ldw 442 crs engine maintenance
WORKSHOP MANUAL
LDW 442 CRS
AUTOMOTIVE
cod. 1-5302-838
LDW 442 CRS
AUTOMOTIVE
PREFACE
- Every attempt has been made to present within this service manual, accurate and up to date technical information.
However, development on the LOMBARDINI series is continuous.
Therefore, the information within this manual is subject to change without notice and without obligation.
- The information contained within this service manual is the sole property of LOMBARDINI.
As such, no reproduction or replication in whole or part is allowed without the express written permission of
LOMBARDINI.
Information presented within this manual assumes the following:
1- The person or people performing service work on LOMBARDINI series engines is properly trained and equipped to safely and professionally perform the subject operation;
2- The person or people performing service work on LOMBARDINI series engines possesses adequate hand
and LOMBARDINI special tools to safely and professionally perform the subject service operation;
3- The person or people performing service work on LOMBARDINI series engines has read the pertinent information regarding the subject service operations and fully understands the operation at hand.
- This manual was written by the manufacturer to provide technical and operating information to authorised
LOMBARDINI after-sales service centres to carry out assembly, disassembly, overhauling, replacement and
tuning operations.
- As well as employing good operating techniques and observing the right timing for operations, operators must
read the information very carefully and comply with it scrupulously.
- Time spent reading this information will help to prevent health and safety risks and financial damage.
Written information is accompanied by illustrations in order to facilitate your understanding of every step of the
operating phases.
Manuale officina LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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REGISTRATION OF MODIFICATIONS TO THE DOCUMENT
Any modifications to this document must be registered by the drafting body, by completing the following table.
Drafting
body
CUSE/ATLO
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Document
code
Model
N°
Edition
Revision
Issue date
Review
date
1-5302-838
51188
1°
00
23-04-2009
23-04-2009
Endorsed
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
CHAPTER INDEX LDW 442 CRS
1
GENERAL INFORMATION ON SAFETY................................................................................... 9-12
WARRANTY CLAUSES...................................................................................................................................................... 9
SERVICE GENERAL NOTES............................................................................................................................................. 9
GLOSSARY AND TERMINOLOGY..................................................................................................................................... 9
WARNINGS AND NOTES................................................................................................................................................. 10
SAFETY RULES............................................................................................................................................................... 10
GENERAL SAFETY DURING OPERATING PHASES......................................................................................................11
ENVIRONMENTAL IMPACT..............................................................................................................................................11
ENGINE ON ROTATING STAND - SAFETY PRECAUTIONS.......................................................................................... 12
2
TECHNICAL INFORMATION................................................................................................... 13-27
GENERAL DESCRIPTION OF THE ENGINE................................................................................................................... 13
PROBLEMS AND RELATED CAUSES........................................................................................................................ 14-15
DIMENSIONS................................................................................................................................................................... 16
TECHNICAL SPECIFICATIONS.................................................................................................................................. 16-17
ENGINE AND MANUFACTURER IDENTIFICATION........................................................................................................ 18
PERFORMANCE GRAPH................................................................................................................................................ 18
LDW 442 CRS ENGINE MAINTENANCE (SCHEDULED AND UNSCHEDULED).......................................................... 19
COOLANT......................................................................................................................................................................... 20
FUEL SPECIFICATIONS.................................................................................................................................................. 20
LUBRICANTS................................................................................................................................................................... 21
FUEL SUPPLY CIRCUIT.............................................................................................................................................. 22-24
LUBRICATION CIRCUIT................................................................................................................................................... 25
COOLING SYSTEM - OPERATING PRINCIPLE......................................................................................................... 26-27
3
ENGINE ELECTRICAL CONTROL.......................................................................................... 30-51
ENGINE ELECTRONIC CONTROL SYSTEM.................................................................................................................. 30
WIRING DIAGRAM OF THE ELECTRICAL/ELECTRONIC SYSTEM.............................................................................. 31
CONTROL PANEL WIRING DIAGRAM....................................................................................................................... 32-33
ENGINE ELECTRONIC CONTROL - WIRING DIAGRAM.......................................................................................... 34-35
ENGINE-VEHICLE DIALOGUE SYSTEM........................................................................................................................ 36
ENGINE ELECTRONIC CONTROL - WIRING HARNESS............................................................................................... 37
SERVICE WIRING DIAGRAM.......................................................................................................................................... 38
SERVICE WIRING HARNESS.......................................................................................................................................... 39
ENGINE WIRING DIAGRAM............................................................................................................................................ 40
ENGINE WIRING HARNESS............................................................................................................................................ 41
ACCESSORY WIRING DIAGRAM.............................................................................................................................. 42-43
CONNECTORS REQUESTED FOR INTERFACING WITH LOMBARDINI WIRING HARNESS..................................... 43
COMPONENTS OF ENGINE ELECTRONIC CONTROL SYSTEM............................................................................ 44-51
E.C.U. (Electronic control unit).......................................................................................................................................... 44
Control Unit Identification Plate......................................................................................................................................... 44
Installation Requirements.................................................................................................................................................. 44
Hall-Effect Phase Sensor.................................................................................................................................................. 45
Common Rail.................................................................................................................................................................... 45
Electronic Injectors............................................................................................................................................................ 46
IMA Management.............................................................................................................................................................. 46
Water Temperature Sensor............................................................................................................................................... 47
Oil Pressure Sensor.......................................................................................................................................................... 47
Accelerator Potentiometer inside the Cabin (Pedal-Integrated)........................................................................................ 48
Accelerator Potentiometre as an Accessory (Remote-Controlled via Accelerator Cable)................................................. 48
Glow Plugs........................................................................................................................................................................ 49
Glow Plug Absorption Curve............................................................................................................................................. 49
Speed Sensor................................................................................................................................................................... 49
Electric Fan....................................................................................................................................................................... 50
Starter Motor..................................................................................................................................................................... 50
Alternator........................................................................................................................................................................... 51
External Alternator Load Curve Graph.............................................................................................................................. 51
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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Chapter index LDW 442 CRS
4
ENGINE STORAGE AND CONSERVATION............................................................................ 54-55
HANDLING AND LIFTING................................................................................................................................................ 54
ENGINE STORAGE.......................................................................................................................................................... 55
PROTECTIVE TREATMENT............................................................................................................................................. 55
PREPARING THE ENGINE FOR OPERATION AFTER PROTECTIVE TREATMENT..................................................... 55
5
DISASSEMBLY......................................................................................................................... 56-79
RECOMMENDATIONS FOR DISASSEMBLY.................................................................................................................. 56
Alternator and Drive Belt................................................................................................................................................... 61
Alternator Drive Pulley...................................................................................................................................................... 67
Balance Countershafts...................................................................................................................................................... 77
Camshaft........................................................................................................................................................................... 72
Camshaft Cover................................................................................................................................................................ 71
Connecting Rod Big End Caps......................................................................................................................................... 75
Coolant Outlet Flange and Thermostatic Valve................................................................................................................. 66
Crankcase......................................................................................................................................................................... 76
Crankshaft......................................................................................................................................................................... 77
Cylinder Head................................................................................................................................................................... 73
Electronic Injectors............................................................................................................................................................ 64
Engine Block..................................................................................................................................................................... 77
Engine Wiring Harness................................................................................................................................................ 56-58
Exhaust Manifold............................................................................................................................................................... 59
Extracting the Electronic Injectors from the Cylinder Head............................................................................................... 65
Flywheel............................................................................................................................................................................ 70
Fuel Distributor.................................................................................................................................................................. 63
Fuel Supply Hoses............................................................................................................................................................ 61
Gear Cover........................................................................................................................................................................ 74
Glow Plugs........................................................................................................................................................................ 66
Head Gasket..................................................................................................................................................................... 74
High-Pressure Line between Injection Pump and Rail...................................................................................................... 64
High-Pressure Pump......................................................................................................................................................... 71
Injection Pump Supply Hoses...................................................................................................................................... 62-63
Injector High-Pressure Hoses...................................................................................................................................... 64-65
Injector Return Line........................................................................................................................................................... 62
Inlet Manifold..................................................................................................................................................................... 60
Intake System and Ducts............................................................................................................................................. 59-60
Oil Filter Cartridge............................................................................................................................................................. 67
Oil Pump........................................................................................................................................................................... 75
Oil Pump Gear.................................................................................................................................................................. 74
Oil Sump........................................................................................................................................................................... 75
Overpressure Return Line................................................................................................................................................. 63
Piston................................................................................................................................................................................ 76
Rail.................................................................................................................................................................................... 65
Rocker Arm Cover............................................................................................................................................................. 68
Rocker Arms and Hydraulic Tappets................................................................................................................................. 73
Service Wiring Harness................................................................................................................................................ 58-59
Speed Sensor................................................................................................................................................................... 70
Starter Motor..................................................................................................................................................................... 67
Starter Motor Support Plate.............................................................................................................................................. 70
Tightening Pulley............................................................................................................................................................... 69
Timing System............................................................................................................................................................. 68-69
Water Pump...................................................................................................................................................................... 69
Water Temperature Sensor............................................................................................................................................... 66
6
OVERHAULING AND TUNING UP........................................................................................ 80-101
RECOMMENDATIONS FOR OVERHAUL AND TUNING................................................................................................. 80
OVERHAULING THE CRANK MECHANISM AND CRANKCASE................................................................................... 80
Balance Countershafts...................................................................................................................................................... 85
Camshaft........................................................................................................................................................................... 96
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Chapter index LDW 442 CRS
Connecting Rod - Check of Axis Parallelism................................................................................................................ 86-87
Connecting Rod - Overhauling and Dimensional Check.............................................................................................. 85-86
Crankshaft......................................................................................................................................................................... 84
Crankshaft - Axial Clearance Check................................................................................................................................. 84
Cylinder Head and Components - Overhauling................................................................................................................ 91
Cylinders........................................................................................................................................................................... 82
Glow Plug Specifications and Injector Protrusion............................................................................................................. 93
Head Gasket - Determining the Thickness....................................................................................................................... 87
High-Pressure Pump.................................................................................................................................................... 97-98
Hydraulic Tappet............................................................................................................................................................... 95
Oil Pressure Relief Valve.................................................................................................................................................. 90
Oil Pump........................................................................................................................................................................... 89
Phase Sensor Plate.......................................................................................................................................................... 97
Piston........................................................................................................................................................................... 81-82
Rings................................................................................................................................................................................. 83
Timing System.................................................................................................................................................................. 94
Timing System - Timing Angle Scheme............................................................................................................................ 94
Valve Guides - Overhauling and Check............................................................................................................................ 92
Valve Seats - Check.......................................................................................................................................................... 92
Valve Springs.................................................................................................................................................................... 91
Valves - Reassembly......................................................................................................................................................... 93
Valves Guides and Housings............................................................................................................................................ 93
Vapour Recirculation Vent................................................................................................................................................. 88
Vapour Recirculation Vent - Operating Principle............................................................................................................... 88
7
REASSEMBLY...................................................................................................................... 102-132
RECOMMENDATIONS FOR REASSEMBLY................................................................................................................. 102
Air Filter........................................................................................................................................................................... 128
Air Filter Duct - Vent Duct................................................................................................................................................ 127
Air Filter Support Bracket................................................................................................................................................ 127
Alternator......................................................................................................................................................................... 126
Alternator Drive Belt........................................................................................................................................................ 126
Alternator Drive Pulley.....................................................................................................................................................117
Balance Countershafts.................................................................................................................................................... 103
Camshaft..........................................................................................................................................................................112
Camshaft Cover...............................................................................................................................................................112
Camshaft Seal Rings.......................................................................................................................................................113
Camshaft Toothed Pulley.................................................................................................................................................115
Clearance Volume............................................................................................................................................................110
Common Rail.................................................................................................................................................................. 121
Common Rail Fixing Columns - Tightening..................................................................................................................... 122
Connecting Rod Cap................................................................................................................................................ 107-108
Coolant Inlet Flange.........................................................................................................................................................118
Coolant Outlet Flange......................................................................................................................................................118
Crankcase - Fixing.......................................................................................................................................................... 105
Crankshaft....................................................................................................................................................................... 103
