides a diagnostic guide for common engine symptoms.

ENGINE WILL NOT CRANK

Lists possible causes and corrections for an engine that will not crank.

ENGINE CRANKS - WILL NOT START

Troubleshooting steps for when the engine cranks but will not start.

ENGINE MISFIRES - NO CODE(S)

Troubleshooting steps for engine misfires without diagnostic codes.

LOW ENGINE OIL PRESSURE

Diagnosing and correcting low engine oil pressure.

LOW COMPRESSION

Troubleshooting steps for low engine compression.

CAMSHAFT TIMING AND LOBE LIFT CHECKS

Procedures for checking camshaft timing and lobe lift.

CHASSIS-MOUNTED CHARGE AIR COOLING TESTS

Tests and troubleshooting for the chassis-mounted charge air cooling system.

CMCAC Pressure Test

Procedure for performing a pressure test on the CMCAC system.

Restriction Pressure Test

Procedure for testing charge air cooler restrictions.

CYLINDER HEAD AND CYLINDER BLOCK LEAK TEST PROCEDURE

Procedures for pressure testing cylinder heads and blocks for leaks.

ENGINE BRAKE TESTS (MACK POWERLEASH)

Operational tests and electrical troubleshooting for PowerLeash™ engine brake.

MACK PowerLeash Troubleshooting Guide

Guide to common PowerLeash™ engine brake problem conditions and corrections.

ENGINE BRAKE TESTS (J-TECH)

Test procedures for the J-Tech™ engine brake.

NO ENGINE BRAKE OPERATION

Troubleshooting steps when the engine brake will not operate.

VTG ACTUATOR REMOVAL AND INSTALLATION

Procedure for removing and installing the VTG position control valve.

VTG Actuating System Calibration

Procedure for recalibrating the VTG actuating system for proper vane positioning.

CHECKING ACTUATOR AND VANE FUNCTION

Procedure for checking the actuator and vane function.

SPECIAL TOOLS & EQUIPMENT

ASET ENGINE SPECIAL TOOLS

List of special tools required for ASET™ engine overhaul.

Special Tools for Engine Overhaul

Detailed list of special tools for engine overhaul procedures.

V-MAC III Special Tools

List of special tools required for V-MAC III system diagnostics.

APPENDIX

FASTENER IDENTIFICATION

Information on selecting and identifying threaded fasteners.

Fastener Sizes and Types

Details on fastener sizing and types, including U.S. Inch and metric systems.

TORQUE WRENCH USE

Guidelines for using torque wrenches accurately.

TURBOCHARGER FAILURE AND ACTIONS REQUIRED TO AVOID REPEAT FAILURE

Information on avoiding repeat turbocharger failures after a replacement.

Cleaning Oil from the Charge Air Cooler

Procedure for cleaning oil and debris from the charge air cooler.

Cleaning the Intake Air System

Steps for cleaning the intake air system after turbocharger failure.

Pre-Lubricating a Turbocharger After Sitting Idle for an Extended Period of Time

Procedure for pre-lubricating the turbocharger after extended idle periods.

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