MTU C23R Instructions d'exploitation

Operating InstructionsDiesel engine12 V 4000 C13, C13R, C13L12 V 4000 C23, C23R16 V 4000 C13, C13R, C13L16 V 4000 C23, C23RM015695/03E

1.5 Crankshaft transportation lock – For transport with flange-mounted generatorSpecial tools, Material, Spare partsDesignation / Use Part No. Qty.Tor

Installing injector1. Remove plug before installing the injec-tor. (Do not remove the plug from the HPline before installing the adapter.)2. Coat inje

9. Coat screw head mating face (2) andthread with engine oil.10. Fit hold-down clamp (1) in the correct position and use torque wrench to tighten scre

18. Mount double-walled HP line (5) and use torque wrench to tighten to the specified torque. Tighteningsequence:1 Adapter (4)2 Rail (6)Name Size Type

7.8 Fuel System7.8.1 Fuel system – VentingPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation / Use

7.9 Fuel Filter7.9.1 Fuel filter – ReplacementPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation /

7.9.2 Draining fuel prefilterPreconditions☑Engine shut down and secured against being restarted.Special tools, Material, Spare partsDesignation / Use

7.9.3 Fuel prefilter – DrainingPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation / Use Part No. Qt

7.10 Charge-Air Cooling7.10.1 Intercooler – Checking condensate drain for coolant discharge and obstructionsDANGERUnguarded rotating and moving engine

7.11 Air Intake7.11.1 Service indicator – Signal ring position checkPreconditions☑Engine is stopped and starting disabled.Checking signal ring positio

7.12 Starting Equipment7.12.1 Starter – Condition checkPreconditions☑Engine is stopped and starting disabled.Checking starter condition1. Check securi

3. Turn crankshaft to bring cylinder A1 to TDCposition.4. Check the threads on both sides of the fly-wheel (1) for ease of movement.5. Fit retainer (2

7.13 Lube Oil System, Lube Oil Circuit7.13.1 Checking engine oil levelChecking oil level before start-ing engine1. Withdraw oil dipstick from guide tu

7.13.2 Checking engine oil levelPreconditions☑Engine shut down and secured against being restarted.Checking engine oil level at oilsight glass1. The o

7.13.3 Engine oil – ChangePreconditions☑Engine shut down and starting disabled.☑Engine is at operating temperature.☑MTU Fluids and Lubricants Specific

5. Tighten drain screws (2) and (3) with torque wrench to the specified torque.Name Size Type Lubricant Value/StandardScrew M26 x 1.5 Tightening torqu

7.13.4 Engine oil – Sample extraction and analysisPreconditions☑MTU Fluids and Lubricants Specifications (A001061/..) are available.Special tools, Mat

7.14 Oil Filtration / Cooling7.14.1 Automatic oil filter – Oil filter candles replacementPreconditions☑Engine is stopped and starting disabled.Special

3. Pull out oil filter element (1).4. Remove O-ring.5. Remove screw (2).6. Pull out plastic spinner (1) with spring.7. Remove nut (3).8. Take off spri

Installing oil filter candles1. Install in reverse order of removal.2. Additionally, the following instructions are to be observed:• Replace all seals

7.14.2 Oil indicator filter – Cleaning and checkPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation

Checking strainerItem Findings ActionStrainer Metallic residues •Clean•Monitor engine operation•Check strainer daily•Contact Service.Strainer Damaged

1.6 Safety regulations for startup and operationSafety regulations for startupInstall the product correctly and carry out acceptance in accordance the

7.14.3 Centrifugal oil filter – Cleaning and filter-sleeve replacementPreconditions☑Engine is stopped and starting disabled.Special tools, Material, S

Centrifugal oil filter – Cleaningand filter-sleeve replacement1. Remove clamp (14).2. Release cover screw (2) and take off cov-er (1).3. Carefully lif

7.15 Coolant Circuit, General, High-Temperature Circuit7.15.1 Engine coolant – Level checkPreconditions☑Engine is stopped and starting disabled.☑MTU F

7.15.2 Engine coolant – ChangeSpecial tools, Material, Spare partsDesignation / Use Part No. Qty.CoolantEngine coolant – Change1. Drain engine coolant

7.15.3 Draining engine coolantPreconditions☑Engine shut down and secured against being restarted.WARNINGCoolant is hot and under pressure.Risk of inju

5. Open the drainage point on the main PTOend of the crankcase, on the left or rightside (arrowed) and drain off the enginecoolant.6. Close off all op

7.15.4 Engine coolant – FillingPreconditions☑Engine is stopped and starting disabled.☑MTU Fluids and Lubricants Specifications (A001061/..) are availa

Filling with coolant using apump1. Connect a suitable pump with a hose todrain valve at main PTO end (arrowed).2. Open vent points on distributor, oil

Alternatively: Filling with cool-ant through filler neck1. Open vent points on distributor, oil heat ex-changer and exhaust turbochargers (ar-rows).2.

