E-TECH™ ENGINE
S E R V I C E M A N U A L
( I n c l u d e s L e f t - S i d e R e d e s i g n )
OCTOBER 2000 (REVISED)
5-106
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ERRATA SHEET — ENGINE
Crankshaft Center Main Bearing
Specification Update
Effective January 2006, Mack Powertrain Engineering has widened the crankshaft center main bearing runout specification. The maximum allowable crankshaft runout specification was changed from 0.005 in. (0.127 mm) to 0.007 in. (0.178 mm). The manuals listed below are affected by this change.
Reference: Engine Manuals
5-101 E7
5-106 E-Tech™
5-107 E7G
5-110 ASET™ AI/AMI
5-111 ASET™ AC
JANUARY 2006 |
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© MACK TRUCKS, INC. 2006 |
(NEW ISSUE) |
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MACK ENGINE SERIES |
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SERVICE BULLETIN
NUMBER: SB-210-034
DATE: 5/14/02
MODEL: E-Tech™
(Also applies to Mack Trucks Australia)
MISCELLANEOUS FASTENER CHANGES — E-TECH™ ENGINES
The following fastener changes were made on E-Tech™ engines:
Injection Nozzle Hold-Down Screws — Beginning 3/00, the injection nozzle holddown screws having the 15 mm external hex head have been changed to a new screw (part No. 421GC2116M) that has a 16 mm internal hex head.
Rocker Shaft Mounting Bracket Bolts — Beginning 4/00, the bolts and washers used to secure the rocker shaft mounting brackets to the cylinder head have been changed to a flange-head bolt (part No. 65AM5010). Tightening torque value for this new fastener remains the same at 40 lb-ft (50 N•m).
Air Compressor Mounting Screw — Beginning 8/00, the original hex-head screw has been changed to a flange-head screw (part No. 27AM16). This change was made so that the mounting screw clamp load is distributed over a wider area of the flat washer.
Camshaft Thrust Washer — Beginning 10/00, the two screws and washers used to secure the camshaft thrust washer to the block were changed to a flange-head screw (part No. 66AM44). Tightening torque value for this fastener remains the same at 15 lbft (20 N•m).
Cylinder Head Capscrews — Beginning 6/01, the cylinder head capscrews and the separate hardened flat washer were replaced in production with capscrews having captured washers (part number series 400GC317M). This change was implemented to prevent the possibility of omitting or installing more than one washer during assembly. Additionally, the outside diameter of the captured washer was reduced slightly (approximately 0.030″) to accommodate the redesigned cylinder head cover that was phased into production 7/01. Cylinder head capscrew torque remains the same at 205 lb-ft (278 N•m).
Flywheel-to-crankshaft mounting bolts — Beginning 9/01, bolts having captured washers (part Nos. 419GC31M and 419GC31M2) were released into production to replace the previously used bolts and separate hardened flat washer used to secure the flywheel to the crankshaft. Flywheel-to-crankshaft mounting bolt torque remains the same at 185 lb-ft (250 N•m).
Electronic Unit Pump (EUP) hold-down screws — Beginning 11/01, new hold-down screws (part No. 421GC2123M) were released into production for the electronic unit pumps. These screws are dimensionally the same as the previously used screws, but conform to a more stringent specification that controls minor surface forming defects to a greater degree than for common fasteners.Torque of the EUP hold-down bolts has been changed from 42 lb-ft (57 N·m) to 60 lb-ft (81 N·m).
Turbocharger Mounting Nuts — Beginning 5/02, new turbocharger mounting nuts were released into production. These nuts (part No. 142GC247M) are composed of silver-plated stainless steel to provide greater resistance to heat than the previous nuts. Additionally, these nuts have the Spiralock™ self-locking thread feature to prevent loosening in service.
