Detroit Diesel EPA04 MBE 4000 Instruction manual

MBE 4000 SERVICE MANUAL
ABSTRACT
This manual provides instruction for servicing the MBE 4000 Diesel Engine. Specifically, a basic
overview of each major component and the system, along with the recommendations for removal,
cleaning, inspection, criteria for replacement, repair, installation, and mechanical troubleshooting
are contained in this manual.
TRADEMARK INFORMATION
Loctite® is a registered trademark of Henkel Corporation. Wabco® is a registered trademark
of American Standard, Inc. Hengst® is a registered trademark of Walter Hengst GMBH & Co.
Perma-Lok® is a registered trademark of National Starch and Chemical Investment Holding
Corporation. Henkel® is a registered trademark of Henkel Corporation.
ENGINE EXHAUST
Consider the following before servicing engines:
PERSONAL INJURY
Diesel engine exhaust and some of its constituentsare
known to the State of California to cause cancer, birth
defects, and other reproductive harm.
□Always start and operate an engine in a well ventilated
area.
□If operating an engine in an enclosed area, vent the
exhaust to the outside.
□Do not modify or tamper with the exhaust system or
emission control system.
All information subject to change without notice.
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All information subject to change without notice.
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MBE 4000 SERVICE MANUAL
TABLE OF CONTENTS
GENERAL INFORMATION ...................................................................... 1
SCOPE AND USE OF THIS MANUAL .................................................... 3
GENERAL DESCRIPTION ...................................................................... 3
ELECTRONIC ENGINE CONTROL SYSTEM ......................................... 4
ENGINE BRAKING POWER .................................................................... 7
GENERAL SPECIFICATIONS AND ENGINE VIEWS ............................. 7
ENGINE MODEL AND SERIAL NUMBER ............................................... 13
EXHAUST GAS RECIRCULATION (EGR) SYSTEM ............................... 15
SAFETY INSTRUCTIONS AND PRECAUTIONS .................................... 19
ENGLISH TO METRIC CONVERSION .................................................... 28
DECIMAL AND METRIC EQUIVALENTS ................................................ 29
TORQUE SPECIFICATIONS ................................................................... 31
1ENGINE
1.1 CYLINDER HEAD COVER ...................................................................... 1-3
1.2 CYLINDER HEAD .................................................................................... 1-4
1.3 CYLINDER BLOCK .................................................................................. 1-22
1.4 EGR CYLINDER HEAD AND BLOCK ..................................................... 1-44
1.5 EGR FRONT AND REAR LIFTER BRACKETS ....................................... 1-47
1.6 ENGINE BRAKE ...................................................................................... 1-49
1.7 FRONT RADIAL SEAL ............................................................................. 1-56
1.8 REAR RADIAL SEAL ............................................................................... 1-60
1.9 CRANKSHAFT SEAL WEAR SLEEVE .................................................... 1-63
1.10 CRANKSHAFT ASSEMBLY ..................................................................... 1-68
1.11 FRONT COVER HOUSING ..................................................................... 1-91
1.12 CRANKSHAFT VIBRATION DAMPER .................................................... 1-93
1.13 FLYWHEEL .............................................................................................. 1-95
1.14 RING GEAR ............................................................................................. 1-104
1.15 PILOT BEARING ...................................................................................... 1-108
1.16 ENGINE BARRING TOOL ....................................................................... 1-112
1.17 FLYWHEEL HOUSING ............................................................................ 1-114
1.18 PISTON, PISTON RING, AND CONNECTING ROD ............................... 1-116
1.19 EGR PISTON, PISTON RING, AND CONNECTING ROD ...................... 1-140
1.20 VALVES .................................................................................................... 1-143
1.21 EGR VALVES ........................................................................................... 1-162
1.22 ROCKER ARM ......................................................................................... 1-167
1.23 CAMSHAFT AND CAMSHAFT POSITION SENSOR .............................. 1-171
1.24 EGR CAMSHAFT ..................................................................................... 1-181
1.A ADDITIONAL INFORMATION .................................................................. 1-183
2FUELSYSTEM
2.1 INJECTOR UNIT PUMP ........................................................................... 2-3