7.15.5 Engine coolant pump – Checking pressure relief portDANGERUnguarded rotating and moving engine components.Risk of serious injury – danger to lif

1.7 Safety regulations for maintenance and repair workSafety regulations prior to maintenance and repair workHave maintenance or repair work carried o

7.15.6 Engine coolant filter – ReplacementPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation / Use

7.15.7 Engine coolant – Sample extraction and analysisPreconditions☑MTU Fluids and Lubricants Specifications (A001061/..) are available.Special tools,

7.16 Low-Temperature Circuit7.16.1 Charge-air coolant – Level checkPreconditions☑Engine is stopped and starting disabled.☑MTU Fluids and Lubricants Sp

7.16.2 Charge-air coolant – ChangeSpecial tools, Material, Spare partsDesignation / Use Part No. Qty.CoolantCharge-air coolant – Change1. Drain charge

7.16.3 Draining charge-air coolantPreconditions☑Engine shut down and secured against being restarted.Special tools, Material, Spare partsDesignation /

7.16.4 Charge-air coolant – FillingPreconditions☑Engine shut down and starting disabled.☑MTU Fluids and Lubricants Specifications (A001061/..) are ava

Filling with charge-air coolantusing pump1. Connect appropriate pump with hose to adrain valve (arrow) or at the lowest pointbetween engine and cooler

Alternatively: Filling with cool-ant through filler neck1. Open vent point on charge-air cooler (ar-row).2. Top up engine coolant via filler neck onco

7.16.5 Charge-air coolant pump – Checking pressure relief portDANGERUnguarded rotating and moving engine components.Risk of serious injury – danger to

7.17 Belt Drive7.17.1 Drive belt – Condition checkPreconditions☑Engine is stopped and starting disabled.☑Guard is removed.Drive belt – Condition check

Ensure particular cleanness during maintenance and repair work on the product. After completion ofmaintenance and repair work, make sure that no loose

7.18 Battery-Charging Generator7.18.1 Alternator – Removing and refittingPreconditions☑Engine shut down and secured against being restarted.Special to

8. Unscrew bolts (arrowed).9. Remove alternator (1).10. Clean alternator (1) thoroughly(→ Page 142).11. Refit alternator (1) in reverse order of re-mo

7.18.2 Battery-charging generator – CheckPreconditions☑Engine shut down and starting disabled.WARNINGCompressed airRisk of injury!• Do not direct comp

7.18.3 Battery-charging generator drive – Drive belt tension adjustmentPreconditions☑Engine is stopped and starting disabled.Special tools, Material,

7.18.4 Battery-charging generator – Drive belt and belt tensioner replacementPreconditions☑Engine is stopped and starting disabled.Special tools, Mate

4. Install protective cover.5. Readjust belt tension after 30 minutes and again after 8 hours engine runtime (→ Page 143).M015695/03E 2013-03 | Task D

7.19 Fan Drive7.19.1 Fan drive – Drive belt tension check / adjustmentPreconditions☑Engine is stopped and starting disabled.Special tools, Material, S

Checking V-belt tension – Rock-ford S370 fan clutch1. Switch on belt tension tester.2. Hold measuring tip of belt tension testerover belt drive. Tap d

7.19.2 Fan drive – Drive belt replacementPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation / Use P

7.20 Wiring (General) for Engine/Gearbox/Unit7.20.1 Engine wiring – CheckPreconditions☑Engine is stopped and starting disabled.Special tools, Material

Working on electrical and electronic assembliesAlways obtain the permission of the person in charge before commencing maintenance and repair workor sw

7.21 Accessories for (Electronic) Engine Governor / Control System7.21.1 Engine governor and connectors – CleaningPreconditions☑Engine is stopped and

7.21.2 Engine governor plug connections – CheckPreconditions☑Engine is stopped and starting disabled.Note: Always use test plugs to check the connecti