SB-210-034 — Page 1 of 1
SERVICE PUBLICATIONS, ALLENTOWN, PA 18105 ©MACK TRUCKS, INC. 2002
E-TECH™ ENGINE SERVICEMANUAL
(Includes Left-Side Redesign)
MAY 2006 REPRINTED 2.5M |
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SEPTEMBER 2004 REPRINTED 2.5M |
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APRIL 2003 REPRINTED 2.5M |
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JUNE 2002 REPRINTED 2.5M |
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OCTOBER 2001 REPRINTED 2.5M |
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OCTOBER 2000 |
© MACK TRUCKS, INC. 2000 |
(REVISED – SUPERSEDED ISSUE JULY 1999) |
5-106 |
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ATTENTION
The information in this manual is not all inclusive and cannot take into account all unique situations. Note that some illustrations are typical and may not reflect the exact arrangement of every component installed on a specific chassis.
The information, specifications, and illustrations in this publication are based on information that was current at the time of publication.
No part of this publication may be reproduced, stored in a retrieval system, or be transmitted in any form by any means including electronic, mechanical, photocopying, recording, or otherwise without prior written permission of Mack Trucks, Inc.
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TABLE OF CONTENTS
TABLE OF CONTENTS
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TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Advisory Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Service Procedures and Tool Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 EXPLANATION OF NUMERICAL CODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ABOUT THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Changes from the Existing E-Tech™ Service Procedures Manual . . . . . . . . . . . . . . . . . . . . . . . 6 ABOUT THE E-TECH™ ENGINE AND ITS SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ENGINE MODEL IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Engine Information Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Engine Serial Number Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DESCRIPTION & OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 E-TECH™ ENGINE DESIGN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Electronic Unit Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 V-MAC III . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Belt Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 J-Tech™ Engine Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Valve Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Low-Pressure Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Fuel Filtration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 High-Pressure Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 High-Pressure Fuel Injection Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Fuel Injector Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Cylinder Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Block Heater for Front (Water Pump) Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Cylinder Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Cylinder Head Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Gear Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Air Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Power Steering Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Vibration Damper Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Front Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Centri-Max® Oil Filter Breather Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 GLOSSARY OF TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
ENGINE SYMPTOM DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
V-MAC III Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
CAMSHAFT TIMING AND LOBE LIFT CHECKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Camshaft Timing Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Camshaft Lobe Lift Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
CHASSIS-MOUNTED CHARGE AIR COOLING TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Special Tool Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
CMCAC Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
CMCAC Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Restriction Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
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Core Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 CMCAC Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 CYLINDER HEAD AND CYLINDER BLOCK LEAK TEST PROCEDURE . . . . . . . . . . . . . . . . . . . 71 Cylinder Head and Head Gasket Check — In Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Cylinder Head Fuel Passages Leak Check — In Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Cylinder Block/Cylinder Head Coolant Passages Leak Check — In Chassis . . . . . . . . . . . . . . 72 Cylinder Head Oil Passage Leak Check — Out of Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Cylinder Head Coolant Passage Leak Check — Out of Chassis . . . . . . . . . . . . . . . . . . . . . . . . 75 Cylinder Block Coolant Passage Leak Check — Out of Chassis . . . . . . . . . . . . . . . . . . . . . . . . 76 ENGINE BRAKE TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Operational Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Electrical Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Hydraulic/Mechanical Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 Final Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
BELT DRIVE SYSTEM TENSIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Manually Tensioned System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Automatically Tensioned System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
FILTER ELEMENT REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Crankcase Breather Filter Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Oil Filter Element Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Fuel Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Coolant Conditioner Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
REPAIR INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 ENGINE REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Removal from Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 ENGINE DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Filter Element Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Oil Cooler and Oil Filter Mounting Bracket Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . 101 Mounting Engine in Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Alternator Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Engine Electronic Control Unit (EECU) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Fuel Filter Adapter Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Coolant Conditioner Element Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Oil Cooler-to-Water Pump Inlet Line Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109 Thermostat Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 Coolant Manifold Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Air Inlet Manifold Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Water Pump Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Turbocharger Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Fuel Nozzle Inlet Tube Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Exhaust Manifold Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Engine Wiring Harness Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Engine Electronic Control Unit (EECU) and Cooling Plate Removal . . . . . . . . . . . . . . . . . . . . 115 Electronic Unit Pump (EUP) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 Oil Fill Tube Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