2.2 EGR INJECTOR UNIT PUMP .................................................................. 2-15
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2.3 HIGH PRESSURE FUEL LINE AND TRANSFER TUBE ......................... 2-16
2.4 FUEL INJECTOR NOZZLE ...................................................................... 2-26
2.5 EGR FUEL INJECTOR NOZZLE ............................................................. 2-34
2.6 PROTECTIVE SLEEVE ........................................................................... 2-35
2.7 DDEC-ELECTRONIC CONTROL UNIT ................................................... 2-39
2.8 FUEL HEAT EXCHANGER ...................................................................... 2-44
2.9 FUEL FILTER ........................................................................................... 2-47
2.10 FUEL FILTER HOUSING ......................................................................... 2-50
2.11 FUEL FILTER BRACKET ......................................................................... 2-54
2.12 FUEL PUMP ............................................................................................. 2-57
2.13 FUEL PUMP DRIVE ................................................................................. 2-61
2.14 FUEL SYSTEM INSPECTION ................................................................. 2-65
2.A ADDITIONAL INFORMATION .................................................................. 2-73
3 LUBRICATION SYSTEM
3.1 LUBRICATION SYSTEM DESCRIPTION ................................................ 3-3
3.2 OIL PAN ................................................................................................... 3-5
3.3 PISTON OIL SPRAY NOZZLE(S) ............................................................ 3-11
3.4 CAMSHAFT LUBRICATION SPRAYER ................................................... 3-17
3.5 OIL PUMP AND SUMP PIPE ................................................................... 3-19
3.6 OIL FILTER .............................................................................................. 3-27
3.7 OIL HEAT EXCHANGER/FILTER HOUSING .......................................... 3-29
3.8 OIL PRESSURE/TEMPERATURE SENSOR ........................................... 3-34
3.A ADDITIONAL INFORMATION .................................................................. 3-37
4 COOLING SYSTEM
4.1 COOLING SYSTEM ................................................................................. 4-3
4.2 COOLANT PUMP .................................................................................... 4-7
4.3 EGR COOLANT PUMP ............................................................................ 4-18
4.4 FRONT IDLER AND TENSIONER SUPPORT ........................................ 4-19
4.5 THERMOSTAT ......................................................................................... 4-22
4.6 EGR THERMOSTAT HOUSING .............................................................. 4-27
4.7 COOLANT TEMPERATURE SENSOR .................................................... 4-29
4.A ADDITIONAL INFORMATION .................................................................. 4-31
5 FUEL, LUBRICATING OIL, AND COOLANT
5.1 FUEL ........................................................................................................ 5-3
5.2 LUBRICATING OIL .................................................................................. 5-5
5.3 COOLANT ................................................................................................ 5-7
5.A ADDITIONAL INFORMATION .................................................................. 5-13
6 AIR INTAKE SYSTEM
6.1 INTAKE MANIFOLD ................................................................................. 6-3
6.2 CHARGE PRESSURE/TEMPERATURE SENSOR ................................. 6-5
6.3 TURBOCHARGER ................................................................................... 6-6
6.A ADDITIONAL INFORMATION .................................................................. 6-17
7 EXHAUST SYSTEM
7.1 EXHAUST MANIFOLD ............................................................................. 7-3
7.2 EXHAUST BRAKE ASSEMBLY ............................................................... 7-6
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7.3 EGR EXHAUST MANIFOLD .................................................................... 7-14
7.4 EGR COOLER AND COOLER SUPPORT BRACKET ............................ 7-26
7.5 EGR CONTROL VALVE, GAS OUTLET PIPE, AND GAS MIXER .......... 7-47
7.6 EPV (ELECTRONIC PROPORTIONAL VALVE) AND WABCO® AIR
SOLENOID VALVE ................................................................................... 7-54
7.7 HENGST BREATHER FILTER ................................................................. 7-58
7.A ADDITIONAL INFORMATION .................................................................. 7-67
8 ELECTRICAL EQUIPMENT
8.1 DRIVE BELTS .......................................................................................... 8-3
8.A ADDITIONAL INFORMATION .................................................................. 8-15
