MTU 20 V 4000 G83 User manual

Operating Instructions
Diesel engine
20 V 4000 G23 with 6 exhaust turbochargers
20 V 4000 G43 with 6 exhaust turbochargers
20 V 4000 G63 with 6 exhaust turbochargers
20 V 4000 G63L with 6 exhaust turbochargers
20 V 4000 G83 with 6 exhaust turbochargers
20 V 4000 G83L with 6 exhaust turbochargers
MS150093/01E

Printed in Germany
© 2012 Copyright MTU Friedrichshafen GmbH
This Publication is protected by copyright and may not be used in any way whether in whole or in part without the prior
written permission of MTU Friedrichshafen GmbH. This restriction also applies to copyright, distribution, translation, micro‐
filming and storage or processing on electronic systems including data bases and online services.
This handbook is provided for use by maintenance and operating personnel in order to avoid malfunctions or damage
during operation.
Subject to alterations and amendments.

Table of Contents
1 Safety
1.1 General conditions 5
1.2 Personnel and organizational requirements 6
1.3 Transport 7
1.4 Crankshaft transport locking device 8
1.5 Explosion hazard when removing
inspection port cover on engine 11
1.6 Safety regulations for maintenance and
repair work 12
1.7 Auxiliary materials, fluids and lubricants,
fire prevention and environmental
protection 15
1.8 Conventions for safety instructions in the
text 17
2 Product Summary
2.1 Engine Layout 18
2.2 Overview of sensors, actuators and
injectors 19
2.3 Engine – Main dimensions 23
2.4 Firing order 24
2.5 Final compression pressure 25
2.6 Engine side and cylinder designations 26
2.7 20V 4000 Gx3 engine data: Continuous
operation, variable 3B, optimized fuel
consumption 27
2.8 20V 4000 Gx3 engine data: Continuous
operation, variable 3B, optimized exhaust
emissions ("TA-Luft") 32
2.9 20 V 4000 Gx3 engine data: Standby
operation 3D, optimized fuel consumption,
6ETC 35
3 Operation
3.1 Putting the engine into operation after
extended out-of-service periods (>3
months) 40
3.2 Putting the engine into operation after
scheduled out-of-service-period 41
3.3 Start engine in manual mode (testing
mode) 42
3.4 Safety system – Override 43
3.5 Operational checks 44
3.6 Starting the engine in emergency situations
(override mode) 45
3.7 Stop engine in manual mode (testing
mode) 46
3.8 Emergency stop 47
3.9 After stopping the engine – Engine remains
ready for operation 48
3.10 After stopping the engine – putting the
engine out of service 49
3.11 Plant cleaning 50
4 Maintenance
4.1 Maintenance task reference table [QL1] 51
5 Troubleshooting
5.1 Troubleshooting 52
5.2 Engine governor ADEC (ECU 7) for Series
4000 genset engines – Fault messages 55
6 Task Description
6.1 Engine 104
6.1.1 Engine – Barring manually 104
6.1.2 Engine – Barring with starting system 105
6.1.3 Engine – Test run 106
6.2 Cylinder Liner 107
6.2.1 Cylinder liner – Endoscopic examination 107
6.2.2 Cylinder liner – Instructions and comments on
endoscopic and visual examination 109
6.3 Crankcase Breather 111
6.3.1 Crankcase breather – Oil mist fine separator
replacement 111
6.4 Valve Drive 112
6.4.1 Valve gear – Lubrication 112
6.4.2 Valve clearance – Check and adjustment 113
6.4.3 Cylinder head cover – Removal and
installation 117
6.5 Injection Pump / HP Pump 118
6.5.1 HP pump – Filling with engine oil 118
6.6 Injection Valve / Injector 119
6.6.1 Injector – Replacement 119
6.6.2 Injector – Removal and installation 120
6.7 Fuel System 125
6.7.1 Fuel system – Venting 125
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6.8 Fuel Filter 126
6.8.1 Fuel filter – Replacement 126
6.8.2 Fuel prefilter cleaning 127
6.8.3 Fuel prefilter – Differential pressure gauge
check and adjustment 128
6.8.4 Fuel prefilter – Draining 129
6.8.5 Fuel prefilter ‒ Flushing 130
6.8.6 Fuel prefilter – Filter element replacement 132
6.9 Charge-Air Cooling 134
6.9.1 Intercooler – Checking condensate drain for
coolant discharge and obstructions 134
6.10 Air Filter 135
6.10.1 Air filter – Replacement 135
6.10.2 Air filter – Check 136
6.10.3 Air filter – Removal and installation 137
6.11 Air Intake 138
6.11.1 Contamination indicator – Signal ring position
check (optional) 138