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Air Compressor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Valve Cover and Spacer Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Rocker Arm, Valve Yoke and Push Rod Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Nozzle Holder Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Cylinder Head Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 Vibration Damper and Crankshaft Hub Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Oil Pan Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 Oil Pump Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Front Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Auxiliary Shaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Camshaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Piston and Connecting Rod Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Flywheel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 Flywheel Housing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132 Main Bearing Cap Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Crankshaft Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
CYLINDER BLOCK RECONDITIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Special Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Piston Cooling Spray Nozzle Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134 Cylinder Sleeve Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135 Cleaning and Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Cylinder Sleeve Counterbore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Cup Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 Pipe Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 H-Ring Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 Camshaft Bushing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 Auxiliary Shaft Bushing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Cylinder Sleeve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 Piston Cooling Spray Nozzle Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Cylinder Block Dowel Pin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
CRANKSHAFT AND FLYWHEEL BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Crankshaft Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161 Crankshaft Dowel Pin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 Crankshaft Gear Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Crankshaft Wear Ring Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Flywheel Inspection and Resurfacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
AUXILIARY SHAFT AND CAMSHAFT BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . 168 Auxiliary Shaft Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Camshaft Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 CONNECTING ROD AND PISTON BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Connecting Rod Inspection and Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 Piston Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176 Piston Ring Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Assembling Connecting Rod to Piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 CYLINDER HEAD OVERHAUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Special Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Inlet and Exhaust Valve Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Cylinder Head Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Fire Ring Groove Cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Valve Guide Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
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Valve Seat Insert Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Valve Spring Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Injection Nozzle Holder Insert Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Valve Yoke Guide Pin Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Cylinder Head Cup Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Cylinder Head Pipe Plug Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Valve Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
VALVE ROCKER ARM SHAFT BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Rocker Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Valve Rocker Arm Shaft Disassembly (without/with Engine Brake) . . . . . . . . . . . . . . . . . . . . . 206
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Valve Rocker Arm Shaft Reassembly (without Engine Brake) . . . . . . . . . . . . . . . . . . . . . . . . . 207
Valve Rocker Arm Shaft Reassembly (with J-Tech™ Engine Brake) . . . . . . . . . . . . . . . . . . . 209
LUBRICATION SYSTEM BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Oil Cooler Assembly Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Oil Pump Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
COOLING SYSTEM COMPONENTS BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Oil Cooler Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Water Pump Reconditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
FUEL SYSTEM COMPONENTS BENCH PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Electronic Unit Pump (EUP) Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Installation of Electronic Unit Pump Plunger Spring and Seat . . . . . . . . . . . . . . . . . . . . . . . . . 219
Fuel Injector Nozzle Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
ENGINE REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Crankshaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Main Bearing Cap Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Piston and Connecting Rod Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Flywheel Housing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Crankshaft Rear Oil Seal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Flywheel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Valve Lifter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Camshaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Camshaft Core Plug Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Camshaft Idler Gear Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Auxiliary Shaft Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Oil Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Front Cover Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Crankshaft Front Seal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Crankshaft Hub Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Vibration Damper Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Oil Pan Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Cylinder Head Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Exhaust Manifold Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Nozzle Holder Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Push Rod Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Valve Yoke Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Rocker Arm and Engine Brake Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Valve Cover and Spacer Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Oil Fill Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Engine ECU/Cooling Plate Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
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|
Air Compressor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