Crankshaft Seal Rings (Flywheel Side)............................................................................................................................113
Crankshaft Seal Rings (Timing System Side)..................................................................................................................114
Electronic Injector Fixing Bracket.....................................................................................................................................119
Electronic Injectors...........................................................................................................................................................119
Electronic Injectors - Tightening...................................................................................................................................... 122
Engine Cylinder Head......................................................................................................................................................111
Engine Wiring Harness - Installation........................................................................................................................ 129-131
Exhaust Manifold............................................................................................................................................................. 128
External Timing Belt Guard..............................................................................................................................................117
Flywheel...........................................................................................................................................................................110
Fuel Hoses...................................................................................................................................................................... 123
Gear Cover.......................................................................................................................................................................114
Glow Plugs.......................................................................................................................................................................119
High-Pressure Lines........................................................................................................................................................ 121
High-Pressure Pump................................................................................................................................................ 120-121
Injector Fittings - Tightening............................................................................................................................................ 122
Injector Hose Fittings on Rail and Injection Pump Hose - Tightening............................................................................. 122
Injector Return Line......................................................................................................................................................... 125
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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Chapter index LDW 442 CRS
Inlet Manifold................................................................................................................................................................... 127
Internal Timing Belt Guard...............................................................................................................................................114
Lower Crankcase - Half-Bearings............................................................................................................................ 104-105
Oil Filter............................................................................................................................................................................117
Oil Pump - Lobes............................................................................................................................................................ 104
Oil Pump - Plate.............................................................................................................................................................. 106
Oil Suction Pipe............................................................................................................................................................... 108
Oil Sump......................................................................................................................................................................... 108
Piston - Connecting Rod- Gudgeon pin - Assembly........................................................................................................ 107
Rail........................................................................................................................................................................... 123-124
Rocker Arm Cover........................................................................................................................................................... 123
Rocker Arms and Hydraulic Tappets................................................................................................................................111
Service Wiring Harness - Installation....................................................................................................................... 128-129
Speed Sensor................................................................................................................................................................. 109
Speed Sensor - Air gap....................................................................................................................................................110
Starter Motor................................................................................................................................................................... 125
Starter Motor Support Plate............................................................................................................................................ 109
Synchronous Timing Belt - Installation.............................................................................................................................116
Synchronous Timing Belt - Tensioning.............................................................................................................................116
Thermostatic Valve...........................................................................................................................................................118
Tightening Pulley..............................................................................................................................................................114
Timing Belt Setting...........................................................................................................................................................116
Timing System Drive Pulley.............................................................................................................................................115
Upper Crankcase - Crankshaft Half-Bearings................................................................................................................. 102
Water Pump.....................................................................................................................................................................113
Water Temperature Sensor..............................................................................................................................................118
8
TIGHTENING TORQUES AND USE OF SEALANT............................................................ 133-135
Table with Tightening Torques for Standard Screws (Coarse Thread)............................................................................ 133
Table with Tightening Torques for Standard Screws (Fine Thread)................................................................................ 133
Table with Tightening Torques of the Main Components and Use of Sealant.......................................................... 134-135
9
SPECIFIC TOOLS........................................................................................................................136
10
DIAGNOSIS.......................................................................................................................... 138-143
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
GENERAL REMARKS AND SAFETY INFORMATION
1
WARRANTY CERTIFICATE
- The products manufactured by Lombardini Srl are warranted to be free from conformity defects for a period of 24 months
from the date of delivery to the first end user.
- For engines fitted to stationary equipment, working at constant load and at constant and/or slightly variable speed within the
setting limits, the warranty covers a period up to a limit of 2000 working hours, if the above mentioned period (24 months) is
not expired.
- If no hour-meter is fitted , 12 working hours per calendar day will be considered.
- For what concerns the parts subject to wear and deterioration (injection/feeding system, electrical system, cooling system,
sealing parts, non-metallic pipes, belts) warranty covers a maximum limit of 2000 working hours, if the above mentioned
period (24 months) is not expired.
- For correct maintenance and replacement of these parts, it is necessary to follow the instructions reported in the
documentation supplied with each engine.
- To ensure the engine warranty is valid, the engine installation, considering the product technical features, must be carried out
by qualified personnel only.
- The list of the Lombardini authorized dealers is reported in the “Service” booklet, supplied with each engine.
- Special applications involving considerable modifications to the cooling/lubricating system (for ex.: dry oil sump), filtering
system, turbo-charged models, will require special written warranty agreements.
- Within the above stated periods Lombardini Srl directly or through its authorized network will repair and/or replace free of
charge any own part or component that, upon examination by Lombardini or by an authorized Lombardini agent, is found to
be defective in conformity, workmanship or materials.
- Any other responsibility/obligation for different expenses, damages and direct/indirect losses deriving from the engine use or
from both the total or partial impossibility of use, is excluded.
- The repair or replacement of any component will not extend or renew the warranty period.
Lombardini warranty obligations here above described will be cancelled if:
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Lombardini engines are not correctly installed and as a consequence the correct functional parameters are not respected
and altered.
Lombardini engines are not used according to the instructions reported in the “Use and Maintenance” booklet supplied with
each engine.
Any seal affixed to the engine by Lombardini has been tampered with or removed.
Spare parts used are not original Lombardini.
Feeding and injection systems are damaged by unauthorized or poor quality fuel types.
Electrical system failure is due to components, connected to this system, which are not supplied or installed by Lombardini.
Engines have been disassembled, repaired or altered by any part other than an authorized Lombardini agent.
- Following expiration of the above stated warranty periods and working hours, Lombardini will have no further responsibility for
warranty and will consider its here above mentioned obligations for warranty complete.
- Any warranty request related to a non-conformity of the product must be addressed to the Lombardini Srl service agents.
GENERAL SERVICE MANUAL NOTES
1 - Use only genuine Lombardini repair parts.
Failure to use genuine Lombardini parts could result in sub-standard performance and low longevity.
2 - All data presented are in metric format. That is, dimensions are presented in millimeters (mm), torque is presented in Newton-meters (Nm), weight is presented in kilograms (Kg), volume is presented in liters or cubic centimeters (cc) and pressure
is presented in barometric units (bar).
GLOSSARY AND TERMINOLOGY
For clarity, here are the definitions of a number of terms used recurrently in the manual.
- Cylinder number one: is the timing belt side piston .
- Rotation direction: anticlockwise «viewed from the flywheel side of the engine».
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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1
General remarks and safety information
SAFETY AND WARNING DECALS
- Important remarks and features of the text are highlighted
using symbols, which are explained below:
Danger – Attention
This indicates situations of grave danger which, if ignored, may seriously threaten the health and safety of individuals.
Caution – Warning
This indicates that it is necessary to take proper precautions to prevent any risk to the health and safety of individuals and avoid financial damage.
Important
This indicates particularly important technical information
that should not be ignored.
SAFETY REGULATIONS
• Lombardini Engines are built to supply their performances in a safe and long-lasting way.
To obtain these results, it is essential for users to comply with the servicing instructions given in the relative manual along with
the safety recommendations listed below.
• The engine has been made according to a machine manufacturer's specifications and all actions required to meet the essential
safety and health safeguarding requisites have been taken, as prescribed by the current laws in merit.
All uses of the engine beyond those specifically established cannot therefore be considered as conforming to the use defined
by Lombardini which thus declines all liability for any accidents deriving from such operations.
• The following indications are dedicated to the user of the machine in order to reduce or eliminate risks concerning engine operation in particular, along with the relative routine maintenance work.
• The user must read these instructions carefully and become familiar with the operations described.
Failure to do this could lead to serious danger for his personal safety and health and that of any persons who may be in the
vicinity of the machine.
• The engine may only be used or assembled on a machine by technicians who are adequately trained about its operation and
the deriving dangers.
This condition is also essential when it comes to routine and, above all, extraordinary maintenance operations which, in the latter
case, must only be carried out by persons specifically trained by Lombardini and who work in compliance with the existing
documentation.
• Variations to the functional parameters of the engine, adjustments to the fuel flow rate and rotation speed, removal of seals,
demounting and refitting of parts not described in the operation and maintenance manual by unauthorized personnel shall relieve
Lombardini from all and every liability for deriving accidents or for failure to comply with the laws in merit.
• On starting, make sure that the engine is as horizontal as possible, unless the machine specifications differ.
In the case of manual start-ups, make sure that the relative actions can take place without the risk of hitting walls or dangerous
objects, also considering the movements made by the operator.
Pull-starting with a free cord (thus excluding self-winding starting only), is not permitted even in an emergency.
• Make sure that the machine is stable to prevent the risk of overturning.
• Become familiar with how to adjust the rotation speed and stop the engine.
• Never start the engine in a closed place or where there is insufficient ventilation.
Combustion creates carbon monoxide, an odourless and highly poisonous gas.
Lengthy stays in places where the engine freely exhausts this gas can lead to unconsciousness and death.
• The engine must not operate in places containing inflammable materials, in explosive atmospheres, where there is dust that
can easily catch fire unles specific, adequate and clearly indicated precautions have been taken and have been certified for the
machine.
• To prevent fire hazards, always keep the machine at least one meter from buildings or from other machinery.
• Children and animals must be kept at a due distance from operating machines in order to prevent hazards deriving from their
operation.
• Fuel is inflammable.
The tank must only be filled when the engine is off.
Thoroughly dry any spilt fuel and move the fuel container away along with any rags soaked in fuel or oil.
Make sure that no soundproofing panels made of porous material are soaked in fuel or oil.
Make sure that the ground or floor on which the machine is standing has not soaked up any fuel or oil.
• Fully tighten the tank plug each time after refuelling.
Do not fill the tank right to the top but leave an adequate space for the fuel to expand.
• Fuel vapour is highly toxic.
Only refuel outdoors or in a well ventilated place.
• Do not smoke or use naked flames when refuelling.
• The engine must be started in compliance with the specific instructions in the operation manual of the engine and/or machine
itself.
Do not use auxiliary starting aids that were not installed on the original machine (e.g. Startpilot’).
• Before starting, remove any tools that were used to service the engine and/or machine.
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
General remarks and safety information
1
Make sure that all guards have been refitted.
• During operation, the surface of the engine can become dangerously hot.
Avoid touching the exhaust system in particular.
• Before proceeding with any operation on the engine, stop it and allow it to cool.
Never carry out any operation whilst the engine is running.
• The coolant fluid circuit is under pressure.
Never carry out any inspections until the engine has cooled and even in this case, only open the radiator plug or expansion
chamber with the utmost caution, wearing protective garments and goggles. If there is an electric fan, do not approach the engine whilst it is still hot as the fan could also start operating when the engine is at a standstill.
Only clean the coolant system when the engine is at a standstill.
• When cleaning the oil-cooled air filter, make sure that the old oil is disposed of in the correct way in order to safeguard the environment.
The spongy filtering material in oil-cooled air filters must not be soaked in oil.
The reservoir of the separator pre-filter must not be filled with oil.
• The oil must be drained whilst the engine is hot (oil T ~ 80°C).
Particular care is required to prevent burns.
Do not allow the oil to come into contact with the skin.
• Pay attention to the temperature of the oil filter when the filter itself is replaced.
• Only check, top up and change the coolant fluid when the engine is off and cold.
Take care to prevent fluids containing nitrites from being mixed with others that do not contain these substances since "Nitrosamine", dangerous for the health, can form.
The coolant fluid is polluting and must therefore be disposed of in the correct way to safeguard the environment.
• During operations that involve access to moving parts of the engine and/or removal of rotating guards, disconnect and insulate the positive wire of the battery to prevent accidental short-circuits and to stop the starter motor from being energized.
• Only check belt tension when the engine is off.
• Only use the eyebolts installed by Lombardini to move the engine.
These lifting points are not suitable for the entire machine; in this case, the eyebolts installed by the manufacturer should be
used.
GENERAL SAFETY DURING OPERATING PHASES
– The procedures contained in this manual have been tested and selected by the manufacturer’s technical experts, and hence
are to be recognised as authorised operating methods.
– A number of procedures must be carried out with the aid of equipment and tools that simplify and improve the timing of
operations.
– All tools must be in good working condition so that engine components are not damaged and that operations are carried out
properly and safely.
It is important to wear the personal safety devices prescribed by work safety laws and also by the standards of this manual.
– Holes must be lined up methodically and with the aid of suitable equipment. Do not use your fingers to carry out this
operation to avoid the risk of amputation.
– Some phases may require the assistance of more than one operator. If so, it is important to inform and train them regarding
the type of activity they will be performing in order to prevent risks to the health and safety of all persons involved.
– Do not use flammable liquids (petrol, diesel, etc.) to degrease or wash components. Use special products.
– Use the oils and greases recommended by the manufacturer.
Do not mix different brands or combine oils with different characteristics.
– Discontinue use of the engine if any irregularities arise, particularly in the case of unusual vibrations.
– Do not tamper with any devices to alter the level of performance guaranteed by the manufacturer.
SAFETY AND ENVIRONMENTAL IMPACT
Every organisation has a duty to implement procedures to
identify, assess and monitor the influence of its own activities
(products, services, etc.) on the environment.
Procedures for identifying the extent of the impact on the environment must consider the following factors:
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Liquid waste
Waste management
Soil contamination
Atmospheric emissions
Use of raw materials and natural resources
Regulations and directives regarding environmental impact
In order to minimise the impact on the environment, the manufacturer now provides a number of indications to be followed
by all persons handling the engine, for any reason, during its
expected lifetime.
- All packaging components must be disposed of in accordance with the laws of the country in which disposal is taking place.
- Keep the fuel and engine control systems and the exhaust
pipes in efficient working order to limit environmental and
noise pollution.
- When discontinuing use of the engine, select all components according to their chemical characteristics and dispose of them separately.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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1
General remarks and safety information
ENGINE ON ROTATING STAND - SAFETY PRECAUTIONS
Important
- Before removing the engine from the vehicle on which it is installed, disconnect the power supply, detach the fuel and
coolant supply, and all connections including the mechanical ones.
- Attach the engine to a suitable lifting device (lifting beam).
- Hook the lifting device in the engine lifting points, as shown in the figure.
- Before lifting, make sure the weight is correctly balanced by checking its barycentre.
- Close all engine openings accurately (exhaust, intake, etc.), then wash the outside and dry with a jet of compressed
air.
- Place the engine on a rotating stand to easily work on it.
Important
The bracket of the lifting points have been designed to lift
the engine only. They are not intended nor approved to lift
additional weights.
Do not use different methods to lift the engine than those
described herein. In case different methods are used, no
warranty shall be granted for any consequential damage.
Note: According to the intervention to be carried out, the
engine may also be positioned on a workbench
and secured using special support brackets (not
supplied).
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
TECHNICAL INFORMATION
2
GENERAL DESCRIPTION OF THE ENGINE
Main Components
6
16
15
1
10
12
4
2
7
8
9
11
3
5
13
14
1)
2)
3)
4)
5)
6)
7)
8)
Cylinder Head
Engine Block
Crankcase
Timing System
Flywheel
Intake Assembly
Vent Circuit
Alternator
9)
10)
11)
12)
13)
14)
15)
16)
Oil Filter
Exhaust Manifold
Oil Dipstick
Starter Motor
Oil Sump
Oil drain plug
Acoustic Insulation Panel
Oil Refill Plug
Description
- 4-stroke, 2 in-line cylinders Diesel engine.
- Aluminium alloy cylinder block and head.
- Timing system with two valves per cylinder, controlled by overhead camshaft driven by synchronous belt, roller rocker arms
and hydraulic tappets.
- Electronically controlled direct injection (Common Rail).
- Forced lubrication by means of trochoid oil pump driven by left balance shaft.
- Double balance countershaft (total balancing of first order alternating forces).
- Forced circulation liquid-cooling system.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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2
Technical information
PROBLEMS AND RELATED CAUSES
THE ENGINE MUST BE STOPPED IMMEDIATELY WHEN:
1) - The engine rpms suddenly increase and decrease;
2) - A sudden and unusual noise is heard;
3) - The colour of the exhaust gas suddenly darkens;
4) - The oil pressure indicator light turns on while running;
5) - The coolant temperature indicator light turns on while running;
TABLE OF ANOMALIES ACCORDING TO THEIR SYMPTOMS
The following table suggests the probable causes of some anomalies that may appear during engine operation.
Always proceed systematically. Start from the basic checks before disassembling the engine or replacing its components.
The Warning Lamp
is ignited
High noise level
Inadequate
performance
Engine overheats
Oil and fuel dripping
from the exhaust
Excessive oil
consumption
Oil level increase
Oil preassure too low
White smoke
Black smoke
Non-uniform speed
No acceleration
Engine starts but stops
POSSIBLE CAUSE
Engine does not start
TROUBLE
Clogged fuel hoses
FUEL
CIRCUIT
Clogged fuel filter
Air or water in the fuel supply circuit
Clogged tank cap breather
Faulty fuel pump
Lack of fuel
ELECTRIC
SYSTEM
Glow plug fuse burnt-out
Flat battery
Inefficient or wrong cable connection
Faulty starter switch
Faulty starter motor
MAINTENANCE
Faulty glow plugs
Clogged air filter
Excessive idle operation
Incomplete running-in
SETTINGS REPAIRS
Worn out or stuck rings
Worn out cylinders
Worn out valve guides
Bad valve seal
Crankshaft/Connecting rod bearings worn out
Cylinder head gasket damaged
Faulty valve timing
- 14 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Technical information
2
The Warning Lamp
is ignited
High noise level
Inadequate
performance
Engine overheats
Oil and fuel dripping
from the exhaust
Excessive oil
consumption
Oil level increase
Oil preassure too low
White smoke
Black smoke
Non-uniform speed
No acceleration
Engine starts but stops
POSSIBLE CAUSE
Engine does not start
TROUBLE
Excessive oil level
LUBRICATION
CIRCUIT
Low oil level
Dirty or blocked pressure regulating valve
Worn oil pump
Air in the oil suction pipe
Oil sump suction pipe clogged
INJECTION
Oil sump drainage pipe clogged
Damaged injector
Damaged high-pressure pump
Wrong injector IMA codes
Insufficient coolant
Defective fan, radiator, or radiator cap
COOLING
CIRCUIT
Defective thermostatic valve
Coolant leaks from the radiator, ducts,
crankcase or water pump.
Inside of radiator or coolant lines clogged
Defective or worn water pump
Heat exchange surface of the radiator clogged
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 15 -
2
Technical information
OVERALL DIMENSIONS
DIMENSIONS (mm)
A
318
D
189,1
G
525,7
M
220,5
B
157,2
E
475,1
H
350,6
N
500
C
98
F
212,5
L
175,1
P
314,8
GENERAL INFORMATION
Operating cycle
Cylinders
Bore x stroke
Displacement
Compression rate
Suction
Cooling
Crankshaft rotation
Combustion sequence
Timing System
Valves
Shaft
Tappets
Injection
Engine dry weight
Maximum tilt during operation
Maximum tilt during operation
Volume of sucked air (4,400 rpm)
Minimum volume of radiator cooling air
(at static pressure of 0 mm H2O)
Four strokes Diesel
2 in-line
n.
mm
cm3
68x60,6
440
20:1
Dry-type air filter
Liquid
Anticlockwise (seen from flywheel side)
360°
Crankshaft degrees
Single shaft driven by synchronous toothed belt
n.
2 for cylinder
overhead camshaft
hydraulic
electronically-controlled direct injection (Common Rail)
Kg
48.5
less than 1 minute
less than 30 minutes
l/min
m3/h
25°
15°
820
880
POWER AND TORQUE
Peak rpm
Peak power
(NB 80/1269/EEC - ISO 1585 - DIN 7020)
Maximum torque (N power at 2,000 rpm)
Admissible axial load on crankshaft
- 16 -
giri/min.
kW
4'400
8,5
Nm
Kg
21
80
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Technical information
2
CONSUMPTIONS AT MAXIMUM POWER
Specific fuel consumption
Oil consumption
g/kWh
g/h
320
0,0035
FUEL SUPPLY CIRCUIT
Fuel type
Fuel supply
Fuel filter
Filtering surface
Filtering capacity
Maximum circuit pressure
Automotive Diesel fuel
Electric pump
cartridge
cm2
2'400
2÷3
0.5
µm
bar
LUBRICATION CIRCUIT
Totally forced
Trochoid pump
Lubrication type
Circuit supply
Oil maximum quantity
Oil maximum quantity
filter included (I)