8 Appendix A8.1 AbbreviationsAbbre-viationMeaning ExplanationAC Alternating CurrentAdBlue - Brand name given by the German automotive indus-try associ

Abbre-viationMeaning ExplanationIIE Initial Injector Equalization Input of the injector code with DiaSys® in enginegovernor to ensure optimum emission

8.2 MTU contact persons/service partnersOur worldwide sales network with its subsidiaries, sales offices, representatives and customer servicecenters

9 Appendix B9.1 Special ToolsAdapterPart No.: F6558528Qty.:Used in:1 7.1.1 Cranking engine manually (→ Page 78)Barring devicePart No.: F6555766Qty.:Us

Cranking toolPart No.: F6555766Qty.:Used in:1 7.1.1 Cranking engine manually (→ Page 78)Cranking toolPart No.: F6783293Qty.:Used in:1 7.1.1 Cranking e

Filter wrenchPart No.: F30379104Qty.:Used in:1 7.9.1 Fuel filter – Replacement (→ Page 104)Qty.:Used in:1 7.15.6 Engine coolant filter – Replacement(→

Optibell 2 belt tension testerPart No.: Y4345711Qty.:Used in:1 7.19.1 Fan drive – Drive belt tension check / adjust-ment (→ Page 146)RatchetPart No.:

Ratchet with extensionPart No.: F30006212Qty.:Used in:1 7.1.1 Cranking engine manually (→ Page 78)Qty.:Used in:1 7.2.1 Cylinder liner – Endoscopic exa

1.8 Fire prevention and environmental protection, fluids andlubricants, auxiliary materialsFire preventionRectify any fuel or oil leaks immediately. O

Torque wrench, 20-100NmPart No.: F30026582Qty.:Used in:1 7.18.4 Battery-charging generator – Drive belt and belttensioner replacement (→ Page 144)Torq

Torque wrench, 60-320 NmPart No.: F30452768Qty.:Used in:1 1.4 Crankshaft transport locking device (→ Page 8)Qty.:Used in:1 7.5.2 Valve clearance – Che

9.2 IndexNumerics12/16 V 4000 C13/13R/13L engine data: Applicationgroup 5A, optimized exhaust emissions (EPA Stage 2) 3212/16 V 4000 C13/13R/13L engin

FFan drive – Drive belt replacement  148– Drive belt tension check / adjustment  146Fault messages of the engine governor ADEC (ECU 7) forseries 4000

Lead• Adopt suitable measures to avoid the formation of lead dust.• Switch on extraction system.• When working with lead or lead-containing compounds,

1.9 Standards for safety notices in the textDANGERIn the event of immediate danger.Consequences: Death, serious or permanent injury.• Remedial actionW

2 General Information2.1 Engine side and cylinder designationsEngine sides are always designated as viewed from the driving end (KS).The cylinders of

Printed in Germany© 2013 Copyright MTU Friedrichshafen GmbHThis Publication is protected by copyright and may not be used in any way whether in whole

2.2 Engine layoutIllustration is valid for 16V 4000 Cxyz engines1 Crankcase breather2 Air intake3 Exhaust turbocharger4 Exhaust outlet5 Air intake6 Ex

2.3 Sensors and actuators – OverviewIllustration also applies to 16V 4000 Cx3 engines1 B07 (lube oil temperature)2 Sensors for cylinder ex-haust tempe

1 B50 (crankcase pressure)2 B05.3 (lube oil pressurebefore filter)3 B05 (lube oil pressure af-ter filter)4 B33 (fuel temperature incommon rail)5 B01 (

1 Injectors Y39.11 toY39.16 (B-bank)2 Sensors for cylinder ex-haust temperature B4.11through B4.18 (B-bank)(optional only for 16 V)3 B44 (turbocharger

1 B13 (crankshaft speed)24 | General Information | M015695/03E 2013-03TIM-ID: 0000012925 - 002

3 Technical Data3.1 12/16 V 4000 C13/13R/13L engine data: Application group5A, optimized fuel consumptionExplanation:DL Ref. value: Continuous powerBL

GENERAL CONDITIONS (for maximum power)Number of cylin-ders12V 12V 12V 16V 16V 16VIntake depression(new filter)A mbar 30 30 30 30 30 30Intake depres-si

COMBUSTION AIR / EXHAUST GASNumber of cylin-ders12V 12V 12V 16V 16V 16VCharge-air pres-sure before cylin-derR bar abs 2.2 2.4 2.5 2.3 2.52.62.72.8Exha