267 |
Electronic Unit Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
268 |
Engine Wiring Harness Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
269 |
Fuel Nozzle Inlet Tube Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
269 |
Turbocharger Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
270 |
Water Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
271 |
Oil Cooler and Oil Filter Mounting Bracket Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
272 |
Coolant Manifold Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
274 |
Air Inlet Manifold Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
276 |
Thermostat, Housing and Seal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
276 |
Coolant Conditioner Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
278 |
Fuel Filter Adapter Assembly Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
278 |
Engine ECU Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
280 |
Oil Cooler-to-Water Pump Inlet Line Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
280 |
Alternator Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
281 |
Removing Engine from Engine Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
281 |
Plate-Type Oil Cooler and Oil Filter Mounting Bracket Assembly Installation . . . . . . . . . . . . . |
282 |
ENGINE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
284 |
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
284 |
Engine Installation into Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
284 |
IN-CHASSIS PART/COMPONENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
286 |
Electronic Unit Pump (EUP) Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
286 |
Camshaft Replacement (Engine in Chassis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
288 |
Engine Brake Control Valve Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
293 |
Valve Lifter H-Ring Installation Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
295 |
ENGINE SETUP AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
297 |
Fuel Injection Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
297 |
Valve Yoke, Valve Lash and Engine Brake Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
297 |
Engine Speed and Position Sensors Installation and Adjustment . . . . . . . . . . . . . . . . . . . . . . |
304 |
Electronic Unit Pump (EUP) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
305 |
ENGINE FINAL PREPARATION AND OPERATIONAL CHECK . . . . . . . . . . . . . . . . . . . . . . . . . |
306 |
Filter Element Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
306 |
Engine Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
306 |
Turbocharger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
306 |
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
307 |
Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
307 |
Engine Operational Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
307 |
REBUILT ENGINE RUN-IN PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
308 |
General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
308 |
Run-In Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
308 |
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
E-TECH™ ENGINE MECHANICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Material and Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
E-Tech™ Component Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
SPECIFICATION FOOTNOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
E-TECH™ ENGINE LUBRICANT AND SEALANT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 329
FASTENER TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Fastener Selection and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Fastener Sizes and Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
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TABLE OF CONTENTS
SCHEMATICS & DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
ENGINE SYSTEM SCHEMATICS (FLUIDS FLOW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Cooling System Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Lubrication System Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Fuel System Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
SPECIAL TOOLS & EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337 E-TECH™ ENGINE SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338 Special Tools for Engine Overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338 V-MAC III Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
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INTRODUCTION
INTRODUCTION
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INTRODUCTION
SAFETY INFORMATION
Advisory Labels
Cautionary signal words (Danger-Warning-Caution) may appear in various locations throughout this manual. Information accented by one of these signal words must be observed to minimize the risk of personal injury to service personnel, or the possibility of improper service methods which may damage the vehicle or cause it to be unsafe. Additional Notes and Service Hints are used to emphasize areas of procedural importance and provide suggestions for ease of repair. The following definitions indicate the use of these advisory labels as they appear throughout the manual:
Activities associated with Danger indicate that death or serious personal injury may result from failing to heed the advisory. Serious personal injury may be equated to career-ending injury.
Activities associated with Warning indicate that personal injury may result from failing to heed the advisory. In this case, personal injury is not equated to career-ending injury, but results in possible change in quality of life.
Activities associated with Caution indicate that product damage may result from failing to heed the advisory. Caution is not used for personal injury.
A procedure, practice, or condition that is essential to emphasize.
A helpful suggestion that will make it quicker and/or easier to perform a procedure, while possibly reducing service cost.
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INTRODUCTION
Service Procedures and Tool Usage
Anyone using a service procedure or tool not recommended in this manual must first satisfy himself thoroughly that neither his safety nor vehicle safety will be jeopardized by the service method he selects. Individuals deviating in any manner from the instructions provided assume all risks of consequential personal injury or damage to equipment involved.
Also note that particular service procedures may require the use of a special tool(s) designed for a specific purpose. These special tools must be used in the manner described, whenever specified in the instructions.
1.Before starting a vehicle, always be seated in the driver’s seat, place the transmission in neutral, be sure that parking brakes are set, and disengage the clutch.
2.Before working on a vehicle, place the transmission in neutral, set the parking brakes, and block the wheels.
3.Before towing the vehicle, place the transmission in neutral and lift the rear wheels off the ground, or disconnect the driveline to avoid damage to the transmission during towing.
Engine-driven components such as Power Take-Off (PTO) units, fans and fan belts, driveshafts and other related rotating assemblies, can be very dangerous. Do not work on or service engine-driven components unless the engine is shut down. Always keep body parts and loose clothing out of range of these powerful components to prevent serious personal injury. Be aware of PTO engagement or nonengagement status. Always disengage the PTO when not in use.