6.12 Starting Equipment 139
6.12.1 Air starter – Manual operation 139
6.13 Lube Oil System, Lube Oil Circuit 140
6.13.1 Engine oil – Change 140
6.13.2 Engine oil level – Check 142
6.13.3 Engine oil – Sample extraction and analysis 143
6.14 Oil Filtration / Cooling 144
6.14.1 Engine oil filter – Replacement 144
6.14.2 Centrifugal oil filter – Cleaning and filter
sleeve replacement 145
6.15 Coolant Circuit, General, High-
Temperature Circuit 147
6.15.1 Engine coolant – Level check 147
6.15.2 Engine coolant – Change 148
6.15.3 Engine coolant – Draining 149
6.15.4 Engine coolant – Filling 150
6.15.5 Engine coolant pump – Relief bore check 153
6.15.6 Engine coolant – Sample extraction and
analysis 154
6.16 Low-Temperature Circuit 155
6.16.1 Charge-air coolant – Level check 155
6.16.2 Charge-air coolant – Change 156
6.16.3 Charge-air coolant – Draining 157
6.16.4 Charge-air coolant – Filling 158
6.16.5 Charge-air coolant pump – Relief bore check 161
6.17 Belt Drive 162
6.17.1 Drive belt – Condition check 162
6.18 Battery-Charging Generator 163
6.18.1 Battery-charging generator drive – Drive belt
tension adjustment 163
6.18.2 Battery-charging generator drive – Drive belt
replacement 164
6.19 Wiring (General) for Engine/Gearbox/Unit 165
6.19.1 Engine wiring – Check 165
6.20 Engine Mounting / Support 166
6.20.1 Engine mounting – Check 166
6.21 Accessories for (Electronic) Engine
Governor / Control System 167
6.21.1 CDC parameters – Reset with DiaSys® 167
6.21.2 Engine governor and connectors – Cleaning 168
6.21.3 Engine governor – Checking plug-in
connections 169
6.21.4 ECU 7 engine governor – Removal and
installation 170
7 Appendix A
7.1 Abbreviations 171
7.2 MTU contacts/service partners 174
8 Appendix B
8.1 Special Tools 175
8.2 Index 180
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1 Safety
1.1 General conditions
General
In addition to the instructions in this publication, the applicable country-specific legislation and other com‐
pulsory regulations regarding accident prevention and environmental protection must be observed. This
state-of-the-art engine has been designed to meet all applicable laws and regulations. The engine may
nevertheless present a risk of injury or damage in the following cases:
• Incorrect use
• Operation, maintenance and repair by unqualified personnel
• Modifications or conversions
• Noncompliance with the Safety Instructions
Correct use
The engine is intended solely for use in accordance with contractual agreements and the purpose envis‐
aged for it on delivery. Any other use is considered improper use. The engine manufacturer accepts no
liability whatsoever for resultant damage or injury in such case. The responsibility is borne by the user
alone.
Correct use also includes observation of and compliance with the maintenance specifications.
Modifications or conversions
Unauthorized modifications to the engine represent a safety risk.
MTU will accept no liability or warranty claims for any damage caused by unauthorized modifications or
conversions.
Spare parts
Only genuine MTU spare parts must be used to replace components or assemblies. MTU accepts no
liability whatsoever for damage or injury resulting from the use of other spare parts and the warranty shall
be voided in such case.
Reworking components
Repair or engine overhaul must be carried out in workshops authorized by MTU.
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1.2 Personnel and organizational requirements
Personnel requirements
All work on the engine shall be carried out by trained and qualified personnel only.
The specified legal minimum age must be observed.
The operator must specify the responsibilities of the operating, maintenance and repair personnel.
Organizational measures
This publication must be issued to all personnel involved in operation, maintenance, repair or transporta‐
tion.
Keep it at hand at the operating site of the engine so that it is available to operating, maintenance, repair
and transport personnel at all times.
Use the manual as a basis for instructing personnel on engine operation and repair with an emphasis on
explaining safety-relevant instructions.