filter excluded (I)
2,1
2
Oil pressure switch
Switching pressure (minimum value)
Oil filter
bar
0,3
bar
bar
µm
bar
cm2
Maximum operating pressure
Maximum bursting pressure
Filtering capacity
By-pass valve calibration
Filtering surface
External, full flow
6
20
15
1,3 ÷ 1,9
580
COOLING CIRCUIT
Coolant
Water pump
Thermostatic valve
Opening temperature
Stroke at 94°C
Liquid recirculation (from ∆p 0,5 bar)
50% decalcified water - 50% anti-freeze liquid
on engine block, driven by timing belt
°C
mm
l/h
78°÷82°
7
30÷80
ELECTRICAL INSTALLATION - ELECTRIC FAN
Rated voltage
Alternator (rated voltage)
External alternator (rated current)
Starter motor power
System electrical consumption, excepted: glow plugs,
electric pump, electric fan, starter motor
Coolant temperature indicator light sensor
Electrical circuit
Supply voltage
Absorbed power
Indicator light operating temperature
V
V
12
14
A
45
kW
1,1
W
0,35
Unipolar system
V
W
°C
6÷24
3
106°÷108°
Battery not supplied by Lombardini
Recommended battery:
12 V 44 Ah / 400 A DIN
12 V 44 AH / 790 A EN
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 17 -
2
Technical information
ENGINE AND MANUFACTURER IDENTIFICATION
The identification plate shown is applied directly on the engine.
It shows the following information:
A) Manufacturer identification
B) Engine type
C) Engine serial number
D) Peak rpm
E) Customer version number (K no.)
F) Approval data
PERFORMANCE GRAPH
Curve at 4kW at 3,600 rpm
Curve at 8,5kW at 4.400 r.p.m.
Legend
N* (80/1269/EEC-ISO 1585) = Power curve.
Automotive power: discontinuous services at variable
RPM and load.
MN* =Torque curve
C* =specific consumption curve
* The above curves are approximate since they depend on
applications and on engine mapping.
- The above power levels refer to the engine equipped with
air filter, muffler, fully broken-in suction fan, and ambient
conditions of 20°C and 1 bar.
- The maximum power is guaranteed with a tolerance of 5%.
- 18 -
- These power rates are reduced by approx. 1% every 100m
of altitude and by 2% for every 5°C exceeding 25°C.
Note: Please contact Lombardini for power, torque, and
specific consumption curves at different speeds from
the above.
Caution – Warning
Non-approval by Lombardini for any modifications
releases the company from any damages incurred by the
engine.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Technical information
2
LDW 442 CRS ENGINE MAINTENANCE
Important
Non compliance with the operations described in the table involves the risk of technical damages to the engine and
vehicle. Any non compliance makes the warranty become null and void.
LDW 442 CRS ENGINE UNSCHEDULED MAINTENANCE
CHANGE
- Engine oil
- Oil filter
ONLY AFTER FIRST 1,000 KM
CHECK
- Fuel hoses and connections
- Coolant
- Alternator belt tension
AFTER FIRST 1,000 KM
LDW 442 CRS ENGINE SCHEDULED MAINTENANCE
PERIODICITY IN KM (PER 1,000 KM)
10
20
30
40
50
60
70
80
90
100
OPERATION DESCRIPTION
CLEANING
AND
CHECKING
Radiator fins
Engine oil level
Oil vapour recirculation system
EVERY 2,500 km
Fuel hoses and fittings
Coolant level
Alternator belt tension
EVERY 2,500 km
CHANGE
Air filter element
Engine oil
Oil filter
Fuel filter
Air filter cartridge (**)
Coolant
Alternator belt
Timing belt (*)
Tightening pulley
Fuel hoses and safety filter
Important
Even if the prescribed km have not been covered, the following items must be changed or replaced:
-
engine oil, after one year
-
coolant, after two years
-
alternator belt, after four years
-
timing belt, after four years
After 100,000 km, continue with the same maintenance intervals.
(*) Once removed, the timing belt must be replaced, even if it has not reached its prescribed service life.
(**)The period of time that must elapse before cleaning or replacing the filter element depends on the environment in
which the engine operates. The air filter must be cleaned and replaced more frequently under very dusty conditions.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 19 -
2
Technical information
COOLANT
An anti-freeze protection liquid (eg. AGIP ANTIFREEZE SPEZIAL) – mixed with 50% decalcified water – must be used.
As well as lowering the freezing point, the permanent liquid also raises the boiling point and protects the whole circuit from
corrosion.
FUEL RECOMMENDATIONS
Purchase diesel fuel in small quantities and store in clean, approved containers. Clean fuel prevents the diesel fuel injectors and
pumps from clogging. Do not overfill the fuel tank.
Leave room for the fuel to expand. Immediately clean up any spillage during refueling.
Never store diesel fuel in galvanized containers; diesel fuel and the galvanized coating react chemically to each other, producing
flaking that quickly clogs filters or causes fuel pump or injector failure.
High sulfur content in fuel may cause engine wear. In those countries where diesel has a high sufur content, its is advisable to
lubricate the engine with a high alkaline oil or alternatively to replace the lubricating oil recommended by the manufacturer more
frequently. The regions in which diesel normally has a low sulfur content are Europe, North America, and Australia.
PRESCRIBED LUBRICANT
Fuel with low sulphur content
API CF4 - CG4
Fuel with high sulphur content
API CF
FUEL TYPE
For best results, use only clean, fresh, commercial-grade diesel fuel. Diesel fuels that satisfy the following specifications are
suitable for use in this engine: ASTM D-975 - 1D or 2D, EN590, or equivalent.
FUELS FOR LOW TEMPERATURES
It is possible to run the engine at temperatures below 0°C using special winter fuels. These fuels reduce the formation of
paraffin in diesel at low temperatures. If paraffin forms in the diesel, the fuel filter becomes blocked interrupting the flow of fuel.
Fuel can be:
- Summer
- Winter
- Alpine
- Arctic
up to
up to
up to
up to
0°C
-10°C
-20°C
-30°C
BIODIESEL FUEL
Fuels containing less than 20% methyl ester or B20, are suitable for use in this
engine. Biodiesel fuels meeting the specification of BQ-9000, EN 14214 or equivalent are recommended. DO NOT use vegetable oil as a biofuel for this engine.
Any failures resulting from the use of fuels other than recommended will not be
warranted.
AVIATION FUEL
Aviation fuels suitable for use in this engine include JP5, JP4, JP8 and, JET-A (if
5 percent oil is added).
- 20 -
EMISSION CONTROL INFORMATION
LOW SULFUR FUEL OR
ULTRA LOW SULFUR FUEL ONLY
EPA /CARB emission label must be
attached near the fuel inlet.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
2
Technical information
LUBRICANTS
Recommended oil
Engine oil capacity
Description
Oil type
Engine
oil
Agip SINT COMMON RAIL 5W40
Oil characteristics
API CF-4
ACEA B3 - B4
Oil volume at max. level (including oil filter)
Litres
2,1
Oil volume at max. level (without filter)
Litres
2,0
SAE classification
- - - - - - - + + + + + + + + + +
40 35 30 25 20 15 10 5 0 5 10 15 20 25 30 35 40 45 50
SAE 10W*
In the SAE classification oils are identified according
to viscosity without considering any other qualitative
characteristic.
The first number refers to the viscosity when cold, for use
during winter (W= winter), while the second number is for
viscosity at high temperatures.
The criteria for choosing an oil must include the minimum
ambient temperature to which the engine is to be exposed
during the winter and the maximum temperature during
operation in the summer.
Monograde oils are generally used when the operating
temperature varies little.
Multigrade oils are less sensitive to temperature variations.
SAE 20W*
SAE 30*
SAE 40*
SAE 10W-30**
SAE 10W-40**
SAE 10W-60**
SAE 15W-40 **
SAE 15W-40 **
SAE 20W-60 **
SAE 5W-30 ***
SAE 5W-40 ***
SAE 0W-30 ***
* Mineral base
** Semi-synthetic base
*** Synthetic base
API/MIL Sequences
BENZINA - ESSENCE - PETROL
DIESEL
API
BENZIN - GASOLINA
CH-4 CG-4 CF-4 CF-2 CF CE CD CC
MIL
SC SD SE SF SG SH SJ
SL
L- 46152 D / E
CORRENTI - CURRENT
OBSOLETI - OBSOLETE
Key to abbreviations
A.P.I.
MIL
ACEA
: (American Petroleum Institute)
: USA military specifications for engine oils issued for logistics reasons
: European Automobile Manufacturers Association
ACEA Standards – ACEA sequences
PETROL
A1 = Low-viscosity, for friction reduction
A2 = Standard
A3 = High performance
LIGHT DIESELS
B1 = Low-viscosity, for friction reduction
B2 = Standard
B3 = High performance (indirect injection)
B4 = High quality (direct injection)
HEAVY DIESELS
E1 = Obsolete
E2 = Standard
E3 = Heavy conditions (Euro 1 - Euro 2 engines)
E4 = Heavy conditions (Euro 1 - Euro 2 - Euro 3 engines)
E5 = High performance in heavy conditions (Euro 1 Euro 2 - Euro 3 engines)
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 21 -
2
Technical information
FUEL SUPPLY CIRCUIT
Rif.
1
2
3
4
5
6
7
8
9
10
11
- 22 -
Description
Tank (not supplied)
Electric fuel pump
Fuel filter
Safety in-line filter
Common Rail
High-pressure pump
Electronic injectors
Return pressure regulating valve
Distributor
Pressure sensor
Pressure regulator
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Technical information
2
FUEL FILTER
A fuel filter is supplied with the engine, to be mounted on the
vehicle frame.
Components
1
1.Air bleeding plug
2.Water in fuel sensor
3.Cartridge
3
2
1
Description
Filtering surface
Filtering capacity
Max operating pressure
Max delivery
Value
2.400 cm2
2 µm
2.0 Bar
190 litres/hour
WATER IN FUEL SENSOR - WIRING DIAGRAM
FUEL DISTRIBUTOR
Key to components:
1. Injector 2 return line
2. Injector 1 return line
3. Pump return line (quick-coupling 5/16)
4. Non-return valve for injector return line
5. Rail return line
6. Return line outlet to tank
7. Inlet from fuel filter
8. Safety fuel filter
9. Delivery to high-pressure pump (quick-coupling 3/8)
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 23 -
2
Technical information
ELECTRIC PUMP
Features:
Voltage:������������������������������������������ 12 V;
Max absorbed current:������������������� 1.5 A;
Min pump delivery: ������������������������ 24 l/h
Self-adjusting pressure:������������������ 0.50 bar
Operating pressure:������������������������ 0.20 bar
Working temperature���������������������� -30/+70°C.
INLET
OUTLET
Connector: AMP 282104/1
INJECTION PUMP
Description
Pumping element
Total stroke
Working stroke
Pre-stroke
inlet
- 24 -
Value
Ø 5.5 mm
5.7 mm
3.5 mm
2.2 mm
return
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Technical information
2
LUBRICATION CIRCUIT
Rif.
1
2
3
4
5
6
7
8
9
10
Description
Pressure switch
Oil sump suction
Oil filter cartridge
Oil pump
Oil pressure regulating valve
Oil drain plug
Oil return line
Oil dipstick
Vent system
Oil filler cap
In the sections in red the oil is under pressure, in the
sections in blue the oil is in the return phase, i.e. not
under pressure.
The oil pump is driven by the left balance shaft, seen
from timing system side.
OIL PUMP
Balance shaft
Countersunk
head screws
External lobe
Lower
crankcase
Reference
Features:
Closing
plate
Key
The oil pump is a trochoid-type lobe pump, and it is
driven by the left balance shaft. The pump casing is
partly integrated in the upper crankcase and partly in
the lower one. The internal lobe is keyed onto the left
balance shaft.
It is compulsory to assemble the external lobe with
its reference turned outside, so that it is visible to the
operator, as shown in the figure.
Pump type: lobe pump
Upper
crankcase
Pump drive:
gear driven by
crankshaft and installed on left balance shaft
Pressure regulating valve: installed on crankcase
Internal lobe
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 25 -
2
Technical information
COOLING SYSTEM OPERATING PRINCIPLE
Rif.
1
2
3
4
5
6
- 26 -
Description
Cab heating
Thermostatic valve
Liquid circulating pump suction
Liquid circulating pump
Liquid outlet from engine
Water temperature sensor
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
2
Technical information
WATER PUMP
Features:
. Delivery ................................................................. 75 l/min
. Rpm........................................................................ 4,400
. Gear ratio (Rpmpump/Rpmengine)........................ 0.96
. Number of pump revolutions.................................. 4,224
. Max working time................................................... 130°C
Water delivery graph (l/min)
Delivery (l/min)
Total delivery with thermostat open (95°C),
under variation of the number of revolutions
Pump speed (rpm)
Dp (bar)
System curve with thermostat open (95°C)
Total delivery (l/min)
Air bleeding hole
THERMOSTATIC VALVE
Features:
Temperature for opening start:.............. 80°C
Temperature for opening end:............... 95°C
Lift:......................................................... 7 mm
Water recirculation:................................30÷80 l/h
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 27 -
2
Technical information
INTAKE SYSTEM
AIR FILTER
The air filter is a dry-type one, with a replaceable paper filter cartridge.
The filter intake must be positioned in a cool area.
The temperature of the air sucked must never exceed ambient
temperature by more than 10°C (if you are using a pipe, check
that pipe length is 400 mm max and that it is the straightest possible).
Components:
1. Filter body
2. Filtering cartridge
3. Cover
4. Dust exhaust valve
5. Articulated fastener
- 28 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Note
2
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 29 -
3
ENGINE ELECTRICAL CONTROL
ENGINE ELECTRONIC CONTROL SYSTEM
Power relay
Engine revolutions
Electric
fuel pump relay
Engine phase
Electric fan relay
Accelerator
(2 gangs)
Glow plug relay
Water
temperature
Electronic injector 1
Pressure of Diesel
fuel in rail
Electronic injector 2
Vehicle speed
(on gearbox)
Rail pressure
regulator
Battery voltage
Engine speed for
revolution indicator
Key (15/54)
Water temperature
indicator light
Idle position
(ON/OFF)
Stop position
(ON/OFF)
Injection failure
indicator light
Glow plugs
indicator light
Diagnosis
- 30 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
WIRING DIAGRAM OF THE ELECTRICAL/ELECTRONIC SYSTEM
TRAVEL DIRECTION
ENGINE COMPARTMENT
CABIN
Key to components:
The dotted parts are not supplied
by Lombardini.
A =
B =
C =
E =
M =
G =
H =
H2 =
L =
S =
R =
Z =
ECU A Connector
ECU B Connector
Vehicle interface connector
Accessory connector (radiator electric fan, water
in fuel filter sensor and electric fuel pump)
Diagnostic connector
Instrument panel
Accelerator pedal support equipped with potentiometer
Remote accelerator potentiometer (as an accessory)
Relay and fuse boxes (for engine)
Service connector
Battery
Battery connector
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 31 -
3
Engine electrical control
INSTRUMENT PANEL WIRING DIAGRAM
Wiring diagram of the instrument panel with accelerator pedal (for engines equipped with accelerator potentiometer
inside the cabin)
STARTER FUSE 25 A
FUSE 5 A
SAFETY RELAY
FUSE 15 A
Switch STOP
STARTER RELAY
IDLE
switch
MAIN FUSE
Key to components:
N = idle position indicator light
W = injection failure indicator light
TH2O = water temperature indicator light
C = glow plugs indicator light
SH2O = Indicator light for H2O in fuel filter
A = alternator indicator light
Poil = oil pressure indicator light
B = stop indicator light/resistance 1kΩ/0.25 W
- 32 -
rpm = revolution indicator
Km = odometer
( 30 ) = bat
( 50 ) = key
( 15-54 ) = Key - first trip
D = accelerator connector
C = cabin interface connector
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
Wiring diagram of the instrument panel without accelerator pedal (for engines with accelerator potentiometer as an
accessory)
STARTER FUSE 25 A
FUSE 5 A
SAFETY RELAY
FUSE 15 A
Switch STOP
STARTER
RELAY
IDLE
switch
MAIN FUSE
Key to components:
N = idle position indicator light
W = injection failure indicator light
TH2O = water temperature indicator light
C = glow plugs indicator light
SH2O = Indicator light for H2O in fuel filter
A = alternator indicator light
Poil = oil pressure indicator light
B = stop indicator light/resistance 1kΩ/0.25 W
rpm = revolution indicator
Km = odometer
( 30 ) = bat
( 50 ) = key
( 15-54 ) = Key - first trip
C = cabin interface connector
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 33 -
- 34 Electronic
control unit
Fuse/relay
G = yellow
N = black
GR = gray
R = red
BL = blue
M = brown
V = green
B = white
C = light blue
A = orange
RA = pink
VI = purple
Key to cable colours:
E =accessory interface onnector
C = cabin interface connector
B = ECU B Connector
M = diagnostic interface connector
S = service interface connector
R1= fan 30A relay
R3= electric fuel pump relay 30A
R4= general 30A relay
R4= glow plugs 70A relay
F2 / F3 / F6 = 10A fuse
F5 / F4 / F1 = 15A fuse
F9 / F10 = 25A fuse
Z+/Z- = battery connectors
Key to components:
3
Engine electrical control
ELECTRONIC ENGINE CONTROL WIRING DIAGRAM
Fuse/relay wiring diagram for engines with accelerator potentiometer inside the cabin
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Electronic
control unit
Fuse/relay
G = yellow
N = black
GR = gray
R = red
BL = blue
M = brown
V = green
B = white
C = light blue
A = orange
RA = pink
VI = purple
key to cable colours:
E = accessory interface
connector
C = cabin interface connector
B = ECU B Connector
M = diagnostic interface
connector
S = service interface connector
R1= fan 30A relay
R3= electric fuel pump
relay 30A
R4= general 30A relay
R4= glow plugs 70A relay
F2 / F3 / F6 = 10A fuse
F5 / F4 / F1 = 15A fuse
F9 / F10 = 25A fuse
Z+/Z- = battery connectors
Key to components:
Engine electrical control
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
3
Fuse/relay wiring diagram for engines with accelerator potentiometer supplied as an accessory
- 35 -
3
Engine electrical control
ENGINE-VEHICLE DIALOGUE SYSTEM
Key 50
Odometer control
Revolution indicator control
Control for alternator indicator light
Control for oil low pressure indicator light
Control for glow plug indicator light
Control for injection failure indicator light
Control for coolant high temperature indicator light
Control for water in fuel indicator light
6-gangs accelerator pedal
Signal for stop pressed
Signal for gearbox in idle position
ht
In
in ject
di io
ca n
to fa
r l ilu
ig re
ht
H
ig
h
in te
di m
ca p
to er
r l at
ig ur
ht e
W
in at
di er
ca in
to f
r l ue
ig l
ht
in Glo
di w
ca p
to lu
r l gs
ig
ht
di
in
il
O
A
lte
rn
at
o
ri
ca
to
nd
rl
ig
ic
at
o
rl
ig
ht
INSTRUMENT PANEL SCHEME
Key
Odometer
Idle
position
Revolution indicator (optional)
6-gangs
accelerator pedal
Stop
Speedometer-Odometer signal characteristics:
- 12-teeth phonic wheel on wheel axis
- Hall-effect sensor, 12 V power-supplied
- Squared waveform with 12 peaks 12 V per phonic wheel revolution (with Lombardini gearbox)
Revolution indicator specifications:
- Squared waveform with 2 peaks 12 V per engine revolution
- 36 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
ENGINE ELECTRONIC CONTROL - WIRING HARNESS
Rif.
B
C
E
M
RF
S
Z
Description
ECU B connector
Cabin connector
Accessory connector
Diagnostic connector
Relay and fuse box
Service connector
Battery connectors
Important
Components E and C differ according to the type of
potentiometer (in cabin or as an accessory). Components
E and C for engines with accelerator potentiometer
inside the cabin will not work on engines with accelerator
potentiometer as an accessory, and vice-versa.
RELAY AND FUSE BOX - DESCRIPTION
Rif.
F1
F2
F3
F4
F5
F6
F9
F10
Description
Fan relay
Electric fuel pump relay
ECU B 50 - Diagnosis 16
ECU B 4 - 6
ECU B 5
Diagnosis 1 - ECU B 23
Glow plugs
Glow plugs
Rif.
R1
R3
R4
RC
Description
Fan relay
Electric fuel pump relay
General relay
Glow plug relay
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- 37 -
3
Engine electrical control
SERVICE WIRING DIAGRAM
Key to abbreviations:
Key to cable colours:
S = Service connector
G = 3-WAY SPEED SENSOR MTA C280
H = OIL PRESSURE SENSOR
V = PIN 55 CONNECTOR "A"
MOT = starter motor
ALT = alternator
CN 1 = glow plug 1
CN 2 = glow plug 2
(50) = Key
(30) = Bat
A = orange
N = black
GR = gray
R = red
V = green
B = white
C = light blue
- 38 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
SERVICE WIRING HARNESS
Description
ALT Alternator
CN1 Glow plug 1
CN2 Glow plugs 2
Speed sensor (connected to gearbox)
G
Oil pressure sensor
H
MOT 50 of starter motor
Service connector
S
ECU A alternator wiring harness
V
Rif.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 39 -
L = Crankshaft sensor (RPM) J.P.T. FExFE black - high spring
T = Rail pressure regulator - Bosch Purple
N = Cylinder 1 injector - Bosch Purple
O = Cylinder 2 injector - Bosch Purple
P = H2O temperature sensor J.P.T. FExFE gray - low spring
V = alternator PIN "IG"
Q = Phase sensor - Bosch Purple
R = Rail pressure sensor - Bosch Yellow
A = ECU A
TW =
=
(30)
=
(50) (15-54) =
"twisting" 40 spires/m
Battery
Key
Key - first trip
- 40 G = yellow
N = black
GR = gray
R = red
BL = blue
M = brown
V = green
B = white
C = light blue
Key to cable colours
3
Engine electrical control
ENGINE WIRING DIAGRAM
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
ENGINE WIRING HARNESS
Rif.
A
L
N
O
P
Q
R
T
V
Description
ECU A engine
Speed sensor
Electronic injector connector
Electronic injector connector
Coolant temperature
Phase sensor
Rail pressure sensor
Rail pressure regulator
Alternator management on service wiring harness
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 41 -
3
Engine electrical control
ACCESSORY WIRING DIAGRAM
Accessory wiring diagram without accelerator pedal connector
(for engines with accelerator potentiometer inside the cabin)
WATER IN FUEL
SENSOR
FUEL PUMP
Key to cable colours:
G = yellow
N = black
GR = gray
R = red
BL = blue
M = brown
V = green
B = white
C = light blue
A = orange
RA = pink
VI = purple
- 42 -
E = accessory interface connector
V = fan
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
Accessory wiring diagram with accelerator pedal connector
(for engines with accelerator potentiometer as an accessory)
WATER IN FUEL
SENSOR
Key to cable colours:
G = yellow
N = black
GR = gray
R = red
BL = blue
M = brown
V = green
B = white
C = light blue
A = orange
RA = pink
VI = purple
FUEL PUMP
E = accessory interface connector
V = fan
D = accelerator pedal connector
CONNECTORS REQUESTED FOR INTERFACING WITH LOMBARDINI WIRING HARNESS
Description
Cabin interface connection
Accelerator pedal connection
Accessory interface connection
Power supply connection
Water in fuel filter sensor connection
Rif.
C
E
Z
Manufacturer
FRAMATOME CONNECTORS
DELPHI
TYCO
MTA Spa
TYCO
Reference Code
HCCMHPE24BKAFSV
15326829
Connector: 174657-2
Terminals: 174658-7
45.40300
Connector: 282191-1
- Battery not supplied by Lombardini
- Recommended battery: 12 V 44 Ah / 400 A
Important
- Never disconnect the battery cables immediately after engine stop.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 43 -
3
Engine electrical control
COMPONENTS OF THE ENGINE ELECTRONIC CONTROL SYSTEM
Identification
plate
ECU (Electronic control unit)
Connector B
Connector A
Control unit for engine and vehicle management.
Important
The control unit must be used only with the calibration
defined by Lombardini s.r.l. for every single engine.
Dissipator
Cover
Air valve
Control unit identification plate
(Example)
1.Engine type
2.Approval code
3.Customer version number (K no.)
4.Engine s/n bar code
5.Engine s/n
- The control units are not interchangeable nor modifiable.
- Each control unit is accompanied by its adhesive identification plate.
Installation prescriptions
-
-
-
-
-
-
-
- 44 -
Protection degree: 1P 6K/9K.
Max continuous duty temperature: 115°C.
Storing temperature: 125°C.
Do not install the control unit on the engine. Always install it on
the vehicle frame, in a cool area protected against shocks and
humidity.
The ECU must always be connected to ground, for example
by means of the four fixing points of the ECU to the vehicle
bracket. Make sure the connection is good (avoid painted or
insulated parts).
As an alternative, connect one of the fixing points of the ECU
mechanics to a specific grounding plate, by means of a cable
having a section of 4 mm2 and length equal or below 300
mm. Always make sure the electrical contact is correct.
When choosing the position of the control unit in an
application, check that the air valve is protected against jets of
battery liquid or direct water jets during engine washing.
To avoid infiltrations in the wiring harness, make sure the
connection area (ECU connector) is not the lowest point of the
wiring harness.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
HALL-EFFECT PHASE SENSOR
Installed on the cylinder head.
This sensor reads the signal by means of a phase plate on the
camshaft.
Its function consists in recognizing the correct phase of the two
pistons which are carrying out the upstroke and downstroke at
the same time.
The air gap value is 0.3÷1.2 mm.
Tighten the plate fastening screw to 10 Nm.
COMMON RAIL
Components:
1. Pressure sensor
2. Pressure regulator
3. Common rail
4. High-pressure pump
5. Pressure regulator return line
The fuel is put under pressure by the high-pressure pump,
driven by the roller tappet in contact with the camshaft.
The cam driving the pump has a double lift that provides a
delivery for every injection.
The quantity of fuel put under pressure by the pump always
exceeds the real needs of fuel.
1 - Pressure sensor
1
It sends a feedback signal to the injection control unit to adjust
the injection pressure and duration.
When reassembling, tighten to a torque of 140 Nm.
2 - Pressure regulator
2
3
According to the signals sent by the engine control unit, it
adjusts the pressure inside the rail by means of a ball valve that
discharges the fuel in the low pressure line connected to the
tank.
The regulator has an internal solenoid controlled by the engine
control unit.
When the duty cycle is at 0%, the solenoid is not powered and
the rail has a minimum pressure which is due to the pre-load of
the ball valve spring.
3 - Rail
Its internal volume has been enhanced to obtain the best
compromise possible between: (1) the need of minimizing the
pressure peaks resulting from the cyclicity of the high-pressure
pump delivery and the opening of the electronic injectors on the
one hand, and (2) the improved response speed of the system to
the requests of the engine control unit on the other hand.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 45 -
3
Engine electrical control
ELECTRONIC INJECTORS
The electronic injectors are assembled on the cylinder head and
are controlled by the injection control unit.
Electronic injector operating conditions
Operating pressure
250 ÷ 1600 Bar
Return circuit pressure
0,3 ÷ 0,4 Bar
Blow-by pressure
1700 ÷ 1800 Bar
Fuel temperature
-30 ÷ 115° C
Over-pressure temperature (return)
max 125° C
External temperature
-30 ÷ 120° C
No. of holes and diameter
5 x 0,123 mm
IMA Management
During the test phase, the characteristics of the injectors are tested under different conditions of pressure/delivery.
Any injector that does not comply with a specific standard is discarded. The approved injectors are classified using a 9-digits
alphanumeric code (IMA code), marked by means of laser-writing on the upper part of the electromagnet (pos. A).
This procedure allows combining the manufacturing characteristics of each injector with a specific software strategy of the engine
control unit, thus improving the injector performances and reducing the polluting emissions.
The IMA procedure allows recovering the manufacturing tolerances of each injector tested.
Any time one or more injectors (or the ECU itself) are replaced, the new codes have to be stored in the memory to implement the
corrections.
When installing the control unit, the single code has to be stored. In case of replacement of one or more injectors, the diagnostic
tool must be used to enter the code of the new injector (see IMA code storing on page 142).
Main components of the electronic injector
A
IMA code
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Pressure rod
Needle
Nozzle
Coil
Pilot valve
Ball valve
Control area
Supply volume
Control volume
Fuel return (low pressure)
Control line
Supply line
Electrical connection
High-pressure fuel inlet union
Spring
Injector cleaning for new use
Immerse the injector, by keeping it in upright position, in an
ultrasonic bath. Immerse it up to below the high-pressure union.
If necessary, clean the injector body and the nozzle sealing
surface using a fine emery cloth to remove any residues left.
It is absolutely forbidden to remove the covers to clean the
injector. No manual and/or mechanical cleaning of the nozzle is
allowed.
- 46 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
WATER TEMPERATURE SENSOR
Water temperature sensor of the cooling circuit, fixed to the
thermostat case.
It is used by the ECU to manage the signal for the hightemperature indicator light and to control the electric fan of the
coolant radiator.
Indicator light switch-on temperature 106°C - 108°C.