REMEMBER,
SAFETY . . . IS NO ACCIDENT!
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INTRODUCTION
Mack Trucks, Inc. cannot anticipate every possible occurrence that may involve a potential hazard. Accidents can be avoided by recognizing potentially hazardous situations and taking necessary precautions. Performing service procedures correctly is critical to technician safety and safe, reliable vehicle operation.
The following list of general shop safety practices can help technicians avoid potentially hazardous situations and reduce the risk of personal injury.
DO NOT perform any services, maintenance procedures or lubrications until this manual has been read and understood.
rPerform all service work on a flat, level surface. Block wheels to prevent vehicle from rolling.
rDO NOT wear loose-fitting or torn clothing. Remove any jewelry before servicing vehicle.
rALWAYS wear safety glasses and protective shoes. Avoid injury by being aware of sharp corners and jagged edges.
rUse hoists or jacks to lift or move heavy objects.
rNEVER run engine indoors unless exhaust fumes are adequately vented to the outside.
rBe aware of hot surfaces. Allow engine to cool sufficiently before performing any service or tests in the vicinity of the engine.
rKeep work area clean and orderly. Clean up any spilled oil, grease, fuel, hydraulic fluid, etc.
rOnly use tools that are in good condition, and always use accurately calibrated torque wrenches to tighten all fasteners to specified torques. In instances where procedures require the use of special tools which are designed for a specific purpose, use only in the manner described in the instructions.
rDo not store natural gas powered vehicles indoors for an extended period of time (overnight) without first removing the fuel.
rNever smoke around a natural gas powered vehicle.
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INTRODUCTION
EXPLANATION OF NUMERICAL CODE
The organization of MACK service manuals has been upgraded to standardize manual content according to a reference system based on component identification. The new reference system will help link the information contained in this publication with related information included in other MACK service/warranty publications, such as associated service bulletins, warranty manuals, and MACK Service Labor Time Standards.
The system is based on a numerical code, the first digit of which identifies the general component grouping as listed here:
GROUP 000 — GENERAL DATA
GROUP 100 — CHASSIS
GROUP 200 — ENGINE
GROUP 300 — CLUTCH, TRANSMISSION, TRANSFER CASE AND PTO
Examples:
GROUP 400 — STEERING, AXLES, WHEELS AND TIRES, DRIVELINE
GROUP 500 — BRAKES, AUXILIARY SYSTEMS
GROUP 600 — CAB, TRUCK BODY
GROUP 700 — ELECTRICAL
The second two digits of the three-digit code are used to identify the system, assembly or subassembly, as appropriate, within each of the groupings. The codes applicable to this publication are shown at the beginning of each procedure, as necessary, to guide you to specific component information.
Additionally, a two-character alpha code (i.e., [NV] RINGS, PISTON) may be referenced with each procedure. This alpha code, in combination with the three-digit Group number, identifies the specific assembly, sub-assembly or part, and directly relates to the first five positions of the operation code listed in MACK Service Labor Time Standards.
Numerical Code
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INTRODUCTION
ABOUT THIS MANUAL
Changes from the Existing E-Tech™ Service Procedures Manual
Mack Trucks, Inc. has made many major improvements to this E-Tech™ Service Procedures Manual, with changes to both content and organization. This is a complete manual, describing engine features and the operation of major systems as well as providing comprehensive overhaul procedures, specifications and adjustments.
All specifications and torque values are given in English and metric measurements. Critical torque values are also included in the text, eliminating the need to refer to SPECIFICATIONS section each time a specified torque value is required. The Special Tools list has been revised to include all special tools required for a complete overhaul. Warnings, cautions, notes and service hints help the technician service the engine safely and efficiently.
The engine disassembly procedures show how to remove components in an order that requires the least amount of handling. Where appropriate, it includes general information needed to properly service that component.
Various component bench procedures guide the technician in disassembly, cleaning, inspection and assembly of each component. Each bench procedure helps in determining if the part is serviceable or should be replaced.