This is particularly important in the case of personnel who only occasionally perform work on or around
the engine. This personnel must be instructed repeatedly.
For the identification and layout of the spare parts during maintenance or repair work, take photos or use
the spare parts catalog.
Working clothes and protective equipment
Wear proper protective clothing for all work.
Use the necessary protective equipment for the given work to be done.
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1.3 Transport
Transport
Always use the lifting eyes on the engine and generator/gearbox when transporting gensets.
Always use the lifting eyes on the engine when transporting an engine separately.
Only use transport and lifting devices approved by MTU.
The engine/genset must only be transported in installation position: maximum permissible diagonal pull
10°.
Remove any loose parts on the genset.
Raise the engine/genset slowly. The lifting ropes or chains must not make contact with the engine or its
components. Readjust lifting device as necessary.
Pay attention to the center of gravity of the engine/genset.
For special packaging with aluminium foil: Suspend the engine/genset by the lifting eyes on the bearing
pedestal or transport by means of handling equipment (forklift truck) capable of bearing the load.
Fit the crankshaft transportation lock on the engine and fit the engine mount locking devices prior to
transport.
Secure the engine/genset such as to preclude tipping during transport. Secure such as to preclude slip‐
ping and tipping when driving up or down inclines and ramps.
Placement after transport
Place the engine/genset on a firm, flat surface only.
Make sure that the consistency and load-bearing capacity of the ground or support surface is adequate.
Never set an engine down on the oil pan unless expressively authorized to do so by MTU on a case-to-
case basis.
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1.4 Crankshaft transport locking device
Special tools, Material, Spare parts
Designation / Use Part No. Qty.
Torque wrench, 10-60 Nm F30510423 1
Torque wrench, 60-320 Nm F30047446 1
Engine oil
Transport locking device
Note: The locking device protects the crankshaft bearings from shocks and vibration damage during engine
transport.
For installation and removal of the transport locking device, follow the instructions
below:
1. The transport locking device must remain installed as long as possible during engine installation in order
to avoid damage.
2. Prior to every engine transport, the transport locking device must be reinstalled on both sides according
to the instructions.
3. If the engine is to be moved together with the generator, the transport locking device for the generator
must also be installed.
4. Always use the screws supplied with or installed in the transport locking device to secure it on the en‐
gine.
5. Starting or barring the engine is allowed only with the transport locking device removed. If the generator
is already mounted on the engine, ensure that the transport locking device of the generator is also re‐
moved.
6. Attach these instructions, clearly visible, to the engine.
Removing guard plates and engine
mounting brackets (if applicable)
on driving end (KS)
1. Remove screws (4) om both sides and take
off with washers (3), guard plates (1) and
engine mounting brackets (2).
2. Store the removed parts of the transport
locking device carefully for possible reuse.
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Fitting the transport locking device
on driving end (KS)
Note: Attach plates (2) only to the upper part of the openings.
1. Secure the two plates (2) with screws (6) and washers (5) at the bores on both sides of the flywheel
housing and tighten to the specified tightening torque.
Name Size Type Lubricant Value/Standard
Screw M16 Tightening torque (Engine oil) 250 Nm +25 Nm
2. Screw nut (3) onto screws (4) up to the end of the thread.
3. The long end of retainers (1) must face downwards. Push retainers (1) with the round front face through
the plate openings (2).
Note: The retainers (1) must lock the flywheel only, not the ring gear.
4. Install screws (4) into the bores of retainers (1) until the retainers (1) are locked in position.
5. Tighten screws (4) alternately with torque wrench to the specified tightening torque.
Name Size Type Lubricant Value/Standard
Screw M10 Tightening torque (Engine oil) 30 Nm +3 Nm
6. Screw on nuts (3) of both screws (4) at plates (2) and secure.
Removing the transport locking
device from driving end (KS)
1. Release the locknuts (3) on both sides of
the flywheel housing, remove screws (4)
and take off the two locks (1).
2. Unscrew screws (6) and remove together
with washers (5) and plates (2).
3. Store the removed parts of the transport
locking device together with this documen‐
tation carefully for possible reuse.
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Installing guard plates and engine
mounting brackets (if applicable)
on driving end (KS)
Note: Always use the screws supplied with the or
removed from the guard plates and engine
mounting brackets to secure them on the
engine.