9POWERTAKE-OFF
9.1 FRONT ENGINE POWER TAKE-OFF (FEPTO) ...................................... 9-3
9.2 REAR ENGINE POWER TAKE-OFF (REPTO) ........................................ 9-7
10 SPECIAL EQUIPMENT
10.1 AIR COMPRESSOR FLANGE ................................................................. 10-3
10.2 AIR COMPRESSOR ................................................................................ 10-5
10.A ADDITIONAL INFORMATION .................................................................. 10-11
11 OPERATION AND VERIFICATION
11.1 PREPARATION FOR A FIRST TIME START ........................................... 11-3
11.2 STARTING THE ENGINE ........................................................................ 11-8
11.3 RUNNING THE ENGINE ......................................................................... 11-11
11.4 STOPPING THE ENGINE ........................................................................ 11-13
12 ENGINE TUNE-UP
12.1 VALVE LASH CHECKING ........................................................................ 12-3
12.2 ADJUSTING VALVE LASH ...................................................................... 12-9
13 PREVENTIVE MAINTENANCE
13.1 SCHEDULED INTERVALS ...................................................................... 13-3
14 ENGINE STORAGE
14.1 PREPARING ENGINE FOR STORAGE .................................................. 14-3
15 TROUBLESHOOTING THE ELECTRONIC ENGINE CONTROL
SYSTEM
15.1 ELECTRONIC ENGINE CONTROL SYSTEM ......................................... 15-3
16 GENERAL MECHANICAL TROUBLESHOOTING
16.1 MECHANICAL TROUBLESHOOTING .................................................... 16-3
17 LOW POWER CONCERN
17.1 FACTORS THAT AFFECT WHEEL HORSEPOWER .............................. 17-3
17.2 LOW HORSEPOWER INTERVIEW ......................................................... 17-6
17.3 AERATED FUEL ..................................................................................... 17-13
17.4 RESTRICTED AIR CLEANER ELEMENT ............................................... 17-15
17.5 RESTRICTED OR CRACKED CHARGE AIR COOLER OR LEAKING
INTAKE MANIFOLD ................................................................................. 17-16
17.6 FAULTY EXHAUST SYSTEM .................................................................. 17-18
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17.7 HIGH INLET AIR TEMPERATURE .......................................................... 17-20
17.8 VERIFICATION OF POWER WITH CHASSIS DYNAMOMETER ........... 17-22
INDEX ................................................................................................. Index-1
All information subject to change without notice.
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GENERAL INFORMATION
Section Page
SCOPE AND USE OF THIS MANUAL ....................................................... 3
GENERAL DESCRIPTION ......................................................................... 3
ELECTRONIC ENGINE CONTROL SYSTEM ............................................ 4
ENGINE BRAKING POWER ...................................................................... 7
GENERAL SPECIFICATIONS AND ENGINE VIEWS ................................ 7
ENGINE MODEL AND SERIAL NUMBER ................................................. 13
EXHAUST GAS RECIRCULATION (EGR) SYSTEM ................................. 15
SAFETY INSTRUCTIONS AND PRECAUTIONS ...................................... 19
ENGLISH TO METRIC CONVERSION ...................................................... 28
DECIMAL AND METRIC EQUIVALENTS ................................................... 29
TORQUE SPECIFICATIONS ...................................................................... 31

MBE 4000 SERVICE MANUAL
All information subject to change without notice.
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MBE 4000 SERVICE MANUAL
SCOPE AND USE OF THIS MANUAL
This manual contains complete instructions on operation, adjustment (tune-up), preventive
maintenance, and repair (including complete overhaul) for the MBE 4000 engine. This manual
was written primarily for persons servicing and overhauling the engine. In addition, this manual
contains all of the instructions essential to the operators and users. Basic maintenance and
overhaul procedures are common to all MBE 4000 engines, and apply to all engine models.
This manual is divided into numbered sections. Section one covers the engine (less major
assemblies). The following sections cover a complete system such as the fuel system, lubrication
system, or air system. Each section is divided into subsections which contain complete
maintenance and operating instructions for a specific engine subassembly. Each section begins
with a table of contents. Pages and illustrations are numbered consecutively within each section.
Information can be located by using the table of contents at the front of the manual or the table of
contents at the beginning of each section. Information on specific subassemblies or accessories
within the major section is listed immediately following the section title.