Tighten the water temperature sensor to a torque of 20 Nm.
CHARACTERISTICS
Temp ° C
Rm in K Ω
Rm ax K Ω
-40
38.313
52.926
0
5.227
6.623
+140
0.067
0.076
OIL PRESSURE SENSOR
Assembled on the cylinder head at the end of the lubrication circuit.
It is a NC sensor, set to 0.3 bar ± 0.15.
It directly controls the indicator light on the vehicle instrument
panel by closing the circuit to ground when the oil pressure is
low.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 47 -
3
Engine electrical control
ACCELERATOR POTENTIOMETER INSIDE THE CABIN (PEDAL-INTEGRATED)
Limiting device stop screw
10.5° angular position with limiting device
18.2° angular position to limit stop
Pedal travel limiter block
2 return springs for idling position
Connector
Potentiometric sensor casing
KEY TO COMPONENTS
2. Pivot
3. Complete potentiometer
4. Big spring
5. Small spring
6. Pedal linking
7. Pedal travel limiting device
ACCELERATOR POTENTIOMETER AS AN ACCESSORY (REMOTE CONTROL WITH ACCELERATOR CABLE)
KEY TO COMPONENTS
1. Accelerator cable
2. Potentiometer control lever
3. Complete potentiometer casing
4. Potentiometer connector
- 48 -
5. Limit stop for idling position
6. Limit stop for maximum position
7. Pedal travel limiting device
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
GLOW PLUGS
They are assembled on the cylinder head and have direct
access to the combustion chamber.
Pre- and post-heating times are managed by the ECU according
to the coolant temperature, as shown in the following tables.
Pre-heating time:
°C
sec
-25
20
-20
20
-10
15
0
5
Distraction time:...............................
10
5
20
5
35 sec
Post-heating time:
°C
sec
-20
120
-10
120
0
120
15
90
30
60
40
30
Glow plug absorption curve
Rated voltage:............................ 11.0 V
Operating voltage:...................... min 7.0 V - max 13.5 V
Absorbed current: ...................... max 30 A
Tighten on cylinder head to 15 Nm.
Tighten the supply cable fastening nut at 1.5 Nm.
SPEED SENSOR
It is assembled externally on the crankcase.
It reads the signal provided by the phonic wheel (60 - 2 teeth)
integrated in the flywheel.
The air gap is 0.25 - 1.10 mm. It can be adjusted by means of
shims of 0.5 mm.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 49 -
3
Engine electrical control
ELECTRIC FAN
The electric fan activation is controlled by the control unit.
The electric fan current absorption cannot exceed 12 A.
If the electric fan and radiator are not supplied by Lombardini,
they must receive the approval of Lombardini's Application
Department.
STARTER MOTOR
Features:
type Bosch . ................... 12V
Power............................. kW 1.1
Rotation direction .......... clockwise
- 50 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Engine electrical control
3
ALTERNATOR
External, belt-driven by crankshaft.
Rotation ratio: 1:1.6.
Output current (A)
40A External alternator load curve graph
Alternator revolutions (rpm)
Measured after reaching thermal stabilization at 25°C and under constant voltage of 14 V.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 51 -
3
Note
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- 52 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Note
3
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 53 -
4
STORING THE ENGINE
HANDLING AND LIFTING
- Attach the engine to a suitable lifting device (lifting beam).
- Hook the lifting device in the engine lifting points, as shown in
the figure.
- Before lifting, make sure the weight is correctly balanced by
checking its barycentre.
Important
The bracket of the lifting points have been designed to lift
the engine only. They are not intended nor approved to lift
additional weights.
Do not use different methods to lift the engine than those
described herein. In case different methods are used, no
warranty shall be granted for any consequential damage.
- 54 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
4
Storing the engine
ENGINE STORAGE
- When the engines are not for more than 6 months, they have to be protected performing the operations described in
the following pages.
-
-
If the engine is not to be used for extensive periods, check the storage area conditions and the type of packaging and
make sure that these are suitable for correct storage.
If necessary, cover the engine with a proper protective sheet.
Avoid storing the engine in direct contact with the ground, in environments that are humid and exposed to bad weather,
near high voltage electric lines, etc.
Important
If, after the first 6 months, the engine is still not used, it is necessary to carry out a further measure to extend the protection period (see “Protective treatment”).
PROTECTIVE TREATMENT
1 - Pour in the engine housing AGIP RUSTIA C protective
oil up to the maximum level.
2 - Fill up with fuel containing 10% AGIP RUSTIA NT.
3 - Make sure that the coolant is up to the maximum level.
4 - Start the engine and keep it idle at minimum speed for
some minutes.
5 - Bring the engine to ¾ of the maximum speed for 5÷10
minutes.
6 - Turn off the engine.
7 - Empty out completely the fuel tank.
8 - Spray SAE 10W on the exhaust and intake manifolds.
9 - Seal the exhaust and intake ducts to prevent foreign
bodies from entering.
10 - Thoroughly clean all external parts of the engine using
suitable products.
11 - Treat non-painted parts with protective products (AGIP
RUSTIA NT).
12 - Loosen the alternator/fan belt.
13 - Cover the engine with a proper protective sheet.
Caution - Warning
In countries in which AGIP products are not available, find
an equivalent product (with specifications: MIL-L-21260C).
Important
Maximum every 24 months of inactivity, the engine must be
started up by repeating all “Engine Storage” operations.
PREPARING THE ENGINE FOR OPERATION AFTER PROTECTIVE TREATMENT
After the storage period and before starting up the engine and
mum level.
preparing it for operation, you need to perform certain opera- 14 - Replace the filters (air, oil, fuel) with original spare parts.
tions to ensure maximal efficiency conditions.
15 - Empty the cooling circuit completely and pour in the new
coolant up to the maximum level. 1 - Remove the protective sheet.
Caution - Warning
2 - Remove any sealing devices from the exhaust and intaOver time, a number of engine components and lubricants
ke ducts.
3 - Use a cloth soaked in degreasing product to remove the lose their properties, so it is important considering whether
they need replacing, also based on age (see Replacement
protective treatment from the external parts.
5 - Inject lubricating oil (no more than 2 cm3) into the intake table).
ducts.
6 - Adjust the alternator/fan belt tension.
7 - Turn the engine manually to check the correct movement
Important
and smoothness of the mechanical parts.
Maximum every 24 months of inactivity, the engine must be
8 - Refill the tank with fresh fuel.
started up by repeating all “Engine Storage” operations.
9 - Make sure that the oil and the coolant are up to the maximum level.
10 - Start the engine and after some minutes bring it to ¾ of
the maximum speed for 5-10 minutes.
11 - Turn off the engine.
12 - Remove the oil drain plug (see “Oil replacement”) and
discharge the AGIP RUSTIA NT protective oil while the
engine is hot.
13 - Pour new oil (see “Table of lubricants”) up to the maxi-
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 55 -
5
DISASSEMBLY
RECOMMENDATIONS FOR DISASSEMBLY
Important
Caution - Warning
To locate specific topics, the reader should refer to the When installing the LDW 442 CRS engines, always bear
index.
in mind that any variation to the functional systems may
involve serious failures to the engine.
– Before any intervention, the operator should lay out all Any improvement must be verified at Lombardini's testing
equipment and tools in such a way as to enable him to laboratories before application of the engine.
carry out operations correctly and safely.
In case the approval to a modification is not granted,
– Before proceeding with operations, make sure that Lombardini shall not be deemed responsible for any
appropriate safety conditions are in place, in order to consequential failures or damages to the engine.
safeguard the operator and any persons involved.
– In order to operate safely and easily, we recommend
positioning the engine on a rotating stand for engine
overhauling.
ENGINE WIRING HARNESS
Unscrew the 4 screws and remove the acoustic insulation panel.
1
Disconnect the coolant temperature sensor connector.
2
Release the safety lock A press on tab B and simultaneously
disconnect the connector from the electronic injector.
A
B
3
- 56 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Disassembly
5
Release the safety lock C press on tab D and simultaneously
disconnect the connector from the phase sensor.
C
D
4
Release the safety lock E press on tab F and simultaneously
disconnect the connector from the pressure regulator.
F
E
5
Release the safety lock G press on tab H and simultaneously
disconnect the connector from the pressure sensor.
H
G
6
Bring the speed sensor connector to an accessible position
and then disconnect the connector from the speed sensor by
pressing on lock spring I.
I
7
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 57 -
5
Disassembly
By pressing on lock spring L disconnect the alternator connector.
L
8
Disconnect the alternator control connector M from the service
wiring harness and then remove the engine wiring harness.
M
9
SERVICE WIRING HARNESS
Unscrew the fastening nuts and disconnect the supply cable of
glow plugs Cn1 and Cn2
Cn1 - Cn2
10
Disconnect the connector from the oil pressure sensor.
11
- 58 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Disassembly
5
Disconnect the connector on the starter motor.
12
Remove the service wiring harness.
13
EXHAUST MANIFOLD
1. Unscrew the four fastening nuts and remove the manifold.
2. Remove the gaskets.
3. Close the openings and ducts to prevent foreign bodies from
entering.
Important
Replace the self-locking nuts and the metal gaskets
between the manifold and the cylinder head every time they
are disassembled.
14
INTAKE SYSTEM AND DUCTS
1. Release the rubber clamp that fixes the air filter to the
support.
2. Use the special pliers to open the clamp of the air filter/inlet
manifold connection duct.
15
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 59 -
5
Disassembly
3. Disconnect the filter from the duct.
4. Use the special pliers to open the clamp and disconnect the
vent duct from the oil vapours decanting device.
16
17
5. Simultaneously remove the intake duct and the oil vapours
vent duct.
18
6. Remove the fastening screws and disassemble the air filter
support bracket.
19
INLET MANIFOLD
1. Unscrew the two fastening screws A of the heat protection B
and then remove it.
B
A
C
2. Unscrew the two fastening screws C and remove the
manifold.
3. Remove the gaskets.
4. Close the openings and ducts to prevent foreign bodies from
entering.
20
- 60 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
5
Disassembly
ALTERNATOR AND DRIVE BELT
1. Unscrew and remove the alternator fastening screw A and
nut B.
2. Manually push the alternator upwards to loosen the belt.
21
22
3. Release the belt from the pulleys and remove the alternator.
23
4. Unscrew the fastening screws and remove the alternator
support bracket.
24
FUEL SUPPLY HOSES - Disassembly
25
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 61 -
5
Disassembly
INJECTOR RETURN LINE
Push the split pin by its closed side against the return line fitting.
26
Keep the split pin in this position and disconnect the fittings from
the injectors by pulling them upwards. Pay attention to the Orings.
Caution - Warning
After removing the fittings, the split pin must automatically
return to the normal position.
If this does not happen, replace the split pin.
27
Important
Seal all the openings of the return line and injectors, to
keep dirt or foreign bodies out of the engine.
A
28
INJECTION PUMP SUPPLY HOSES
Press on the safety pawls B to disconnect the Diesel fuel
delivery line.
B
B
29
- 62 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Disassembly
5
Disconnect the injection pump return line.
30
Use the special plugs C to seal the fuel inlet and outlet holes.
C
31
OVERPRESSURE RETURN LINE
Disconnect the hose D from the Rail and use a special plug E to
plug the union.
D
E
32
FUEL DISTRIBUTOR
Unscrew the fastening screws and remove the distributor with
hoses and safety filter.
33
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 63 -
5
Disassembly
HIGH-PRESSURE LINE BETWEEN INJECTION PUMP AND
RAIL
F
Unscrew the high-pressure line union F on the Rail.
Caution - Warning
When unscrewing the high-pressure line union that
connects the pump to the rail, hold the union G on the highpressure pump with a wrench.
G
34
Important
After disassembling the high-pressure line, use the special
plugs to close the fuel passage holes on the high-pressure
pump H and on the Rail L.
L
H
35
1
0
ELECTRONIC INJECTORS
Important
Before removing the injectors and/or the delivery hoses,
mark them (0 and 1, see photo) not to reverse the original
position of the cylinders during the reassembly phase.
If the position of the electronic injectors is changed, the
ECU will not detect the expected IMA codes. This will result
in poor engine performances (see page 46).
36
HIGH-PRESSURE LINES OF THE INJECTORS
Caution - Warning
Unscrew the union of the high-pressure line M, by holding
the injector union N with a wrench, then unscrew union O.
M
N
Caution - Warning
Carry out the high-pressure line disassembly with care to
avoid damaging the cones and the sealing olives.
O
37
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Disassembly
5
Caution - Warning
Seal the Rail outlets, injector union and high-pressure line
inlets.
F
38
Extracting the electronic injectors from the cylinder head
1- Unscrew the screw 1 and remove the bracket 2 that fixes the
electronic injector to the cylinder head.
2- Manually rotate the electronic injector in its seat to extract it.
Make sure not to leave the copper gasket 3 in its seat on the
cylinder head.
1
2
39
3
Important Warning
The protrusion of the nozzles from the cylinder head
surface depends on the seal 3. Use seals of different
thickness to obtain a different protrusion.
Match each seal with the corresponding injector.
Never use improper tools to extract the electronic injector
from the cylinder head.
RAIL
Unscrew the two fixing columns of the acoustic insulation panel
that fix the rail to the cylinder head.
40
Disassemble the Rail and remove the columns that fix it to the
cylinder head.
41
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5
Disassembly
GLOW PLUGS
Use a box wrench to loosen the glow plugs, to avoid damaging
the hexagon.
42
Remove the glow plugs.
43
COOLANT OUTLET FLANGE AND THERMOSTATIC VALVE
1. Unscrew the three fastening screws and remove the coolant
outlet flange 1 (coolant flow from engine to radiator).
2. Remove the thermostatic valve 2
2
1
44
WATER TEMPERATURE SENSOR
Disassemble the sensor from its seat in the thermostat case and
check the condition of the O-ring.
OR
45
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Disassembly
5
OIL FILTER CARTRIDGE
Use the special tool to disassemble the cartridge.
46
STARTER MOTOR
Unscrew the fastening screws and remove the starter motor.
47
ALTERNATOR DRIVE PULLEY
1. Insert the special tool 1 p/n 1460.301 in the threaded hole on
the crankcase (flywheel side) to secure the crankshaft against
rotation.
1
1
48
2. Unscrew the four fastening screws to remove the pulley.
49
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5
Disassembly
ROCKER ARM COVER
Unscrew the fastening screws and remove the cover.
Caution - Warning
During the disassembly of the screws, pay attention not
to damage the acoustic insulating rubber seal between the
fastening screw and the cover.
50
TIMING SYSTEM
A
1. Unscrew the fastening screws and remove the external timing
belt guard A.
Key to components:
1- Camshaft toothed pulley
2- Water pump
3- Tightening pulley
4- Timing system drive pulley
51
1
2. Unscrew the fastening screw of the tightening pulley 3 and
manually rotate it to loosen the belt.
3. Remove the timing system drive belt B.
A
2
3
52
B
Important
Every time the belt is disassembled it must be replaced
even if it has not reached the prescribed time for replacement.
4
1
4. Fit the special tool 1 p/n 1460.300 to lock the camshaft timing
pulley.
5. Unscrew the fastening bolt.
Caution - Warning
When removing the pulley, pay attention not to drop the key
2.
2
6. Remove the timing pulley on the camshaft.
53
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5
Disassembly
7. Unscrew the fastening bolt of the timing system drive pulley
on the crankshaft.
8. Remove the timing system drive pulley on the crankshaft.
54
TIGHTENING PULLEY
Unscrew and disassemble the tightening pulley.
55
9. Unscrew the 3 fastening screws of the internal timing belt
guard.
10. Disassemble the internal timing belt guard.
56
WATER PUMP
Unscrew the fastening screws and remove the water pump.
Important
The water pump cannot be repaired. In case of failure it
must be replaced with a new one.
57
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5
Disassembly
FLYWHEEL
1- Insert the special tool 1 p/n 1460.301 in the threaded hole on
the crankcase to secure the crankshaft against rotation.
1
2- Unscrew the three fastening screws.
3- Remove the flywheel-locking tool 1 (1460.301).
1
58
3
Caution - Warning
During the disassembly phase, pay particular attention to
the cylindrical reference pin 2 between the flywheel and the
crankshaft.
4- Disassemble the flywheel paying attention not to damage the
teeth of the phonic wheel 3.
2
59
SPEED SENSOR
Unscrew the two fastening screws and remove the speed sensor.
Important
After disassembling the sensor, protect it against shocks,
humidity and any sources of high temperature.
60
STARTER MOTOR SUPPORT PLATE
Unscrew the three fastening screws to remove the plate.
61
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Disassembly
5
HIGH-PRESSURE PUMP
F
Unscrew the nut and remove the fixing bracket of the high-pressure pump.
Caution - Warning
Pull out the pump, paying attention not to drop the roller
tappet pad.
Important
The roller tappet pad B (fig.63) is available in different
thicknesses, since it determines the injection pump prestroke.
When replacing the injection pump, the pad thickness has
to be determined again.
To determine the correct thickness of pad B (fig.63) refer to
page 98.
62
High-pressure pump - Components
E
B
A
C
A Roller tappet
B Roller tappet pad
C High-pressure pump
D Seal
E Locating pin seat
F Locating peg
To disassemble the roller tappet refer to page 72.
D
63
CAMSHAFT COVER
Loosen the fastening screws shown by the arrows and disassemble the camshaft cover.
Important
In case of breakage or deformation of the camshaft cover,
replace the whole cylinder head.
64
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5
Disassembly
5
8
1
2
3
65
6
7
CAMSHAFT
Key to components:
1 Phase sensor reference plate
2 Phase sensor
3 High-pressure pump cam
4 High-pressure pump
5 Camshaft bearings
6 Intake cam
7 Exhaust cam
8 Seal ring
4
Remove the key and the oil seal ring.
66
Remove the camshaft, paying attention not to damage the
phase sensor reference plate.
Important
If the phase sensor reference plate 1 (fig.65) is bent or
incorrectly assembled, the engine may have starting
problems and/or irregular performances.
67
Unscrew the recessed hex-head screw A to disassemble the
roller tappet.
A
68
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Disassembly
5
ROCKER ARMS AND HYDRAULIC TAPPETS
Disassemble the rocker arm and the hydraulic tappet by pulling
the rocker arm upwards.
The hydraulic tappet comes off together with the rocker arm,
since it is fixed to it by means of a clamp 2.
In case the tappet does not come off with the rocker arm, extract
it from its seat using pliers.
69
Key to components:
1
2
3
1. Rocker arm
2. Tappet fastening clamp
3. Hydraulic tappet
 For further specifications on the hydraulic tappet, refer to
page 95.
70
CYLINDER HEAD
Important
Do not disassemble the head while the engine is hot, to
avoid the risk of deformations.
Unscrew the fastening bolts on the cylinder head following the
order shown in the photo.
71
Remove the cylinder head and place it in a suitable container to
wash it thoroughly.
Important
The cylinder head fastening bolts must be replaced at each
disassembly.
72
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5
Disassembly
CYLINDER HEAD GASKET
Remove the gasket.
Important
The head gasket must be replaced every time it is
disassembled.
73
GEAR COVER
Unscrew the fastening screws and disassemble the cover,
paying particular attention not to damage the oil seal ring 5 ,
shown in fig.75.
74
Key to components:
2
5
1. Balance shaft gear drive gear
2. Balance shaft gear
3. Oil pump
4. O-ring
5. Oil seal ring
Important
Check the integrity of the O-ring (4) and replace it if
necessary.
3
2
1
4
75
OIL PUMP GEAR
Unscrew the torx screw and pull the gear out.
76
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Disassembly
5
OIL PUMP
Unscrew the four fastening screws and remove the oil pump
plate.
The trochoid oil pump is driven by the balance shaft.
The pump casing is partly integrated in the engine block, and
partly in the crankcase.
77
OIL SUMP
Unscrew the fastening screws and remove the oil sump.
Components:
1
1 Oil suction pipe
2 Oil sump return line from vent system
3 Oil pressure regulating valve
2
3
78
CONNECTING ROD BIG END CAPS
1. Rotate the crankshaft to bring it to the bottom dead centre.
2. Unscrew the big end cap screws using a torx wrench.
79
3. Disassemble the connecting rod big end caps.
F
Important
The connecting rod half-bearings are made of special
material. Therefore, they must be replaced every time they
are removed to avoid seizures.
Important
During the reassembly phase, the two centring pins F
on the connecting rod cap must coincide with the special
holes F on the big end.
F
80
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5
Disassembly
PISTON
Press by hand on the connecting rod big end to pull out the
connecting rod - piston assembly.
81
Important
Mark some references on the connecting rods, caps,
pistons and gudgeon pins to avoid unintentionally mixing
up the components during the reassembly phase, since
this could result in engine malfunctioning.
82
CRANKCASE
Remove the screws shown by the arrows to separate the upper
and lower crankcase.
83
Remove the lower crankcase and place it in a suitable container
to wash it (see fig.87 a).
Caution - Warning
When disassembling the lower crankcase, pay attention not
to damage the crankshaft half-bearings and the components
of the oil pressure regulating valve A.
A
Important
The connecting rod half-bearings are made of special
material. Therefore, they must be replaced every time they
are removed to avoid seizures.
84
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5
Disassembly
BALANCE COUNTERSHAFTS
1. Remove the balance shaft together with the oil pump lobes.
85
2. Remove the second balance shaft with the gear.
86
CRANKSHAFT
Remove the crankshaft with the gear.
Important
The connecting rod half-bearings are made of special
material. Therefore, they must be replaced every time they
are removed to avoid seizures.
87
ENGINE BLOCK
Place the engine blocks in a container suitable for washing.
87 a
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5
Note
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6
OVERHAULS AND TUNING
RECOMMENDATIONS FOR OVERHAULS AND TUNING
– Information is given in a logical order in terms of timing and – Wash the components with special detergent and do not use
sequence of operations. The methods have been selected,
steam or hot water.
tested and approved by the manufacturer’s technical experts.
– Do not use flammable products (petrol, diesel, etc.) to degrease
or wash components. Use special products.
– This chapter describes procedures for checking, overhauling
and tuning assemblies and/or individual components.
– Dry all washed surfaces and components thoroughly with a jet
of air or special cloths before reassembling them.
Important
To locate specific topics, the reader should refer to the – Apply a layer of lubricant over all surfaces to protect them
index.
against oxidation.
– Before any intervention, the operator should lay out all equi- – Check all components for intactness, Wear limit, seizure, cracks
pment and tools in such a way as to enable him to carry out
and/or faults to be sure that the engine is in good working conoperations correctly and safely.
dition.
– The operator must comply with the specific measures de- – Some mechanical parts must be replaced en bloc, together with
scribed in order to avoid errors that might cause damage to
their coupled parts (e.g. valve guide/valve etc.) as specified in
the engine.
the spare parts catalogue.
– Before carrying out any operation, clean the assemblies
and/or components thoroughly and eliminate any deposits
or residual material.
Shaft seals
– Clean the shaft thoroughly and make sure that it is not – Do not use a hammer directly on the gaskets during assembly,
damaged or scored or become oval-shaped in the areas of
to avoid damaging them.
contact with the seals.
– Be careful not to damage the gaskets while joining them to the
– Lubricate the seal lips, and pointing them in the right direcshaft.
tion, place them in their seat using a special pad.
O- rings
– Avoid «rolling» the gasket during the attachment phase.
– Lubricate the seal before introducing it to its seat.
OVERHAULING THE CRANK GEARS AND CRANKCASE
Overhauling cylinders and pistons
Before deciding what kind of overhaul needs to be done, it
is important to carry out a dimensional check and verify
the correspondence of cylinders, pistons, sealing rings,
crankshaft and connecting rods.
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Overhauls and tuning
6
PISTON
E
C
1.
2.
Disassemble the lock ring B.
Pull out the gudgeon pin C to separate the piston D from the
connecting rod E.
Important
Keep each connecting rod coupled with its piston and gudgeon
pin.
B
D
88
3. Disassemble the seal rings F.
F
89
Clean the piston thoroughly.
Using a micrometer, measure the piston 12 mm from the skirt base.
Check the table to identify the class of the measured values.
The class letter is engraved on the piston crown.
If clearance between cylinder and piston is greater than 0.05 mm,
the piston and seal rings must be replaced.
90
Important
Before replacing the pistons, check that the weight difference
between the two integral preassembled connecting rod/
piston/gudgeon pin assemblies does not exceed 8 g, to
prevent weight imbalances.
Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
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6
Overhauls and tuning
Using a thickness feeler gauge, measure the clearance of each
seal ring in its seat.
If the clearance does not comply with the values shown in the table,
replace the seal rings and piston with original spare parts.
Seal rings/Piston clearance table
Seal rings
Clearance (mm)
1°
L1 = 0,070÷0,105
2°
L2 = 0,050÷0,085
3°
L3 =0,025÷0,070
91
Important
– Seal rings cannot be replaced separately.
– Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
CYLINDERS
Place the engine block on the workbench.
Using a dial gauge, measure the diameter at points 1-2-3 (see
figure).
Rotate the dial gauge 90° and re-measure.
Check the table to identify the class of the values measured.
The class letter is engraved on the engine block (see figure).
If ovalization or wear is greater than 0.05 mm, the cylinder must
be reconditioned.
92
Important
- The cylinders can be oversized by 0.25 and 0.50 mm, in
compliance with the Manufacturer's specifications.
- When reconditioning, make sure that the working angle is
45÷55° and that the average roughness is Ra=0.25÷0.5.
- Do not finish the internal surface of the cylinders using an
emery cloth.
- Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
Cylinders/Pistons dimension and class table
Dimensional
Class
Cylinder
Ø (mm)
B
68,00÷68,01
C
68,01÷68,02
Piston Ø (mm) Clearance
(mm)
67,96÷67,97
0,03÷0,05
67,97÷67,98
This table shows the reference values and their classification (only
valid for new engines).
Important
Pistons having a diameter as per their nominal value are
supplied as spare parts only for class (B). The oversized ones
(0.25 and 0.50 mm) have a reference (Ø 68.25 and Ø 68.50)
engraved on the upper section (crown) of the piston.
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Overhauls and tuning
6
RINGS
Place a seal ring in the cylinder and measure the ring end gap
using a thickness gauge (H).
Repeat for all the seal rings.
If the ring end gap does not correspond to the values indicated in
the table, replace the seal ring with an original spare part.
Seal ring dimensional table
93
Seal rings
Ring end gap
(mm)
Wear limit
(mm)
1°
0,25÷0,40
0,95
2°
0,30÷0,50
1,05
3°
0,25÷0,55
1,10
Install the seal rings on the piston in the order shown in the figure.
Important
Set the seal rings with their marking turned towards the piston
crown.
Important
Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
94
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6
Overhauls and tuning
CRANKSHAFT
Dimensional check and overhauling
Wash the crankshaft thoroughly using suitable detergent.
Introduce a pipe cleaner into the lubrication ducts to remove any
residual dirt.
Use a jet of compressed air to thoroughly clean the oil
passages.
Check the surfaces of the main journals and crankpins for Wear
limit to see whether grinding is necessary.
Using a micrometer, measure the diameter of the main journals
(A1) and crankpins (B1).
Couple the engine block with its crankshaft half-bearings and
tighten to the specified torque (see page 105). Using a dial
gauge, measure the internal diameter of the crankshaft and
connecting rod half-bearings (A1 and B2).
The gear on the crankshaft is timed by means of a key and
installed after heating at a stabilized temperature of 180°C for 5
minutes.
95
Connecting rod and crankshaft half-bearings - Diameters
Rif.
Dimensions
(mm)
Wear limit
(mm)
A1
47,984÷48,000
47,96
A2
48,019÷48,065
48,08
B1
38,984÷39,000
38,97
B2
39,027÷39,056
39,07
Clearance (mm)
Max clearance
(mm)
A2-A1 = 0,019÷0,081
0,12
B2-B1 = 0,027÷0,072
0,10
Important
Protect the contact surfaces with lubricating oil, to prevent them from rusting.
Important
– Half-bearings cannot be replaced separately.
– If it is necessary to grind the crankshaft, define the diameters of the main journal and crankpin to choose the available
coupling measures for the new crankshaft and connecting rod half-bearings (see table "Connecting rod and crankshaft
half-bearings - Diameters").
– When grinding the crankshaft it is possible to undersize the main journals and crankpins by 0.25 and 0.50 mm.
Caution - Warning
The crankshaft and connecting rod half-bearings are made out of special lead-free material, and hence must strictly be
replaced with new ones every time they are removed in order to prevent seizure.
Protect the contact surfaces with lubricating oil, to prevent them from rusting.
CRANKSHAFT - Axial clearance check
To measure the axial clearance of the crankshaft, it is necessary to
assemble the shaft in the crankcase complete with engine block.
See “Assembling the crankcase” on page 105 for the correct
procedure.
Using a dial gauge, measure the axial shift of the crankshaft.
Axial shift must be between 0.10÷0.22 mm.
96
- 84 -
Important
If the axial clearance between the crankshaft and the
crankcase is above 0.60 mm, it is necessary to replace the
whole engine block.
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Overhauls and tuning
6
BALANCE COUNTERSHAFTS - Pin housing diameters
Couple the two engine blocks and tighten to the specified torque
(see on page 105). Using a dial gauge, measure the pin housing
internal diameters (1 and 2), see "Table for determining countershaft
housing and pin clearance".
2
1
97
Check the pin surfaces for Wear limit and integrity.
3
Use a micrometer to measure the pin diameter (3 and 4).
Check in the following table the pin clearance.
If the resulting clearance does not comply with the specified
tolerances, replace the balance shaft or the engine blocks.
4
98
Table for determining countershaft housing and pin clearance
Balance shaft pin
Balance shaft housing
Clearance
Wear limit
Timing system side (1-3)
30,955÷30,940
31,000÷31,025
0.045÷0.085
0,100
Flywheel side (2-4)
27,955÷27,940
28,000÷28.021
0.045÷0.081
0,960
(N)
CONNECTING ROD - Dimensional check and overhauling
Check that the contact surfaces are perfectly clean and intact.
Caution - Warning
The crankshaft and connecting rod half-bearings are made
out of special lead-free material, and hence must strictly be
replaced with new ones every time they are removed in order
to prevent seizure.
Assemble the cap (N) on the big end together with the new halfbearings and then tighten the screws to a torque of 25 Nm.
Using a dial gauge, measure the diameters C - B.
100
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6
Overhauls and tuning
Connecting rod dimension table
Rif.
Dimensions (mm)
A
109,98÷110,02
B
20,025÷20,035
C
19,995÷20,000
D
39,027÷39,056
E
43,8÷44,0
Clearance
(mm)
Wear limit
(mm)
B-D
0,025÷0,04
0,07
101
Important
- Make sure that the connecting rod and crankshaft half-bearings are properly matched (see “Table of crankshaft and
connecting rod half-bearing dimensions”).
- The connecting rod half-bearings are supplied with undersized dimension, with respect to the nominal dimension of
0.25 mm e 0.50 mm.
- If the small end (B) diameter does not perfectly match with the one of the gudgeon pin (D), it is necessary to replace the
small end bearing to obtain the correct coupling (see "Connecting rod dimension table").
- Protect the contact surfaces with lubricating oil, to prevent them from rusting.
CONNECTING ROD
Check of axis parallelism
102
Insert the gudgeon pin in the connecting rod small end.
Use a dial gauge to check the axis parallelism of the connecting
rod big end and small end.
Parallel deviation, measured at the very tip of the gudgeon pin,
must not exceed 0.015÷0.030 mm.
If the measured values do not comply with the specified ones,
replace the connecting rod with an original spare part.
Before replacing the connecting rods, check that the weight
difference between the two integral preassembled connecting rod/
piston/gudgeon pin assemblies does not exceed 8 g, to prevent
weight imbalances.
Important
Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
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Overhauls and tuning
Important
Before carrying out the pre-assembly, check that the weight
difference between the two connecting rod/piston/gudgeon
pin assemblies does not exceed 8 g, to prevent weight
imbalances.
(C)
(A)
Lubricate the gudgeon pin (A) and the seat of the small end of
the connecting rod (B).
Install the lock ring (C) on the piston complete with seal rings
(D).
(B)
(D)
(C)
103
6
Important
Insert the lock rings with their tips turned towards the piston
base (15° tolerance).
(E)
Insert the gudgeon pin (A) in the piston (D) and assemble the
connecting rod (B) (complete with cap (E)).
Insert the gudgeon pin completely and fasten it with the second
lock ring (C).
Important
Check that the lock rings are correctly housed in their seats.
Lubricate the coupling surfaces and the ones that are prone
to oxidation.
Head gasket - Determining the thickness
After determining the value A and identifying the correct head
gasket, assemble it referring to the centring pins.
Important
The head gasket must be replaced every time it is
disassembled.
104
Head gasket selection and clearance volume table
A (mm)
Number of holes
0,280÷0,380
1
0,381÷0,480
2
0,481÷0,580
3
0,581÷0,680
4
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Clearance volume
(mm)
0,340÷0,440
0,340÷0,439
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6
Overhauls and tuning
VAPOUR RECIRCULATION VENT
Unscrew the four fastening screws of the cover and remove it.
105
Vapour recirculation vent - Operating principle
The vapours are discharged through the duct A and then reach
the first decanting chamber X.
The function of the metal filter element B is to slow down the
vapours in order to let them condense.
The drops of condensed oil, having a greater specific weight
than the vapours, flow back to the oil sump trough the same duct
A.
The vapours then pass from the decanting chamber X to
the chamber Y through a labyrinth that allows for further
condensation.
The vapours now condensed flow back to the sump through the
hole D. The vapour left will be conveyed trough the duct E to the
inlet manifold.
106
The reed valve C, that opens and closes according to the piston
alternate motion, allows for maintaining a constant vacuum
inside the engine block.
Check the seal of the valve C. If sealing is not perfect, replace
the whole vent cover.
Wash the filter element B or replace it if completely clogged.
Check that the oil recovery hole D is not clogged.
107
VAPOUR RECIRCULATION VENT
Important
When reassembling, always replace the gasket G.
Insert the metal filter element B in its housing and reinstall the
cover of the vapour recirculation vent.
B