1. Install engine mounting brackets (2) on both
sides with guard plates (1) washers (3), and
screws (4).
2. Tighten screws (4).
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1.5 Explosion hazard when removing inspection port cover on
engine
DANGER Explosion hazard due to oil vapors.
Risk of serious injury – danger to life!
• Allow the engine to cool down before opening the crankcase!
• Avoid open flames, electrical sparks and ignition sources.
Safety instructions
uBefore starting maintenance work, allow the engine to cool down for at least 10 min. (danger of explosion
due to oil vapors).
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1.6 Safety regulations for maintenance and repair work
Safety regulations for maintenance and repair work
Have maintenance and repair work carried out by qualified and authorized personnel only.
Allow the engine to cool down before starting maintenance work (risk of explosion of oil vapors).
Before starting work, relieve pressure in systems and compressed-air lines which are to be opened.
Take special care when removing ventilation or plug screws from the engine. Cover the screw or plug
with a rag to prevent fluids escaping under pressure.
Take special care when draining hot fluids ⇒ Risk of injury.
When changing the engine oil or working on the fuel system, ensure that the engine room is adequately
ventilated.
Allow the engine / system to cool down before starting to work.
Observe the maintenance and repair instructions.
Never carry out maintenance and repair work with the engine running unless expressly instructed to do
so.
Secure the engine against accidental starting.
Disconnect the battery when electrical starters are fitted.
Close the main valve on the compressed-air system and vent the compressed-air line when pneumatic
starters are fitted.
Disconnect the control equipment from the assembly or system.
Use only proper, calibrated tools. Observe the specified tightening torques during assembly/disassembly.
Carry out work only on assembles and/or units which are properly secured.
Never use lines for climbing.
Keep fuel injection lines and connections clean.
Always seal connections with caps or covers if a line is removed or opened.
Take care not to damage lines, in particular fuel lines, during maintenance and repair work.
Ensure that all retainers and dampers are installed correctly.
Ensure that all fuel injection and pressurized oil lines are installed with enough clearance to prevent con‐
tact with other components. Do not place fuel or oil lines near hot components.
Do not touch elastomeric seals if they have carbonized or resinous appearance unless hands are proper‐
ly protected.
Note cooling time for components which are heated for installation or removal ⇒ Risk of burning.
When working high on the engine, always use suitable ladders and work platforms. Make sure compo‐
nents are placed on stable surfaces.
Observe special cleanness when conducting maintenance and repair work on the assembly or system.
After completion of maintenance and repair work, make sure that no loose objects are in/on the assem‐
bly or system.
Before barring the engine, make sure that nobody is standing in the danger zone. Check that all guards
have been reinstalled and that all tools and loose parts have been removed after working on the engine.
The following additional instructions apply to starters with beryllium copper pinion:
• Breathing protection of filter class P2 must be applied during maintenance work to avoid health haz‐
ards caused by the beryllium-containing pinion. Do not blow out the interior of the flywheel housing or
the starter with compressed air. Clean the flywheel housing inside with a class H dust extraction de‐
vice as an additional measure.
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Welding work
Never carry out welding work on the assembly, system, or engine-mounted units. Cover the engine when
welding in its vicinity.
Do not use the assembly or system as ground terminal.
Do not route the welding lead over or near the wiring harnesses of MTU systems. The welding current
may otherwise induce an interference voltage in the wiring harnesses which could conceivably damage
the electrical system.
Remove parts (e.g. exhaust pipes) which are to be welded from the engine beforehand.
Hydraulic installation and removal
Check the function and safe operating condition of tools and fixtures to be used. Use only the specified
devices for hydraulic removal/installation procedures.
Observe the max. permissible push-on pressure specified for the equipment.
Do not attempt to bend or apply force to lines.
Before starting work, pay attention to the following:
• Vent the hydraulic installation/removal tool, the pumps and the lines at the relevant points for the
equipment to be used (e.g. open vent plugs, pump until bubble-free air emerges, close vent plugs).
• For hydraulic installation, screw on the tool with the piston retracted.
• For hydraulic removal, screw on the tool with the piston extended.
For a hydraulic installation/removal tool with central expansion pressure supply, screw spindle into shaft
end until correct sealing is established.
During hydraulic installation and removal, ensure that nobody is standing in the immediate vicinity of the
component to be installed/removed.