GENERAL DESCRIPTION
The MBE 4000 Engine described in this manual is a water-cooled, four-stroke, direct injection
diesel engine. The cylinders are arranged in line. Each cylinder has a separate fuel injection pump
(unit pump) with a short injection line to the injection nozzle, which is located in the center of
the combustion chamber. The unit pumps are attached to the crankcase and are driven from the
camshaft. Each cylinder has two intake valves and two exhaust valves.
Charge-air cooling and an exhaust gas turbocharger are standard equipment on all MBE 4000
engines.
The engine has a fully electronic control system, which regulates the injection quantity and timing
using solenoid valves, allowing extremely low-emission operation. The control system consists of
an engine-resident pump and nozzle control unit (the DDEC-ECU) and a vehicle control unit (the
DDEC-VCU). The two are connected by a proprietary datalink.
Engine braking is controlled by a pneumatically-operated exhaust brake on the turbocharger and
by a constant-throttle system. For greater braking power, an optional turbo brake is available.
The cylinder block has integrated oil and water channels. The upper section of the cylinder bore
is induction-hardened. The six individual cylinder heads are made of cast iron. The cylinder head
gasket is an adjustment-free seal with rubber sealing elements.
Thepistonsaremadeofalumin
um alloy with ring carriers and a shallow combustion chamber
recess. The pistons are cooled by oil spray nozzles.
The crankshaft is precision-forged with seven main bearings and eight custom-forged counter
weights, and a vibration damper at the front end.
The camshaft is made of induction-hardened steel and has seven main bearings. Each cylinder has
cams for intake and exhaust valves and a unit pump.
The valves are controlled by mushroom tappets, pushrods, and rocker arms. The intake and
exhaust valves are opened and closed by a valve-guided bridge.
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MBE 4000 SERVICE MANUAL
There is a force-feed lubricating oil circuit supplied by a gear-type oil pump. This pump is
positioned at the rear of the oil pan and driven by gears from the crankshaft. The oil heat
exchanger is located near the front of the crankcase on the right-hand side near the turbocharger.
The gear-type fuel pump is located near the front of the crankcase on the left hand side. The pump
is driven from the forward end of the camshaft.
The air compressor, with a power-steering pump attached, is driven by a gear on the camshaft.
The engine is cooled by a closed system using recirculated coolant; temperature is regulated
automatically by a thermostat.
There are three drive belts, each with its own automatic belt tensioner. The alternator and coolant
pump (and any other accessories) are driven by a main drive belt. The fan and the air conditioner
compressor are each driven by their own drive belt.
ELECTRONIC ENGINE CONTROL SYSTEM
The engine is equipped with a fully electronic control system. Besides the engine and its related
sensors, this system is composed of the DDEC-ECU, or engine control unit, and the DDEC-VCU,
or vehicle control unit. The two control units are connected by a proprietary datalink through
which all necessary data and information can be exchanged. The DDEC-VCU then broadcasts
all information on the J1587 and J1939 datalinks, where it can be read by minidiag2, Nexiq™
Diagnostic Data Reader (DDR), or Detroit Diesel Diagnostic Link® (DDDL) PC software.
The DDEC-ECU monitors both the engine and the datalink. When a malfunction or other
problem is detected, the system selects an appropriate response; for example, the emergency
running mode may be activated.
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DDEC-ECU — Engine-Resident Control Unit
The DDEC-ECU control unit is located on the left-hand side of the engine. See Figure 1.The
DDEC-ECU processes the data received from the DDEC-VCU, for example the position of the
accelerator pedal, engine brake, etc. These data are evaluated together with the data from the
sensors on the engine, such as, charge and oil pressure and coolant and fuel temperature. The
data is then compared to the characteristic maps or lines stored in the DDEC-ECU. From these
data, quantity and timing of injection are calculated and the unit pumps are actuated accordingly
through the solenoid valves.
Figure 1 DDEC-ECU Control Unit Location
NOTE:
To obtain a replacement DDEC-ECU, all the data given on the DDEC-ECU label are
required.
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MBE 4000 SERVICE MANUAL
DDEC-VCU — Vehicle Control Unit
The vehicle control unit (DDEC-VCU) communicates with other electronic control units installed
on the vehicle over the J1587 datalink. See Figure 2. Within the DDEC-VCU, sets of data for
specific applications are stored. These include idle speed, maximum running speed, and speed
limitation.