Number of cylin-ders12V 12V 12V 16V 16V 16VCoolant antifreezecontent, max.L % 50 50 50 50 50 50Charge-air tem-perature after in-tercooler, max.L °C 80

FUEL SYSTEMNumber of cylin-ders12V 12V 12V 16V 16V 16VFuel pressure atengine inlet con-nection, min.(when engine isstarting)L bar -0.1 -0.1 -0.1 -0.1

Table of Contents1 Safety1.1 Important provisions for all products 51.2 Personnel and organizational requirements 61.3 Transport 71.4 Crankshaft trans

CAPACITIESNumber of cylin-ders12V 12V 12V 16V 16V 16VEngine coolant,engine side (with-out cooling equip-ment)R Liters 212 212 212 260 260 260Charge-ai

Number of cylin-ders12V 12V 12V 16V 16V 16VEngine surfacenoise with attenu-ated intake noise(filter), BL, (free-field sound-pres-sure level Lp, 1mdist

3.2 12/16 V 4000 C13/13R/13L engine data: Application group5A, optimized exhaust emissions (EPA Stage 2)Explanation:DL Ref. value: Continuous powerBL

Number of cylin-ders12V 12V 12V 16V 16V 16VExhaust overpres-sure, max.L mbar 85 85 85 85 85 85Fuel temperatureat engine inletconnectionR °C 25 25 25 2

COMBUSTION AIR / EXHAUST GASNumber of cylin-ders12V 12V 12V 16V 16V 16VCharge-air pres-sure before cylin-derR bar abs 2.4 2.6 2.8 2.6 2.9 3.03.1Exhaus

Number of cylin-ders12V 12V 12V 16V 16V 16VCoolant antifreezecontent, max.L % 50 50 50 50 50 50Charge-air tem-perature after in-tercooler, max.L °C 80

FUEL SYSTEMNumber of cylin-ders12V 12V 12V 16V 16V 16VFuel pressure atengine inlet con-nection, min.(when engine isstarting)L bar -0.1 -0.1 -0.1 -0.1

CAPACITIESNumber of cylin-ders12V 12V 12V 16V 16V 16VEngine coolant,engine side (with-out cooling equip-ment)R Liters 212 212 212 260 260 260Charge-ai

Number of cylin-ders12V 12V 12V 16V 16V 16VEngine surfacenoise with attenu-ated intake noise(filter), BL, (free-field sound-pres-sure level Lp, 1mdist

3.3 12/16 V 4000 C23/23R engine data: Application group 5B,optimized fuel consumptionExplanation:DL Ref. value: Continuous powerBL Ref. value: Fuel st

7.12.1 Starter – Condition check 1097.13 Lube Oil System, Lube Oil Circuit 1107.13.1 Checking engine oil level 1107.13.2 Checking engine oil level 111

MODEL-RELATED DATA (basic design)Number of cylinders 12V 12V 16V 16VNumber of cylinders 12 12 16 16Cylinder arrangement: V angle degrees 90 90 90 90Bo

LUBE OIL SYSTEMNumber of cylinders 12V 12V 16V 16VLube oil operating temperature before en-gine, fromR °C 92 92 92 92Lube oil operating temperature be

Number of cylinders 12V 12V 16V 16VOil pan capacity at dipstick mark “min.”(standard oil system) (option: max. operat-ing inclinations)L Liters 150 15

3.4 12/16 V 4000 C23/23R engine data: Application group 5B,optimized exhaust emissions (EPA Stage 2)Explanation:DL Ref. value: Continuous powerBL Ref.

MODEL-RELATED DATA (basic design)Number of cylinders 12V 12V 16V 16VNumber of cylinders 12 12 16 16Cylinder arrangement: V angle degrees 90 90 90 90Bo

LUBE OIL SYSTEMNumber of cylinders 12V 12V 16V 16VLube oil operating temperature before en-gine, fromR °C 92 92 92 92Lube oil operating temperature be

CAPACITIESNumber of cylinders 12V 12V 16V 16VEngine coolant, engine side (without cool-ing equipment)R Liters 212 212 260 260Charge-air coolant, engin

3.5 Firing orderFiring orderNum-ber ofcylin-dersFiring order8V A1-B4-A4-A2-B3-A3-B2-B112V A1-B5-A5-B3-A3-B6-A6-B2-A2-B4-A4-B116 V A1-A7-B4-B6-A4-B8-A2