Working on electrical/electronic assemblies
Always obtain the permission of the person in charge before commencing maintenance and repair work
or switching off any part of the electronic system required to do so.
De-energize the appropriate areas prior to working on assemblies.
Do not damage cabling during removal work. When reinstalling ensure that wiring is not damaged during
operation by contact with sharp objects, by rubbing against other components or by a hot surface.
Do not secure cables on lines carrying fluids.
Do not use cable binders to secure cables.
Always use connector pliers to tighten connectors.
Subject the device or system to a function check on completion of all repair work.
Store spare parts properly prior to replacement, i.e. protect them against moisture in particular. Pack de‐
fective electronic components and assemblies in a suitable manner when dispatched for repair, i.e. par‐
ticularly protected against moisture and impact and wrapped in antistatic foil if necessary.
Working with laser equipment
When working with laser equipment, always wear special laser-protection goggles ⇒ Heavily focused ra‐
diation.
Laser equipment must be fitted with the protective devices necessary for safe operation according to
type and application.
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For conducting light-beam procedures and measurement work, only the following laser devices must be
used:
• Laser devices of classes 1, 2 or 3A.
• Laser devices of class 3B, which have maximum output in the visible wavelength range (400 to 700
nm), a maximum output of 5 mW, and in which the beam axis and surface are designed to prevent
any risk to the eyes.
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1.7 Auxiliary materials, fluids and lubricants, fire prevention and
environmental protection
Fire prevention
Rectify any fuel or oil leaks immediately; even splashes of oil or fuel on hot components can cause fires –
therefore always keep the engine in a clean condition. Do not leave cloths soaked with fluids and lubri‐
cants lying on or near the assembly or unit. Do not store inflammable material near the assembly or unit.
Do not weld pipes and components carrying oil or fuel! Before welding, clean with a nonflammable fluid.
When starting the engine with an external power source, connect the ground lead last and remove it first.
To avoid sparks in the vicinity of the battery, connect the ground lead from the external power source to
the ground lead of the engine or to the ground terminal of the starter.
Always keep suitable firefighting equipment (fire extinguishers) at hand and familiarize yourself with their
use.
Noise
Noise can lead to an increased risk of accident if acoustic signals, warning shouts or noises indicating
danger are drowned.
Wear ear protectors in work areas with a sound pressure level in excess of 85 dB (A).
Environmental protection and disposal
Modification or removal of mechanical or electronic components or the installation of additional compo‐
nents as well as the execution of calibration processes that might affect the emission characteristics of
the engine are prohibited by emission regulations. Emission control units/systems may only be main‐
tained, exchanged or repaired if the components used for this purpose are approved by MTU or equiva‐
lent components. Noncompliance with these guidelines might represent a violation of the Clean Air Act
and involves the termination of the operating license by the emission authorities. MTU does not accept
any liability for violations of the emission regulations. MTU will provide assistance and advice if emission-
relevant components are intended to be modified. The MTU Maintenance Schedules ensure the reliabili‐
ty and performance of MTU engines and must be complied with over the entire life cycle of the engine.
Use only fuel of prescribed quality to comply with emission limit values.
Dispose of used fluids, lubricants and filters in accordance with local regulations.
Within the EU, batteries can be returned free of charge to MTU FN / MTU Onsite Energy where they are
subjected to proper recycling procedures.
Auxiliary materials, fluids and lubricants
Use only fluids and lubricants that have been tested and approved by MTU.
The Fluids and Lubricants Specifications will be amended or supplemented as necessary. Before using
them, make sure you have the latest version. The latest version is also available at: http://www.mtu-on‐
line.com/mtu/mtu-valuecare/mtu-valueservice-Technische-Dokumentation.
Keep fluids and lubricants in suitable, properly designated containers. When using fluids, lubricants and
other chemical substances, follow the safety instructions that apply to the product. Take special care
when using hot, chilled or caustic materials. When using flammable materials, avoid all sparks and do
not smoke.
Used oil
Used oil contains harmful combustion residues.
Rub barrier cream into hands.
Wash hands after contact with used oil.
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Lead
• When working with lead or lead-containing compounds, avoid direct contact to the skin and do not
inhale lead vapors.
• Adopt suitable measures to avoid the formation of lead dust.
• Switch on extraction system.
• Wash hands after contact with lead or lead-containing substances.
Compressed air
Observe special safety precautions when working with compressed air:
• Pay special attention to the pressure level in the compressed air network and pressure vessel.