Figure 2 Vehicle Control Unit (DDEC-VCU)
The DDEC-VCU receives data from the following sources:
□The operator (accelerator pedal position, engine brake switch)
□Other electronic control units (for example, the antilock brake system)
□The DDEC-ECU control unit (data such as oil pressure and coolant temperature)
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MBE 4000 SERVICE MANUAL
From these data, instructions are computed for controlling the engine and transmitted to the
DDEC-ECU via the proprietary datalink. The DDEC-VCU controls various systems, forexample,
communications with the datalink, the engine brake, and the constant-throttle valves. If the
engine control system detects a fault, the appropriate fault code is broadcast on the datalink
and can be read using minidiag2. When there is a fault, the code for the control unit reporting
the fault can be read directly on the display.
ENGINE BRAKING POWER
Exhaust Brake/Constant-Throttle Valves
To increase braking performance, the engine is equipped with an exhaust brake on the
turbocharger in conjunction with constant-throttle valves on the cylinder head.
NOTE:
The constant-throttle values are activated by engine oil pressure.
The exhaust back-pressure is used by the exhaust brake to increase braking performance.
Optional Turbo Brake
For high braking output, the MBE 4000 engine can be equipped with an optional turbo brake.
The turbo brake increases the air mass flow through the engine to provide up to 600 brake
horsepower. The turbo brake can be operated either manually or automatically, through the
cruise control function.
Because the charge air pressure is maintained at a high level during braking, full throttle response
is available immediately, if the operator desires it, without any turbo lag.
The turbo brake is maintenance-free, highly reliable, and adds virtually no weight to the engine.
GENERAL SPECIFICATIONS AND ENGINE VIEWS
For a general view of the MBE 4000 engine, showing major components, see Figure 3 for the
left-hand side, and see Figure 4 for the right-hand side.
For a general view of the MBE 4000 engine, showing ports and fluid lines, see Figure 5 for the
left-handsideandseeFigure6fort
he right-hand side.
For a general view of the MBE 4000 engine, showing sensor locations, see Figure 7. Two sensors
are not easily visible from the left-hand side of the engine: the charge pressure/temperature
sensor, located on the right-hand side of the charge air manifold, and the oil pressure/temperature
sensor located at the base of the oil filter.
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MBE 4000 SERVICE MANUAL
1. Front Camshaft Cover 8. Power Steering Pump
2. Thermostat Housing 9. DDEC-ECU Control Unit
3. Coolant Pump 10. Fuel Heat Exchanger
4. Charge-Air (Intake) Manifold 11. Oil Pan
5. Engine Trim Cover 12. Fuel Filter
6. Crankcase Breather 13. Fuel Pump
7. Air Compressor 14. Air Conditioner Compressor
Figure 3 Left Side, Major Engine Components
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1. Starter 8. Alternator
2. Exhaust Brake Valve 9. Oil Filter
3. Exhaust Brake Cylinder 10. Oil Fill Tube
4. Exhaust Manifold 11. Oil Heat Exchanger
5. Cylinder Head Cover 12. Oil Dipstick
6. Fan 13. Turbocharger
7. Belt Tensioner
Figure 4 Right Side, Major Engine Components
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MBE 4000 SERVICE MANUAL
1. Fuel Spill Line 5. Coolant Line (to air compressor)
2. Thermostat Outlet 6. Hydraulic Line (to power steering pump)
3. Charge Air Inlet 7. Electronic Engine Harness Connector
4. Open Breather Tube 8. Fuel Feed Line
Figure 5 Left Side, Ports and Lines
All information subject to change without notice.
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1. Oil Drain Plug 5. Turbocharger Outlet Pipe
2. Turbo Oil Return Line 6. Dipstick
3. Constant-Throttle Inlet 7. Oil Fill Cap
4. Exhaust Brake Valve Outlet 8. Coolant Pump Inlet Pipe
Figure 6 Right Side, Ports and Lines
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MBE 4000 SERVICE MANUAL
1. Intake Manifold Pressure/Temperature Sensor 5. Barometric Pressure Sensor (integrated into
DDEC-ECU)
2. TDC Sensor (on camshaft) 6. Fuel Temperature Sensor
3. Crank Angle Position Sensor 7. Oil Pressure/Temperature Sensor
4. Coolant Temperature Sensor
Figure 7 Sensor Locations
All information subject to change without notice.
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