Tighten the screws to a torque of 10 Nm.
G
108
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Overhauls and tuning
B
6
OIL PUMP
To overhaul and check the oil pump proceed as follows:
disassemble the plate A, disassemble the rotors, thoroughly
clean all the components and check for Wear limit of the working
surfaces (rotors and pump casing in the crankcase) by referring to
the relevant table for the values.
Install the rotors with the references B turned towards the installer.
A
109
110
Rotor seat diameter “B”
Rotor external diameter “A”
Seat - Rotor clearance “C”
Rotor height “D”
Rotor seat depth “E”
Side clearance between rotors and pump casing “F”
Radial clearance between rotors “G”
70,40÷70,43
69,95÷70,00
0,40÷0,48
6,98÷7,00
7,020÷7,045
0,020÷0,065
0,176
Using a thickness gauge, measure the clearance between the
rotor teeth.
If clearance is above the 0.250 mm limit for wear, replace the rotors
with original spare parts.
Check that the contact surfaces are perfectly clean, intact and not
deformed.
111
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6
Overhauls and tuning
OIL PRESSURE RELIEF VALVE
3
2
1
Key to components
1. Plug
2. Spring
3. Piston
112
The oil pressure relief valve is located in the lower crankcase.
Unscrew plug 4, pull out spring 5 and piston 6
4
5
6
113
Oil pressure
Oil pressure in
cylinder
head
Oil temperature
- 90 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Overhauls and tuning
6
CYLINDER HEAD AND COMPONENTS - Overhauling
Half collets (B)
Collar (A)
Spring (C)
Cup (D)
Gasket (E)
Valve disassembly
1 - Place the cylinder head on the workbench.
2 - Press hard on the valve collar (A) using the special tool.
3 - Disassemble the cotters (B) that secure the cup (A), the
spring (C), the cup (D) and the seal (E).
114
4 - Pull out the valves.
Important
When disassembling the valves, keep the components of the
different valves together to allow correct reassembly of the
valves.
115
VALVE SPRINGS
Use a gauge to measure the free length.
As shown in the figure, apply two different weights to the spring
and check with a dynamometer that the values comply with the
ones below.
Free length Z ........................................................= 45.7 mm
Length Z1
compressed by a force of 20.4 kg ..............= 27.2 mm
Length Z2
compressed by a force of 34.8 kg ..............= 34.8 mm
116
Flatness check
Place the cylinder head on a surface plate and position it with the
corners on the stud bolts.
Use a dial gauge to check the cylinder head levelness.
Important
If the level deviation is greater than 0.10 mm, the cylinder head
must be ground, removing no more than 0.20 mm.
117
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Overhauls and tuning
Valve seats - Check
Thoroughly clean the valves and their seats.
Measure the width of the seal (J) for each valve and the indentation
(W) from the cylinder head surface (see "Valve stem/Valve guide
dimension table").
If the dimensions measured do not match with the above-mentioned
values, replace using original spare parts.
Use a pointed tool to take out the valve seats.
Remove any debris, clean the valve seat housing carefully and
scrape the opening.
Lubricate the new valve seats and put them into the housing
manually.
Use the special tool to put the valve seats into the housing.
Slide the valves into their seats.
Measure the degree of indentation of each valve with respect to
the cylinder head surface (see "Valve stem/Valve guide dimension
table").
If the measured values do not comply with the specified ones, grind
each valve in its seat.
Important
Since the seats are prefinished, they are not to be worked
again after they have been driven in the head.
Important
Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
118
Valve guides - Overhauling and Check
Use a micrometer to measure the diameters of the valve stems
C and a dial gauge to measure the valve guide diameters B (see
"Valve stem/Valve guide dimension table").
If the diameters do not comply with the specified ones, replace the
valves and guides with original spare parts.
After being driven, the intake and exhaust valve guides must result
receding, with respect to the rocker arm support surface, by the
value shown in the "Valve stem/Valve guide dimension table".
119
Important
Carry out the measurements in different points to
detect any ovalization and/or concentrated wears.
Valve stem/Valve guide dimension table
- 92 -
Rif.
Dimensions
(mm)
ØB
6,005÷6,020
ØC
5,978÷5,990
A
57,3÷57,7
W
0,6÷0,9
J
1,3÷1,4
Clearance
(mm)
B-C
0,015÷0,06
Wear limit
(mm)
0,10
1,2
1,75
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
6
Overhauls and tuning
Valves guides and housings
The intake and exhaust guides are both made out of gray
iron with pearlitic phosphoric matrix and they have the same
dimensions:
Dimensions (mm):
D
E
10,045÷10,054
10,000÷10,018
Note: Since the guides are prefinished, they are not to be
worked again after they have been driven in the head.
120
VALVES - Reassembly
tool
717-1460-047
Important
- Check that the cylinder head has been perfectly washed
and dried.
- Check that all components are intact and, if necessary,
replace them with original spare parts.
(A)
(B)
1- Generously lubricate the valve stem seal ring (A) and then fully
insert it on the valve guide using the tool “717-1460-047”.
2 - Lubricate the valve stem (B).
3 - Slide the valve into its seat.
121
Half collets (F)
Cup (E)
Spring (D)
Collar (C)
4 - Assemble the cup (C), spring (D), collar (E) and cotters (F).
5 - Press hard on the collar (E) using the special tool to insert the
cotters (F) into the valve stem opening.
6 - Release the tool and check that the cotters are correctly
positioned.
If the cotters are not correctly positioned, repeat the operation.
7 - Repeat the same operation on the other valves.
122
Glow plug specifications and injector protrusion
Description
Value
Operating voltage
11 V
Voltage range
7÷13.5 V
Performance
Single pole
Current
Max 30A
123
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6
Overhauls and tuning
TIMING SYSTEM
Components:
1 Hydraulic tappet
2 Rocker arm
3 Rocker arm pin
4 Camshaft
5 Valve
6 Cylinder head
7 Lubrication line
124
Timing angle scheme
Important
For information purposes, the timing angle values are provided
below.
It must be pointed out that such values are not measurable on
the engine because of the presence of the hydraulic tappets.
They can be checked only when machining the camshaft.
Timing angle diagram:
α = 10° before S (top dead centre)
β = 42° after I (bottom dead centre)
γ = 58° before I (bottom dead centre)
δ = 10° after S (top dead centre)
125
83
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Overhauls and tuning
6
HYDRAULIC TAPPET
Components:
1 Tappet body
2 Low pressure piston
3 High pressure piston
4 Spring
5 Non-return valve
ALow-pressure chamber
BHigh-pressure chamber
126
The operating principle of the hydraulic tappet is based on the incompressibility of liquids and on controlled leakage.
The oil under pressure enters the tappet chamber A, providing a constant supply of oil in the low-pressure chamber.
The oil can only enter the high-pressure chamber B through the non-return valve 5 and leave via the clearance between the
piston 3 and the tappet body 1 (controlled leakage).
The chamber B is filled when the rocker arm is on the base radius of the cam, and the spring 4 keeps the piston 3 against the
valve stem, thus eliminating any system plays. Because of the spring extension, the tappet "extends", thus creating a small
depression in the chamber B. Such depression makes the non-return valve 5 open, thus allowing the oil in the chamber A to
pass to chamber B to restore the correct oil quantity necessary to eliminate any plays in the valves.
Difficult operating conditions:
For correct operation of the hydraulic tappets, the pressure chamber of piston 3 must always be filled with oil.
Under certain conditions this may not happen, since oil leakage, with engine stopped, can lead to complete emptying of the
tappets. This will result in valve plays entailing a characteristic sound, like a ticking, not to be confused with the normal ticking of
the injectors.
1 - With cold engine, the tappet filling time could be very long if the oil used is not suitable for the specific environmental
conditions (see prescribed oil on page 21).
2 - When the engine is hot, oil pressure may be low when running at idle, and small air bubbles could form up in the circuit.
Because of this, the lubricant becomes compressible, thus compressing the tappet and producing a valve play which is
responsible for the ticking sound.
However, the ticking sound should not last more than 5 minutes. If this is not the case, the problem is surely due to the
insufficient oil level, to Wear limit or to clogging of the ball valve and its seat in the piston preventing the tappet from operating
correctly. In this case, the only solution is to change the oil and replace the hydraulic tappets.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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6
Overhauls and tuning
CAMSHAFT
Before measuring the camshaft housings X on the cylinder head,
couple the camshaft bearing Z and the cylinder head and tighten
to a torque of 10 Nm, following the order shown in the figure.
Important
Failure to perform a proper tightening could result in
breakage or deformation of the camshaft bearing.
Important
The camshaft bearing is machined on the basis of the
cylinder head to which it is coupled. Therefore, it cannot be
supplied separately.
127
Use a dial gauge to measure the diameters of the housings (X)
and a micrometer to measure the diameters of the camshaft (Y)
(see "Table of camshaft dimensions").
Table of camshaft dimensions
Rif.
Dimensions
(mm)
Clearance
(mm)
Wear limit
(mm)
ØX
25,035÷25,060
ØY
24,979÷25,000
ØX - ØY=
0,035÷0,081
0,150
If the diameters do not comply with the specified values, replace
the camshaft or the cylinder head with an original spare part.
128
Important
In case of breakage or wear of the camshaft cover, replace
the whole cylinder head.
Use a micrometer to measure the maximum dimensions of the
involutes of the intake, exhaust and high-pressure pump cams
(see "Table of cam dimensions").
A Intake cam
B Exhaust cam
C High-pressure pump cam
If the dimensions of cam involutes are lower than the values shown
by 0.1 mm (maximum dimension), replace the camshaft with an
original spare part.
129
Table of cam dimensions
- 96 -
Rif.
Ø Dimensions (mm)
A
33,738÷33,763
B
33,542÷33,567
C
23,950÷24,000
C1
35,350÷35,400
Important
Protect the contact surfaces with lubricating oil, to prevent
them from rusting.
Assemble the camshaft on the cylinder head and check that the
axial clearance is 0.05÷0.20.
If the axial clearance does not comply with this value, replace the
cylinder head or the camshaft.
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Overhauls and tuning
6
PHASE SENSOR PLATE
The phase sensor plate must be assembled with its reference
correctly housed in its seat on the camshaft.
 Tighten the fastening screw to 10 Nm.
1
Important
If the phase sensor reference plate 1 is bent or incorrectly
assembled, the engine may have starting problems and/or
irregular performances.
130
HIGH-PRESSURE PUMP
Determining the thickness of the injection pump pad
 Refer to page 24 for the characteristics.
A
B
131
Position of the pump pre-stroke code number
Position of the plate on the high-pressure pump
Caution - Warning
The importance of determining the correct thickness of the
pad between the tappet and the injection pump is due to
the fact that such thickness represents the pre-stroke value
of the high-pressure pump. An incorrect pre-stroke value
will prevent reaching the correct fuel pressure and delivery
values in the Common Rail.
Key to components:
A
B
C
D
E
F
Pump seal
Cylinder head
Pad
Roller tappet
Camshaft
Distance value between pump level and pad
132
1. Position the cam moving the high-pressure pump on its base
radius, as shown in fig.132.
2. Use a depth gauge to measure the value f between the injection
pump level on the cylinder head and the pad.
133
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6
Overhauls and tuning
Measure the pad thickness and add it to the value F.
The result will be the value X as shown in the following table.
Check the pre-stroke code printed on the injection pump.
To determine the correct thickness, match the value X measured
with the injection pump code in the following table.
134
Table for determining the correct pad
X VALUE
(measured)
measured value
+
pad thickness
- 98 -
Injection pump
0
+1
+2
+3
Pad thickness selection
48,25
48,34
4,2
4,1
4,0
3,9
48,35
48,44
4,3
4,2
4,1
4,0
48.45
48.54
4,4
4,3
4,2
4,1
48.55
48,64
4,5
4,4
4,3
4,2
48,65
48,74
4,6
4,5
4,4
4,3
48,75
48,84
4,7
4,6
4,5
4,4
48,85
48,94
4,8
4,7
4,6
4,5
48,95
49,04
4,9
4,8
4,7
4,6
49,05
49,14
5,0
4,9
4,8
4,7
49,15
49,24
5,1
5,0
4,9
4,8
49,25
49,34
5,2
5,1
5,0
4,9
49,35
49,44
5,3
5,2
5,1
5,0
49,45
49,54
5,4
5,3
5,2
5,1
49,55
49,64
5,5
5,4
5,3
5,2
49,65
49,74
5,6
5,5
5,4
5,3
49,75
49,84
5,7
5,6
5,5
5,4
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Note
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6
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
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- 101 -
7
ASSEMBLY
RECOMMENDATIONS FOR REASSEMBLY
– The instructions are provided in a sequential way, following a practical and chronological order. The working methods have
been selected, tested and approved by the Manufacturer's technicians.
– This chapter describes all the installation procedures for assemblies and /or single components after overhauling, testing and,
if necessary, replacement using original spare parts.
Important
To locate specific topics, the reader should refer to the index.
- The operator must wash, clean and dry components and assemblies before installing them.
- The operator must make sure that the contact surfaces are intact, lubricate the coupling parts and protect those that are prone
to oxidation.
- Before any intervention, the operator should lay out all equipment and tools in such a way as to enable him to carry out operations
correctly and safely.
- In order to operate safely and easily, we recommend positioning the engine on a rotating stand for engine overhauling.
- Before proceeding with operations, make sure that appropriate safety conditions are in place, in order to safeguard the operator
and any persons involved.
- In order to fix assemblies and/or components correctly, the operator must tighten the fastening elements in a criss-cross or
alternating pattern.
- For assemblies and/or components having a prescribed tightening torque, first tighten to a lower torque, then carry out the final
torque to the prescribed value.
UPPER CRANKCASE
Crankshaft half-bearings
Thoroughly clean the main bearings and install the new halfbearings.
Caution - Warning
The crankshaft and connecting rod half-bearings are made
out of special lead-free material, and hence must strictly be
replaced with new ones every time they are removed in order
to prevent seizure.
139
Important
- The half-bearings cannot be replaced separately.
- If it is necessary to grind the crankshaft, define the diameters
of the main journal and crankpin to choose the available
coupling measures for the new crankshaft and connecting
rod half-bearings (see table "Connecting rod and crankshaft
half-bearings - Diameters").
- When grinding the crankshaft it is possible to undersize the
main journals and crankpins by 0.25 and 0.50 mm.
Once installed, generously lubricate the three half-bearings.
140
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
CRANKSHAFT
Lubricate the main journals, the half-bearings and assemble the
crankshaft.
The gear on the crankshaft is timed by means of a key and
installed after heating at a stabilized temperature of 180°C for 5
minutes.
141
BALANCE COUNTERSHAFTS
Lubricate the contact surfaces and assemble the first balance
countershaft.
The gear on the balance shaft is timed by means of a key and
installed after heating at a stabilized temperature of 180°C for 5
minutes.
Important
Carry out the timing of the balance countershaft gear and
crankshaft gear by aligning the two references on the gears.
142
Thoroughly clean and lubricate the bearings of the second balance
countershaft.
Assemble the second balance countershaft.
143
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- 103 -
7
Assembly
A
OIL PUMP - Lobes
The second countershaft controls the trochoid-type lobe oil pump.
Insert the inner lobe by making the key A of the shaft coincide with
the slot A of the lobe.
144
B
Important
The outer lobe must be installed with its reference B turned
towards the installer.
145
LOWER CRANKCASE
Lower crankcase half-bearings
Thoroughly clean the lower crankcase main bearings and install
the half-bearings.
Once installed, generously lubricate the three half-bearings.
Caution - Warning
The crankshaft and connecting rod half-bearings are made
out of special lead-free material, and hence must strictly be
replaced with new ones every time they are removed in order
to prevent seizure.
146
Important
The O-rings on the three centring bushes must be replaced
before coupling the lower and upper crankcases.
OR
147
- 104 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
Apply a thin layer of sealant (Loctite 5450) on the lower crankcase
sealing surface.
Caution - Warning
An excessive application of sealant may obstruct the
passages of the lubrication channels.
148
CRANKCASE - Fastening
When coupling the lower and upper crankcases, pay particular
attention not to damage the O-rings on the three centring bushes.
Important
Pay attention to the oil pressure relief valve: if previously
installed, during the lower crankcase assembly, it may
protrude from its seat.
149
Tighten the lower and upper crankcase fastening screws. Strictly
follow the order shown and keep to the prescribed torque values.
Bolt tightening torques:
1)Bolts M 10x1.5 :.......................... 50 Nm (1-2-3-4-5-6)
2)Bolts M 8 :.................................. 25 Nm (7-8-9-10)
3)Bolts M 6 :.................................. 10 Nm (11-12-13-14).
PHASE 1
Tighten all the bolts to a torque of 10 Nm, following the order
shown in the figure.
150
PHASE 2
Tighten all the bolts to a torque of 25 Nm, except for the M6 bolts
(11-12-13-14).
PHASE 3
Tighten the bolts (from 1 to 6) to a torque of 50 Nm.
Important
Non compliance with the assembly specifications may result
in crankshaft blocking.
151
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7
Assembly
OIL PUMP - Plate
Generously lubricate the lobes and the delivery and suction pockets
of the oil pump, then assemble the plate.
152
Tighten the plate screws in a criss-cross pattern.