3.6 Main engine dimensionsMain engine dimensionsLength (A) 12V approx. 2810 mmLength (A) 16V approx. 3280 mmWidth (B) 12V, 16V approx. 1585 mmHeight (

4 Operation4.1 Preparations for recommissioning the engine after extendedout-of-service periods (>3 months)Preconditions☑Engine shut down and secur

1 Safety1.1 Important provisions for all productsNameplateThe product is identified by nameplate, model designation or serial number and must match wi

4.2 Putting the engine into operation after scheduled out-of-service-periodPreconditions☑Engine is stopped and starting disabled.StartupItem ActionLub

4.3 Starting the engine in manual modePreconditions☑Engine is not under load.☑External start interlock is not activated.DANGERUnguarded rotating and m

4.4 Stopping the engine in manual modePreconditions☑Engine is not under load.☑Engine is running in manual mode.CAUTIONStopping the engine when it is r

4.5 After shutting down the enginePreconditions☑MTU Corrosion-proofing and Reproofing Regulations (A001070/..) are available.After shutting down the e

4.6 Plant cleaningPreconditions☑Engine is stopped and starting disabled.☑Operating voltage is not present.Special tools, Material, Spare partsDesignat

5 Maintenance5.1 Maintenance task reference table [QL1]The maintenance tasks and intervals for this product are defined in the Maintenance Schedule. T

6 Troubleshooting6.1 TroubleshootingEngine does not turn over when starter is operatedComponent Cause ActionBattery Discharged or defective Charge or

Engine speed not steadyComponent Cause ActionFuel injection system Injector defective Replace (→ Page 97).Speed sensor Defective Notify Service.Fuel s

Component Cause ActionDrain water from fuel prefilter.Intercooler Leaking Notify Service.58 | Troubleshooting | M015695/03E 2013-03TIM-ID: 0000002541

6.2 Fault messages of the engine governor ADEC (ECU 7) forseries 4000 C&I enginesThe fault code numbers are generated by the Engine Control Unit a

1.2 Personnel and organizational requirementsOrganizational measures of the operatorThis manual must be issued to all personnel involved in operation,

Fault code No. Full designation Meaning ActionRelatedparameterNo.016 SS P-Lube OilOil pressure too low(2nd limit value), automaticengine shutdown.1. C

Fault code No. Full designation Meaning ActionRelatedparameterNo.036 HI ETC2 OverspeedAlarm configuration limit val-ue 1; preliminary warning:Speed of

Fault code No. Full designation Meaning ActionRelatedparameterNo.Flush fuel prefil-ter.Replace fuelprefilter filter ele-ment.Replace fuel filter(→ Pag

Fault code No. Full designation Meaning ActionRelatedparameterNo.092 SS No Starter SpeedAlarm configuration limit val-ue; Starter speed was not at-tai

Fault code No. Full designation Meaning ActionRelatedparameterNo.139 L1 TE BUFFER TESTSupply voltage of tempera-ture sensors faulty.Contact Serv-ice.C

Fault code No. Full designation Meaning ActionRelatedparameterNo.183 AL CAN No PU-DataAlarm configuration; The se-lected CAN mode initializescommunica

Fault code No. Full designation Meaning ActionRelatedparameterNo.202 SD T-FuelSensor B33 defective (fueltemperature).1. Check cabling.2. Replace if ne

Fault code No. Full designation Meaning ActionRelatedparameterNo.221 SD Diff Lube OilSensor F25 faulty (lube oildifferential pressure).1. Check sensor

Fault code No. Full designation Meaning ActionRelatedparameterNo.245 SD ECU Supply VoltageSensor fault (ECU operatingvoltage). Replace ECU. 2.80065892

Fault code No. Full designation Meaning ActionRelatedparameterNo.315 - - -1.8004.514316 - - -1.8004.515317 - - -1.8004.516318 - - -1.8004.517319 - - -

1.3 TransportTransportAlways use the lifting eyes on the engine and generator/gearbox when transporting gensets.Always use the lifting eyes on the eng

Fault code No. Full designation Meaning ActionRelatedparameterNo.337 - - -1.8004.536338 - - -1.8004.537339 - - -1.8004.538340 - - -1.8004.539341OPEN_L

Fault code No. Full designation Meaning ActionRelatedparameterNo.359 - - -1.8004.558360 - - -1.8004.559361AL Injector Power StageLowAlarm configuratio