The engine reassembly procedure includes step- by-step instructions for reassembling the engine. This helps to ensure proper installation and longer service life.
Under Engine Setup and Adjustments, the latest setup information is provided for adjusting all E-Tech™ engine models. Engines perform best and conserve fuel most efficiently when adjusted properly.
Two additional procedures are included as guides for removing and reinstalling the engine. Both sections are generic in nature since E-Tech™ engine installation procedures vary from one vehicle style to another. As such, the procedures are intended as a checklist to remind the technician of all necessary tasks.
While troubleshooting procedures are similar for most diesel engines, this manual includes only those that pertain to the E-Tech™ engine. The TROUBLESHOOTING section contains symptom-related questions as well as tests to help the technician consider all possible problem sources.
This service manual also includes applicable information from active service bulletins and service letters since publication of the E-Tech™ Service Procedures Manual dated July 1999.
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INTRODUCTION
ABOUT THE E-TECH™ ENGINE AND ITS SERVICE
This publication is intended to provide technicians with a working knowledge of the E-Tech™ engine, including both early-production and current-production versions.
The E-Tech™ engine has undergone a left-side redesign. Changes include a new plate-type oil cooler and a new oil filter mounting arrangement. This new oil filter arrangement includes a new centrifugal oil filter assembly, where the centrifugal filter assembly is now mounted upside down, and the external oil drain is eliminated. This new centrifugal oil filter is called Centri-Max® PLUS.
The engine electronic control unit (EECU) has been relocated to the left side of the engine and is mounted on a new one-piece inlet manifold. Relocating the EECU has eliminated the need for the EECU cooling plate, and has also brought about a design change to the unit pump front outboard heat shield. Additionally, with the change to the one-piece inlet manifold, the fuel filter mounting adapter is new and is located slightly forward of the previous location.
Descriptions of these design changes and the other features are provided in the DESCRIPTION & OPERATION section. Additionally, the service effects of these changes on removal, installation, disassembly, assembly, setup and adjustment procedures, etc., are included in the respective sections of this publication.
Development of the E-Tech™ engine has been driven by three basic requirements. It was designed to:
rMeet projected exhaust and noise emissions regulations.
rMeet customer demands for improved fuel economy, driveability and engine braking.
rCompete in a world market.
Although the drive to reduce emissions and noise levels is primarily the result of government mandates, the E-Tech™ engine is designed to provide customers with an improved engine over the existing E7 engine it replaces. Specific improvements include:
rImproved fuel economy.
rIncreased throttle response (time to 90 percent torque is faster with the E-Tech™).
rMore retarding horsepower through a newly designed J-Tech™ Engine Brake from Jacobs.
Mack Trucks, Inc. is looking beyond the borders of North America to increase its market and bring the quality, toughness and technology associated with the MACK name to a worldwide audience.
The current environment of global regulations concerning exhaust emissions, noise and other factors has leveled the playing field on an international basis. This means that the improvements made to meet the North American environmental regulations can now be applied worldwide.
The E-Tech™ engine is used in MACK trucks and European Renault VI trucks.
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IDENTIFICATION
IDENTIFICATION
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IDENTIFICATION
ENGINE MODEL
IDENTIFICATION
Engine Information Plate
The E-Tech™ engine information plate is located on the top of the front cylinder head cover (back cover for LE and MR chassis). This plate includes information concerning:
rEngine model, serial number and 11GBA part number.
rAdvertised horsepower at rated speed rpm.
rEmissions regulations to which the engine conforms and other pertinent information required by emissions regulations.
rInlet and exhaust valve lash settings and engine brake slave piston lash setting.
The following explanations are provided to aid in interpreting some of the key information found on the engine information plate.
Block 1 — U.S. EPA Regulations
rAn “X” in block one means the engine meets United States EPA regulations for the year stamped in block four.
rTwo dashes in block one indicate the engine does not meet United States EPA regulations for the year stamped in block four. This is only permissible with certain export engines. All domestic engines will have an “X” in block one.