Tighten the screws to a torque of 10 Nm.
153
Install the balance shaft gear, by making its reference 1 coincide
with the one of the crankshaft gear 2, and the key 3 of the balance
countershaft.
2
1
3
154
Caution - Warning
Insert the centring washer A before tightening the screw.
A

Tighten the screw to a torque of 60 Nm.
155
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
PISTON / CONNECTING ROD / GUDGEON PIN - Assembly
R
Check that the order of the references R, marked during the
disassembly phase, matches the cylinder where the assembly
(connecting rod, piston, gudgeon pin) is going to be installed, see
on page 76.
Generously lubricate the cylinder, rings and connecting rod
bearings.
156
Caution - Warning
The crankshaft and connecting rod half-bearings are made
out of special lead-free material, and hence must strictly be
replaced with new ones every time they are removed in order
to prevent seizure.
After disassembling the connecting rod cap, slide the pistons
in the cylinder paying attention to the correct positioning of the
combustion chamber.
Caution - Warning
In order not to damage the seal rings and the contact areas
while inserting the piston into the cylinder, use the special
piston ring compression tool.
157
The combustion chamber on the piston crown must be positioned
so as to have its decentralized part towards the water pump side.
158
CONNECTING ROD CAP
Generously lubricate the connecting rod caps and then
assemble them making the two centring pins B on the cap
coincide with the special holes A on the big end.
Caution - Warning
The crankshaft and connecting rod half-bearings are made
out of special lead-free material, and hence must strictly be
replaced with new ones every time they are removed in order
to prevent seizure.
159
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- 107 -
7
Assembly
Important
The screws of the connecting rod caps must be tightened in
an alternating pattern until reaching the prescribed torque
value.