• Assemblies and equipment to be connected must either be designed for this pressure, or, if the per‐
mitted pressure for the connecting elements is lower than the pressure required, a pressure reducing
valve and safety valve (set to permitted pressure) must form an intermediate connection.
• Hose couplings and connections must be securely attached.
• Wear goggles when blowing off components or blowing away chips.
• Provide the snout of the air nozzle with a protective disk (e.g. rubber disk).
• First shut off compressed air lines before compressed air equipment is disconnected from the supply
line, or before equipment or tool is to be replaced.
• Unauthorized use of compressed air, e.g. forcing flammable liquids (danger class AI, AII and B) out of
containers, results in a risk of explosion.
• Forcing compressed air into thin-walled containers (e.g. containers made of tin, plastic and glass) for
drying purposes or to check for leaks, results in a risk of bursting.
• Carry out leak test in accordance with the specifications.
Paints and lacquers
• When carrying out painting work outside the spray stands provided with fume extraction systems, en‐
sure that the area is well ventilated. Make sure that neighboring work areas are not impaired.
• No open flames.
• No smoking.
• Observe fire prevention regulations.
• Always wear a mask providing protection against paint and solvent vapors.
Liquid nitrogen
• Store liquid nitrogen only in small quantities and always in regulation containers without fixed covers.
• Avoid body contact (eyes, hands).
• Wear protective clothing, protective gloves, closed shoes and protective goggles / safety mask.
• Make sure that working area is well ventilated.
• Avoid all knocks and jars to the containers, fixtures or workpieces.
Acids and alkaline solutions
• When working with acids and alkaline solutions, wear protective goggles or face mask, gloves and
protective clothing.
• If such solutions are spilled onto clothing, remove the affected clothing immediately.
• Rinse injured parts of the body thoroughly with clean water.
• Rinse eyes immediately with eyedrops or clean tap water.
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1.8 Conventions for safety instructions in the text
DANGER In the event of immediate danger.
Consequences: Death or serious injury
• Remedial action
WARNING In the event of potentially dangerous situations.
Consequences: Death or serious injury
• Remedial action
CAUTION In the event of dangerous situations.
Consequences: Minor injury or material damage
• Remedial action
NOTICE In the event of a situation involving potentially adverse effects on the product.
Consequences: Material damage.
• Remedial action
• Additional product information
Note: This manual contains highlighted safety warnings in accordance with the US ANSI Z535 standard which
begin with one of the signal words listed above depending on the severity of the hazard.
Safety instructions
1. Read and familiarize yourself with all safety notices before starting up or repairing the product.
2. Pass on all safety instructions to your operating, maintenance, repair and transport personnel.
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2 Product Summary
2.1 Engine Layout
010 Crankcase and add-on
components
020 Gear train
030 Running gear
040 Cylinder head
050 Valve gear
070 Fuel system (high pres‐
sure)
080 Fuel system (low pres‐
sure)
100 Exhaust turbocharger
110 Intercooler
120 Air intake/air supply
140 Exhaust system
170 Starting equipment
180 Lube oil system / lube
oil circuit
200 Coolant system
210 Power supply
230 Mounting/support
250 PTO systems, driving
end and free end (cou‐
pling)
500 Engine governor
Engine type designation
Explanation of engine type designation 20V 4000 Gx3
20 Number of cylinders
v Cylinder arrangement: V engine
4000 Series
G Application
X Application segment (2, 4, 6, 8)
3 Configuration status
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2.2 Overview of sensors, actuators and injectors
1 Temperature sensors
for single exhaust gas
B4.1 to B4.10 (engine
side A)
2 Sensor B34 (P-Fuel after
filter)
3 M8 (HP fuel pump ac‐
tuator)
The injectors (Y39.1 to Y39.10, engine side A) are underneath the cylinder head covers of the cylinder.
Injector replacement and necessary activities (→ Page 119).
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1 B50 (P crankcase)
2 B05.3 (P lube oil before
filter)
3 B05 (P lube oil after fil‐
ter)
4 B33 (T fuel, rail)
5 B07 (T lube oil)
6 B01 (N camshaft)
7 B48 (P fuel, rail)
8 B43 (P charge-air cool‐
ant)
9 B26 (T charge-air cool‐
ant)
10 B06 (T coolant)
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