Block 2 — California Regulations
rAn “X” in block two indicates the engine meets California emissions regulations for the year stamped in block four. This engine is referred to as a “50-state” engine and can be sold in any state throughout the U.S.
rTwo dashes stamped in block two mean the engine does not meet California emissions regulations. If an engine has an “X” in block one and two dashes in block two, it is referred to as a “49-state” engine, meaning it is not certified for sale in California.
Block 3 — ADR Regulations
rAn “X” in block three means the engine has been certified to meet Australian emissions regulations.
rTwo dashes in block three mean the engine does not meet Australian emissions regulations.
Block 4 — Model Year
rThe four-digit number stamped in block four represents the year in which the engine was certified.
Block 5 — Federal Family
rA 12-digit number stamped in block five denotes the Federal Family to which the engine belongs for emissions certification purposes.
rAll domestic engines will have a 12-digit Federal Family number in block five.
Block 6 — California Family
rIf the engine meets California emissions regulations, the same 12-digit number stamped in the Federal Family block is stamped in block six.
rIf the engine does not meet California emissions regulations, there will be two dashes in block six.
Block 7 — Initial Injection Timing
rE-Tech™ engines do not have an initial injection timing, as this is controlled electronically.
rE-Tech™ engines will have “NA” stamped in block seven.
Block 8 — Engine Brake
rThis block is only used when the engine is equipped with an engine brake. The stamping in this block indicates the engine brake slave-piston lash setting.
Figure 1 illustrates the location of the information plate and Figure 2 illustrates its content.
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IDENTIFICATION
Figure 1 — Engine Information Plate Location
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IDENTIFICATION
Figure 2 — Engine Information Plate
Engine Serial Number Identification
In addition to the engine information plate on the front cylinder head cover, the engine is also identified by the engine serial number stamped into the cylinder block. This serial number is located on the block right side just below the turbo oil drain tube flange as shown in Figure 3.
Figure 3 — Engine Serial Number
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DESCRIPTION & OPERATION
DESCRIPTION & OPERATION
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DESCRIPTION & OPERATION
E-TECH™ ENGINE DESIGN FEATURES
The E-Tech™ engine evolved from the E7 PLN (commonly referred to as the E7). The four primary design features that differentiate the E-Tech™ engine from the E7 engine are as follows:
rElectronic Unit Pump (EUP) fuel injection system
rV-MAC®III electronic control system
rPoly-v belt drive system
rJ-Tech™ engine brake system from Jacobs
These major changes resulted in subsequent improvements and redesign of related components within the engine.
The EUP is very similar to a unit injector. The primary difference is that the EUP delivers fuel through a fuel injection line to a conventionalstyle nozzle-holder assembly, whereas a unit injector has a nozzle mounted directly on it.
The EUP is capable of providing very high fuelinjection pressures. The pump is controlled by a high-speed solenoid valve (see Figure 4) responding to electronic signals from the V-MAC III engine control module. This electronic control provides a greater timing range. The combination of higher pressures and greater timing control improves the combustion process and optimizes engine performance. This enables the E-Tech™ engine to conform to more stringent emissions regulations while providing performance and fuel economy improvements.
Electronic Unit Pumps
Electronic Unit Pump (EUP) technology, which has been utilized in the heavy-duty industry for many years, has been adapted for the E-Tech™ engine to achieve:
rOptimum performance
rLower emissions
rSimplified service
rMore effective pump/engine diagnostics (individual cylinders can be isolated)
An EUP is a single-plunger fuel-injection pump, one per cylinder, driven by a third lobe on the engine camshaft. The pump roller follower (tappet) is in contact with the engine cam lobe.
Figure 4 — EUP Components
Electronic unit pumps for engines produced through approximately late 3rd quarter 2000 were fitted with three O-rings on the pump housings. Pumps on engines produced later than 3rd quarter 2000 are fitted with two O-rings in the top and bottom grooves. The O-ring in the center groove has been eliminated.
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