Tighten the screws to a torque of 25 Nm.
160
OIL SUMP
Oil sump return line from vent system
Important
Always replace the O-ring (A) between the pipe and the
lower crankcase any time the pipe is disassembled.

Tighten the screw to a torque of 10 Nm.
A
161
OIL SUCTION PIPE
Important
Always replace the O-ring (A) between the pipe and the
lower crankcase any time the pipe is disassembled.

Tighten the screw to a torque of 10 Nm.
B
162
To seal the oil sump surface, apply a bead of silicone liquid sealant
on the lower crankcase surface (p/n 4776.100 spare part.).
The diameter of the sealant bead must be approx. 2.5 mm.
Caution - Warning
An excessive application of sealant may obstruct the
passages of the lubrication channels.
2,5 mm
163
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
Tighten the oil sump screws following the prescribed order, to avoid
the risk of deformation and oil leakages in the future.

Tighten the screws to a torque of 10 Nm.
164
STARTER MOTOR SUPPORT PLATE
Reassemble the starter motor support plate.

Tighten the screws to a torque of 25 Nm.
165
SPEED SENSOR
It reads the signal provided by the phonic wheel (60 - 2 teeth)
integrated in the flywheel.
The shim A allows modifying the air gap (0.25 ÷ 1.10) between the
sensor and the phonic wheel, by means of 0.5 mm shims.
A
166

Tighten the screws to a torque of 6 Nm.
167
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7
Assembly
FLYWHEEL
Assemble the flywheel on the crankshaft by making the cylindrical pin 2 coincide with the hole on the flywheel, then install the
fastening screws without tightening them.
Insert the special tool 1 p/n 1460.301 in the threaded hole on the
crankcase to secure the crankshaft against rotation.
1

168
Tighten the screws to a torque of 85 Nm.
2
1
SPEED SENSOR - Air gap
Use a thickness gauge to check that the air gap between the speed
sensor and the phonic wheel is correct (0.25÷1.10).
To set the correct air gap, add or remove 0.5 mm shims.
169
CLEARANCE VOLUME
Position the pistons at the top dead centre.
Measure the distance from the piston crown to the crankcase
surface in four diametrically opposite points.
Repeat the operation on all pistons.
The maximum measured value determines the value (A).
According to the measured value, choose the most suitable gasket.
This choice determines the value of the clearance volume (see
"Head gasket selection and clearance volume table").
Important
The head gasket must be replaced every time it is
disassembled.
170
Head gasket selection and clearance volume table
A (mm)
- 110 -
Number of holes
0,280÷0,380
1
0,381÷0,480
2
0,481÷0,580
3
0,581÷0,680
4
Clearance volume
(mm)
0,340÷0,440
0,340÷0,439
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
CYLINDER HEAD
Assemble the cylinder head by referring to the centring pins and
without applying a particular pressure.
171
Important
The cylinder head fastening bolts must be replaced at each
disassembly.
Tighten the cylinder head screws by strictly following the
tightening order specified below.
Phase 1:
Phase 2:
Phase 3:
172
Phase 4:
Phase 5:
Phase 6: Phase 7:
Phase 8:
Install the screws without tightening them.
Tighten the screws to 10 Nm following the
specified order.
Tighten the screws to 30 Nm following the
specified order.
Loosen the screws by 180°.
Tighten the screws to 30 Nm following the
specified order.
Tighten the screws to 50 Nm following the
specified order.
Tighten by rotating them by 90°, in the specified
order.
Tighten then tighten again by 90° following the
specified order.
ROCKER ARMS AND HYDRAULIC TAPPETS
Reassemble the rocker arm and the hydraulic tappet. Make sure
they are fully inserted.
173
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7
Assembly
CAMSHAFT
Important
Position the pistons at the top dead centre.
Generously lubricate the bearings and cams, then assemble the
shaft in the cylinder head.
 For the dimensional checks, refer to page 96.
174
CAMSHAFT COVER
Generously lubricate the bearings.
Assemble the upper camshaft bearing on the cylinder head, by
referring to the centring pins as shown by the arrows.
175
Important
Assemble the upper camshaft bearing with care, since the
hydraulic tappets may provoke a collision between valves
and pistons, if the latter are at their top dead centre.
Before fastening, bring the crankshaft to its BDC.
Do not apply immediately the prescribed torque. Tighten the
screws gradually and following the specified order.
This procedure will give time to the oil in the tappets to drain
away.
176
Important
In case of breakage or deformation of the camshaft cover,
replace the whole cylinder head.

Tighten the screws to a torque of 10 Nm.
Important
After correctly tightening all the screws, wait at least
30 minutes before starting the engine at an ambient
temperature of 20°C.
Before starting the engine, manually rotate the crankshaft to
check that the valves do not collide with the pistons.
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
SEAL RINGS
Camshaft:
Install the seal ring A after generously lubricating it. Set the external
surface of the ring coplanar with the surface of the centring hub.
If the seal ring is worn out, the new oil seal ring must be installed
by moving it towards the bottom of the support, so that the seal
lip is moved by 1 mm from its previous position (first replacement
of the seal ring).
At the second replacement of the seal ring, it must be installed by
pushing it fully to the bottom.
The clearance available to move the seal ring from its original
position to the bottom position is 2 mm.
177
Crankshaft (flywheel side):
Install the seal ring C after generously lubricating it. Set the external
surface of the ring aligned with the end of the chamfered opening.
Respect the 2 mm indentation value with respect to the crankcase
surface.
If the seal ring is worn out, the new oil seal ring must be installed
by moving it towards the bottom of the support, so that the seal
lip is moved by 1 mm from its previous position (first replacement
of the seal ring).
In case the seal ring is replaced again, it must be installed further
in by 1 mm with respect to the previous time (second replacement
of the seal ring).
178
WATER PUMP
Before reassembling the water pump, apply a layer of silicone
sealant 7091 on the crankcase surface ( matr. 4776.100).
Important
Never apply an excess of sealant near the rotor to avoid pump
overheating.
179
Tighten the screws in a criss-cross pattern.

Tighten the screws to a torque of 10 Nm.
180
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7
Assembly
Crankshaft seal rings (timing system side):
Install the seal ring B after generously lubricating it. Set the external
surface of the ring coplanar with the surface of the centring hub.
If the seal ring is worn out, the new oil seal ring must be installed
by moving it towards the bottom of the support, so that the seal
lip is moved by 1 mm from its previous position (first replacement
of the seal ring).
In case the seal ring is replaced again, it must be installed further
in by 1 mm with respect to the previous time (second replacement
of the seal ring).
Do not move back the seal ring by more than 3 mm, since no
mechanical limit stop is provided to ensure the correct operation
of the ring.
181
GEAR COVER
Caution - Warning
When assembling the cover, pay particular attention not to
damage the oil seal ring B (fig.181) on the crankshaft.
Use the special tool C p/n 1466.299 to centre the gear cover on
the crankshaft.
Tighten the screws of the gear cover, by following the specified
order, at a torque of 10 Nm.
C
182
Important
The slightest non compliance with the specified tightening
order may result in deformations of the oil seal ring B.
Internal timing belt guard
Assemble the internal timing belt guard and tighten the screws in
a criss-cross pattern.

Tighten the screws to a torque of 10 Nm.
183
TIGHTENING PULLEY
Assemble the tightening pulley without tightening the screws to
their final torque.
184
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
TOOTHED PULLEY ON CAMSHAFT
2
3
Important
Assemble the pulley on the camshaft by making the
reference key 2 coincide with its slot 3 in the pulley.
185
Fit the special tool p/n 1460.300 to lock the camshaft.
1

Tighten the screw to a torque of 80 Nm.
2
186
B
TIMING SYSTEM DRIVE PULLEY
Install the timing system drive pulley on the crankshaft by inserting
the key B of the gear in the slot B of the crankshaft.
187
Secure the crankshaft against rotation using the tool 1, see fig.168.

Tighten the screw to a torque of 85 Nm.
Remove the flywheel locking tool 1 (fig.168).
188
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7
Assembly
TIMING BELT SETTING
Important
Every time the belt is disassembled it must be replaced
even if it has not reached the prescribed time for replacement.
B
A
Install the belt by aligning the belt references A with the corresponding references on the timing system internal guard B and
with the references on the camshaft pulley C and crankshaft
gear D.
C
189
The timing system pulley on the crankshaft is correctly timed when
the engraving on the tooth is aligned with the mark on the timing
belt internal guard (in plastic) as shown at point B.
A
D
B
190
SYNCHRONOUS TIMING BELT ASSEMBLY
1
Important
Remove the belt from its protective wrapping only when
ready for fitting.
4
2
Install the belt respecting the rotation direction shown by the
arrow on the belt itself.
Make the toothed belt references coincide with the ones on the
pulleys of the camshaft 1 and crankshaft 3.
As last, insert the belt in the tightening pulley 4.
3
191
SYNCHRONOUS TIMING BELT - Tensioning
1
A
Insert the special tool 1 (p/n 1460.325) in the hexagonal hole of
the tightening pulley as shown in the figure.
By exerting a force on the tightening pulley, the tool makes it rotate
anticlockwise, thus correctly tensioning the timing belt.
Tighten the pulley fastening screw A to a torque of 25 Nm without
completely tightening it.
Remove the belt tensioning tool 1
192
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly

7
Tighten the screw to a torque of 25 Nm.
Manually rotate the crankshaft some times and repeat the
tensioning procedures.
193
EXTERNAL TIMING BELT GUARD
Reassemble the external timing belt guard.

Tighten the screws to a torque of 10 Nm.
194
ALTERNATOR DRIVE PULLEY
Install the pulley on the crankshaft and fasten it.

Tighten the screws to a torque of 10 Nm.
195
OIL FILTER
Lubricate the rubber seal with engine oil and screw the oil filter
back in.
Important
It is compulsory to screw the oil filter manually.
196
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- 117 -
7
Assembly
WATER TEMPERATURE SENSOR
Important
Always replace the O-ring.
Manually screw the temperature sensor on the cylinder head.

OR
Tighten the sensor to a torque of 20 Nm.
 For the technical specifications see page 47.
197
THERMOSTATIC VALVE
Important
The air bleeding hole F must be turned upwards.
F
198
COOLANT OUTLET FLANGE
Important
Always replace the O-ring.

Tighten the screws to a torque of 10 Nm.
OR
199
COOLANT INLET FLANGE
Reassemble the coolant inlet flange on the engine with the duct
fitting.
 Tighten the screws to a torque of 10 Nm.
200
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
7
Assembly
GLOW PLUGS
Important
The glow plugs must be tightened using a torque wrench
only.

Tighten the glow plugs to a torque of 15 Nm.
The glow plugs do not have a limit stop in the cylinder head.
Therefore, an incorrect tightening may result in serious head
damages (see on page 49) and could modify the glow plug
protrusion value in the combustion chamber.
201
ELECTRONIC INJECTORS
Important
Always replace the copper gasket 1 before reassembly.
The copper gasket 1 determines the nozzle protrusion from the
combustion chamber.
The effective dimensional check is to be carried out with the
cylinder head disassembled, by measuring the protrusion of the
nozzle tip from the cylinder head surface (see page 123).
1
202
ELECTRONIC INJECTOR FIXING BRACKET
Important
During the reassembly phase, always replace the screw 1
and the washer 2.
1
The washer has an assembly direction. The tapered surface A
must be in contact with the tapered surface of the bracket A.
2
203
Insert the injector with its seal.
Assemble the fixing bracket 2.
Partially screw the fastening screw 3 without tightening it, paying
attention to the assembly direction of the tapered washer.
Repeat the same operation on the second injector.
0
1
3
2
Important
Reassemble the injector and/or delivery hoses paying
attention to the references on the injector and fuel delivery
hoses (0 and 1, see photo) marked during disassembly.
If the position of the electronic injectors is changed, the
ECU will not detect the expected IMA codes. This will result
in poor engine performances.
204
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7
Assembly
HIGH-PRESSURE PUMP
C
Position the cam C that controls the high-pressure pump on its
base radius.
205
Loosen the screw A and introduce the tappet in the cylinder head,
with the slot B aligned with the screw A.
When the tappet roller comes in contact with the cam, tighten the
screw A.
To check if the tappet has been correctly assembled, it must not
rotate and allow a limited downstroke.
206
Apply a layer of grease (which acts as a sealant in this case) on
the high-pressure pump collar.
Insert the pad with its concave section turned towards the cam.
To determine the pad thickness, see page 98.
207
Important
During the reassembly phase, the pin 1 must be inserted in
the positioning slot 2.
Install the high-pressure pump in the cylinder head.
Important
To avoid damaging the injection system, remove the
protection plugs only a moment before connecting to the
fittings.
208
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
Assemble the bracket that fixes the pump to the cylinder head.
Important
Insert the spherical washer respecting the assembly
direction and tighten the fastening nut to a torque of 25 Nm.
209
COMMON RAIL
Insert the two fixing columns on the stud bolts.
210
Important
Assemble the Common Rail and screw in the fixing
columns without tightening them.
Important
To avoid damaging the injection system, remove the
protection plugs only a moment before connecting to the
fittings.
211
HIGH-PRESSURE LINES
Important
Assemble the high-pressure lines by manually screwing the
fittings, without tightening them.
Important
To avoid damaging the injection system, remove the
protection plugs only a moment before connecting to the
fittings.
212
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7
Assembly
ELECTRONIC INJECTORS - Tightening

Tighten the screw to a torque of 22 Nm.
213
COMMON RAIL FIXING COLUMNS - Tightening

Tighten the columns to a torque of 25 Nm.
214
INJECTOR FITTINGS - Tightening
Tighten the injectors fittings in sequence.