Fault code No. Full designation Meaning ActionRelatedparameterNo.382 AL Wiring TOP 2Alarm configuration; Shortcircuit or wire break on tran-sistor out

Fault code No. Full designation Meaning ActionRelatedparameterNo.402AL Open Load Digital In-put 3Alarm configuration; Line dis-ruption on digital inpu

Fault code No. Full designation Meaning ActionRelatedparameterNo.415 LO P-Coolant IntercoolerAlarm configuration limit val-ue 1; Preliminary warning:C

Fault code No. Full designation Meaning ActionRelatedparameterNo.449 SS P-Charge AirAlarm configuration limit val-ue 2; Main warning: Charge-air press

Fault code No. Full designation Meaning ActionRelatedparameterNo.465 SD P-AUX 2SD alarm configuration; Ana-log input signal for Aux 2pressure faulty;

Fault code No. Full designation Meaning ActionRelatedparameterNo.476 AL Crash Rec. Init. ErrorAlarm configuration; Initiali-zation error of crash reco

7 Task Description7.1 Engine7.1.1 Cranking engine manuallyPreconditions☑Engine shut down and secured against being restarted.Special tools, Material,

Cranking engine manually (toolmounted underneath)1. Remove grounding device or guard plate.2. Engage cranking tool (2) in ring gear (1)and mount on fl

1.4 Crankshaft transport locking deviceSpecial tools, Material, Spare partsDesignation / Use Part No. Qty.Torque wrench, 10-60 NmF30452769 1Torque wre

7.1.2 Engine – Barring with starting systemDANGERUnguarded rotating and moving engine components.Risk of serious injury – danger to life!• Before barr

7.2 Cylinder Liner7.2.1 Cylinder liner – Endoscopic examinationPreconditions☑Engine is stopped and starting disabledSpecial tools, Material, Spare par

1. Compile endoscopy report using the table.2. Use technical terms for description of the liner surface (→ Page 83).3. Depending on findings:• Do not

7.2.2 Instructions and comments on endoscopic and visual examination of cylinderlinersTerms used for endoscopic examinationUse the terms listed below

Findings MeasureLiners with heat discoloration starting in the TDC-ring 1 have to be replaced.Seizures, Seizure marks Seizure marks are of irregular c

7.3 Crankcase Breather7.3.1 Crankcase breather – Oil separator element replacement, diaphragm check andreplacementPreconditions☑Engine is stopped and

Checking diaphragm1. Remove cover (4).2. Remove spring (5), gasket (2) and dia-phragm (3).3. Check diaphragm (3) for damage, fit newdiaphragm if used

7.4 Running Gear7.4.1 Grounding device – Carbon brush checkPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsD

Cleaning running surface on adapter1. Clean running surface of carbon brushes on adapter with cold cleaner.2. Remove stubborn deposits with soft brush

7.4.2 Grounding device – Carbon brush replacementPreconditions☑Engine shut down and starting disabled.Special tools, Material, Spare partsDesignation

2. Screw locknut (2) onto screw (1) up to the end of the thread.3. The long end of holder (3) must face downwards. Push holder (3) through the plate o

7.5 Valve Drive7.5.1 Valve gear – LubricationPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation / U

7.5.2 Valve clearance – Check and adjustmentPreconditions☑Engine shut down and starting disabled.☑Engine coolant temperature is max. 40 °C.☑Valves are

4. Rotate crankshaft with barring device in di-rection of engine rotation until the "OT-A1"marking and pointer are aligned.Diagram for 8V en

Diagram for 16V engines (twocrankshaft positions)Diagram for 20V engines (twocrankshaft positions)Checking valve clearance at two crankshaft positions

Adjusting valve clearance1. Release locknut (1).2. Insert feeler gauge (3) between valvebridge and rocker arm.3. Use Allen key to set adjusting screw

7.5.3 Cylinder head cover – Removal and installationPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignat

7.6 Injection Pump / HP Pump7.6.1 HP pump – Filling with engine oilPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spar

7.7 Injection Valve / Injector7.7.1 Injector – ReplacementSpecial tools, Material, Spare partsDesignation / Use Part No. Qty.Injector(→ Spare Parts Ca

7.7.2 Injector – Removal and installationPreconditions☑Engine is stopped and starting disabled.Special tools, Material, Spare partsDesignation / Use P

2. Remove HP fuel line (4).3. Remove return line (5).Note: The injector accumulator will be emptiedwhen removing the adapter.4. Remove adapter (3).5.