Tighten the fittings to a torque of 19 Nm.
215
INJECTION HOSE FITTINGS ON RAIL AND INJECTION PUMP
HOSE - Tightening

Tighten the fittings to a torque of 19 Nm.
216
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
FUEL HOSES
Assemble the fuel distributor.

Tighten the screws to a torque of 19 Nm.
217
ROCKER ARM COVER
Important
Before reassembling the rocker arm cover, always replace
the silicone seal between the cylinder head and the cover.
Tighten the screws in a progressive way, starting from the
central screws and then proceeding with the external ones.

Tighten the bolts to a torque of 22 Nm.
218
RAIL
Remove the plug D and fit the hose E on the Rail discharge fitting.
D
E
Important
To avoid damaging the injection system, remove the
protection plugs only a moment before connecting to the
fittings.
219
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- 123 -
7
Assembly
Remove the protection plugs C from the inlet/outlet fittings of the
high-pressure pump.
C
220
Connect the high-pressure pump return hose by exerting a small
pressure on the quick-coupling and check that it is correctly fitted.
221
Connect the supply hose by exerting a small pressure on the quickcoupling and check that it is correctly fitted.
222
A
Remove the protection plugs A from the injector return fittings.
223
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Assembly
7
INJECTOR RETURN LINE
Manually fit the injector return hose on the fitting by pressing
from above and pushing vertically until hearing the lock click.
Stop pushing as soon as you have reached the limit stop.
224
Use a plastic hose clamp to secure the return hose to the other
supply hoses, to avoid interferences with the acoustic insulation
cover.
225
Position the safety filter as shown in the figure.
Caution - Warning
Do not position the filter in a different position to avoid
problems to the supply system.
226
STARTER MOTOR
Insert the starter motor in the supporting plate.

Tighten the bolts to a torque of 45 Nm.
227
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- 125 -
7
Assembly
ALTERNATOR
Fix the alternator support bracket to the crankcase.

Tighten the screws to a torque of 25 Nm.
228
Introduce the spacer B on the stud bolt that supports the alternator
in the lower part, and then fix the alternator to the upper bracket..
229
ALTERNATOR DRIVE BELT
Fit the alternator drive belt on the two pulleys.
230
Tension the belt by pressing on the alternator.


Tighten the bracket screw to a torque of 45 Nm.
Tighten the screw in the lower part to a torque of 25 Nm.
231
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Assembly
7
After manually performing some complete rotations of the
crankshaft, use a special tool (Krikit-type) to check the belt tension.
When applying a force of 100 Nm on the belt section shown in the
figure, the arrow should be 10-15 mm.
Using the special tool (Krikit-type) approved by Lombardini, the
correct tension value should be 20÷25 kg.
Should the tensioning be incorrect, repeat the operation.
232
INLET MANIFOLD
Important
Before reassembling the manifold, always replace the
gaskets between cylinder head and manifold.
Reassemble the manifold and the heat protection.

Tighten the screws to a torque of 25 Nm.
233
AIR FILTER SUPPORT BRACKET
Assemble the air filter support.

Tighten the screws to a torque of 25 Nm.
234
AIR FILTER DUCT - VENT DUCT
Reassemble the intake duct together with the oil vapours vent
duct.
Important
Always replace the clamps when reassembling.
235
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- 127 -
7
Assembly
AIR FILTER
Fasten the rubber clamp that fixes the air filter to the support.
236
EXHAUST MANIFOLD
Important
Before reassembling the manifold, always replace the
copper self-locking nuts and the metal gaskets between the
manifold and the cylinder head.
Reassemble the exhaust manifold and install the four nuts.

Tighten the nuts to a torque of 25 Nm.
237
SERVICE WIRING HARNESS - INSTALLATION
1. Install the accessory wiring harness (see page 38-39 for the
wiring diagram).
238
2. Connect the black connector (MOT) to the 50 of the starter
motor.
MOT
239
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Assembly
7
3. Connect the connector (ALT) to the alternator.
ALT
240
4. Connect the glow plug supply cables cn 1 and cn 2 to the
mating glow plugs.
cn1 - 2
241
5. Connect the oil pressure connector H to the oil pressure
sensor.
H
6. Connector V must be connected to the mating connector on
the engine wiring harness.
7. Connector G must be connected to the gearbox speed sensor.
242
ENGINE WIRING HARNESS - INSTALLATION
1. Install the accessory wiring harness (see page 40-41 for the
wiring diagram).
243
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7
Assembly
1. Connect the connectors O and N to the mating electronic
injectors.
A
Important
Respect the original position: the engine will not work if the
connectors are changed.
O
2. Lock the connectors by fully engaging the yellow securing
lever A.
N
244
3. Connect the connector R to the Rail pressure sensor.
4. Lock the connector by fully engaging the yellow securing lever
G.
R
G
245
5. Connect the connector T to the Rail pressure regulator.
6. Lock the connector by fully engaging the yellow securing lever
E.
T
E
246
7. Connect the connector P to the coolant temperature sensor.
8. Fully push downwards the connector until the lock spring is
correctly engaged.
P
247
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Assembly
7
9. Connect the phase connector Q to the phase sensor located
under the cylinder head, flywheel side.
10. Lock the connectors by fully engaging the yellow securing
lever C.
C
Q
248
11. Connect the connector L to the mating cable of the speed
sensor.
L
12. Make sure the lock spring I is correctly engaged.
I
249
13. Connect the alternator control connector.
250
Reassemble the acoustic insulation cover.
251
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7
Rimontaggio
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
8
TORQUE SPECIFICATIONS AND USE OF SEALANT
TIGHTENING TORQUE TABLES
The tables show the tightening torques for standard screws
and the main components.
Tightening torques are provided again, along with method and
sequence, in the instructions for assembling components and/
or assemblies
Table of tightening torques for standard screws (coarse thread)
Resistance class (R)
Quality/
Dimensions
Diameter
M3
M4
M5
M6
M8
M10
M12
M14
M16
M18
M20
M22
M24
M27
M30
4.6
4.8
R>400N/mm2
Nm
Nm
0,7
0,5
1,5
1,1
3
2,3
5
3,8
13
9,4
25
18
43
32
68
51
105
79
145
109
205
154
275
206
355
266
525
394
725
544
5.6
5.8
R>500N/mm2
Nm
Nm
0,6
0,9
1,4
1,8
2,8
3,8
4,7
6,3
12
16
23
31
40
54
63
84
98
131
135
181
193
256
260
344
333
444
500
656
680
906
6.8
8.8
10.9
12.9
R>600N/mm2 R>800N/mm2 R>1000N/mm2 R>1200N/mm2
Nm
Nm
Nm
Nm
1
1,4
1,9
2,3
2,2
2,9
4,1
4,9
4,5
6
8,5
10
7,5
10
14
17
19
25
35
41
37
49
69
83
65
86
120
145
101
135
190
230
158
210
295
355
218
290
405
485
308
410
580
690
413
550
780
930
533
710
1000
1200
788
1050
1500
1800
1088
1450
2000
2400
Table of tightening torques for standard screws (fine thread)
Resistance class (R)
Quality/
Dimensions
Diameter
M 8x1
M 10x1
M 10x1,25
M 12x1,25
M 12x1,5
M 14x1,5
M 16x1,5
M 18x1,5
M 18x2
M 20x1,5
M 20x2
M 22x1,5
M 24x2
M 27x2
M 30x2
4.6
Nm
10
21
20
36
38
56
84
122
117
173
164
229
293
431
600
4.8
R>400N/mm2
Nm
14
28
26
48
45
75
113
163
157
230
218
305
390
575
800
5.6
5.8
R>500N/mm2
Nm
Nm
13
17
26
24
45
42
70
105
153
147
213
204
287
367
533
750
35
33
59
56
94
141
203
196
288
273
381
488
719
1000
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
6.8
8.8
10.9
12.9
R>600N/mm2 R>800N/mm2 R>1000N/mm2 R>1200N/mm2
Nm
Nm
Nm
Nm
20
27
38
45
42
39
71
68
113
169
244
235
345
327
458
585
863
1200
56
52
95
90
150
225
325
313
460
436
610
780
1150
1600
79
73
135
125
210
315
460
440
640
615
860
1100
1600
2250
95
88
160
150
250
380
550
530
770
740
1050
1300
1950
2700
- 133 -
8
Torque specifications and use of sealant
Table with tightening torques of the main components and use of sealant
Description
Alternator (lower fastening nut)
Alternator (upper fastening screw)
Lower crankcase, sealing surface
Speed sensor wiring harness
Glow plugs
Connecting rod cap
Engine block
Engine block
Engine block
Starter motor/Alternator connecting cable
Glow plug connection nut
Cable on starter motor
Inlet manifold
Exhaust manifold
Rocker arm cover
Acoustic insulation cover
Gear cover
Decanting device cover
Cover for glow plug connection cable
Oil sump
Fuel distributor
Oil filter
Coolant inlet flange
Timing belt tightening pulley
Injector fixing bracket
Phase sensor indicator on camshaft
Starter motor on support plate
Starter motor support plate
Coolant pump
High-pressure pump fixing bracket
Oil pump
Pressure switch
Exhaust manifold stud bolt
Rail fixing stud bolt
Injection pump stud bolt
Inlet manifold protection
External timing belt guard
Internal timing belt guard
Alternator drive pulley on crankshaft
Timing system drive pulley on crankshaft
Camshaft timing pulley
Injection pump tappet
Oil filter union
Rail fixing
Fuel inlet union on injector body
Phase sensor
Speed sensor
Water temperature sensor
Engine anchoring bracket
- 134 -
Diam. x pitch (mm)
Torque (Nm)
M 10x1,5
M8
45
25
Sealant
Loctite 5450
M8
M 10x1
M 7x1
M 10x1,5
M8
M6
M6
M4
M8
M8
M8
M8
M8
M6
M6
M4
M6
M6
M20x1,5
M6
M8
M8
M6
M10x1,25
M8
M6
M8
M6
M12x1,5
M8
M8
M8
M8
M6
M6
M6
M12x1,25
M10x1,25
M6
M20x1,5
M8
M6
M5
M12x1,5
M10
20
15
25
50
25
10
6
1,5
10
25
25
22
12
10
10
4
10
10
hand tight
10
25
22
10
45
25
10
25
10
25
8
8
8
25
10
10
10
85
80
6
15
25
27
10
6
20
50
Loctite 5205
Loctite 5205
Loctite 5205
Loctite 242
Loctite 242
Loctite 270
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
8
Torque specifications and use of sealant
Description
Air filter bracket
Alternator support upper bracket
Camshaft bearing
Camshaft cover support
Oil sump plug
Water thermostat
Cylinder head
High-pressure lines from rail to injectors
High-pressure lines from pump to rail
Oil suction pipe
Oil return line
Pressure relief valve
Left balance shaft gear fastening screw
Flywheel
Diam. x pitch (mm)
Torque (Nm)
M8
M8
M6
M6
M18
M6
M10
M14x1
M12x1,5
M6
M6
M12x1,5
M10x1,25
M10x1,25
25
25
10
10
35
10
50Nm+90°+90°
19
28
10
10
15
60
85
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Sealant
Loctite 5205
- 135 -
9
SPECIFIC TOOLS
Description
- 136 -
Part number
Camshaft seal ring protection sleeve
1460.319
Protection sleeve for assembling the gear cover oil seal ring
1460.296
Instrument for checking the protrusion of pistons, injectors
and glow plugs
1460.298
Gear cover centring tool
1460.299
Camshaft locking tool
1460.323
Flywheel locking tool
1460.301
Timing belt tensioning tool
1460.325
Tool for intake and exhaust valve guide seal assembly
1460.047
Diagnostic tool
1460.322
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Note
9
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Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
- 137 -
10
DIAGNOSIS
New diagnosis
Diagnosis
Service
Configuration
New diagnosis
Recent diagnosis
Start OBD
Demo
Select the type of application: Automotive or Marine
Automotive
Marine
Select the type of application: Petrol or Diesel fuel
Automotive
Petrol
Automotive
Diesel
Automotive
Diesel
Lombardini
Automotive
Diesel
LOMBARDINI
ENGINE ELECTRONICS
LDW 442 CRS
-6JF L3
08-
Automotive
Diesel
LOMBARDINI
ENGINE ELECTRONICS
Switch on the control panel
ENTER to continue
Parameters
Statuses
Information
Errors
Delete errors
Activations
- 138 -
Now we are inside the diagnostic system.
See "Diagnosis Menu"
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
10
Diagnosis
Diagnostic Menu - Diagnosis
Parameters. It allows displaying all the engine functional parameters. 8 parameters are displayed for each page. To modify the
set of parameters to be displayed, select them using the selection arrows. To access the additional information of the selected
parameters, press the diamond key.
Parameters
Statuses
Information
Errors
Delete errors
Activations
Engine rpm
Vehicle speed
Accelerator position
Coolant temp.
Target rail press.
Meas. rail press.
Programm. no.
Runaway no.
1517
35
15.3
65.5
565
568
1
0
Water temp.
30°C
It shows the coolant
temperature
Statuses It allows displaying the status of the actuators and relays
Parameters
Statuses
Information
Errors
Delete errors
Activations
Gear lever st.
Brake contact
Engine status Main relay st.
Cooling fan st.
Pre inj. status
Pilot inj. status
Engaged
Released
Stopped
On/OFF
On/OFF
Pres
Pres
Both in the parameter and the
status menu, use the arrow keys
to scroll the list of the displayed
items.
Information It provides information concerning the programming of the ECU and the codes of the injector delivery class stored
in the ECU
Parameters
Statuses
Information
Errors
Delete errors
Activations
Hw Version
Sw Version
Iso Code
Lombardini design
Class of Injector 1
Class of Injector 2
Class of Injector 1
AAH7AFAAA
It shows the class of the
injector 1
Errors It lists the errors present and/or stored in the ECU, provides the description of the error and of its cause and suggests
the checks to be carried out.
Parameters
Statuses
Information
Errors
Delete errors
Activations
P0190
P0165
STD
STD
P0190
STD
Rail pressure sensor
Delete errors It allows deleting all the errors stored in the ECU
Parameters
Statuses
Information
Errors
Delete errors
Activations
Delete errors
Activations
--Please wait
---
Parameters
Statuses
Information
Errors
Delete errors
Activations
Activations It allows storing the injector delivery class codes in the ECU
Parameters
Statuses
Information
Errors
Delete errors
Activations
Cyl. 1 injector code
Cyl. 2 injector code
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Cyl. 1 injector code
0-----------WARNING
-------Enter the value
Press ENTER
- 139 -
10
Diagnosis
Database menu – Recent diagnosis
Automotive
Diesel
Lombardini
ENGINE ELECTRONICS
Switch on the control panel
Automotive
Diesel
ENGINE ELECTRONICS
New diagnosis
Recent diagnosis
Start OBD
1
ENTER to continue
Parameters
Statuses
Information
Errors
Delete errors
Activations
Database menu – Start OBD
It allows accessing the diagnosis, if the ECU is recognized
New diagnosis
Recent diagnosis
Start OBD
Searching for
EOBD control units installed
Please wait
Parameters
Statuses
Information
Errors
Delete errors
Activations
If the ECU is not recognized or in case of problems, the following message will be displayed
No control unit was
recognized. Check the
connections and press
ENTER to search again or
EXIT to quit.
- 140 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
Diagnosis
10
Service Menu
Database
Service
Configuration
System info
Updating
Product info
File management
Area dealer
Language IT
Printer : ----Disp. mode
Contrast
Logger
Acquisition
Buzzer
Cust. Acc.
: IT
System info
Updating
Product info
File management
Area dealer
Connect Polar to PC, access
the SERVICE system
System info
Updating
Product info
File management
Area dealer
Vers. HW
Vers. FW
Vers. BL
Vers. DB
System info
Updating
Product info
File management
Area dealer
System properties
Road Test Transf.
Logger Transf.
: Off
: 13
: Off
: Off
: On
: On
:1.01
:1.01
:1.01
:1.01
Free space
Total space
System info
Updating
Product info
File management
Area dealer
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
134843
163940
Lombardini
Kohler
Cav.Lav.Lombardini 2
42100
RE
Italia
05223891
- 141 -
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- 142 -
Workshop Manual_LDW 442 CRS _ cod. 1.5302.838 - 1° ed_ rev. 00
LDW 442 CRS
AUTOMOTIVE
cod. 1-5302-838
La Lombardini si riserva il diritto di modificare in qualunque momento i dati contenuti in questa pubblicazione.
Lombardini se rèserve le droit de modifier, à n'importe quel moment, les données reportées dans cette publication.
Data reported in this issue can be modified at any time by Lombardini.
Lombardini behält sich alle Rechte vor, diese Angabe jederzeit zu verändern.
La Lombardini se reserva el derecho de modificar sin previo aviso los datos de esta publicación.
42100 Reggio Emilia – Italia - ITALY
Via Cav. del Lavoro Adelmo Lombardini, 2 - Cas. Post. 1074
Tel. (+39) 0522 3891 - Telex 530003 Motlom I – Telegr.: Lombarmotor
R.E.A. 227083 - Reg. Impr. RE 10875
Cod. fiscale e Partita IVA 01829970357 - CEE Code IT 01829970357
E-MAIL: atlo@lombardini.it
Internet: http://www.lombardini.it
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