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During the engine warranty period in particu-
lar, have the prescribed maintenance service
carried out as follows:

R

regularly

R

punctually

R

at a qualified specialist workshop which
has the necessary specialist knowledge
and tools to carry out the work required.
Mercedes-Benz recommends that you use
a Mercedes-Benz or MTU Service Centre
for this purpose. In particular, work rele-
vant to safety or on safety-related systems
must be carried out at a qualified specialist
workshop.

If there are legal requirements on exhaust gas
aftertreatment, please note that:

R

maintenance on the engines must be car-
ried out according to specific regulations
and using special measuring devices.

R

it is prohibited to modify or tamper with
components relevant to emissions.

All Mercedes-Benz and MTU Service Centres
are aware of the relevant regulations.
Maintenance work does not include repair
work. Repair work requires a separate order.
You may also consult a Mercedes-Benz or
MTU Service Centre for further information.

Qualified specialist workshop

A qualified specialist workshop has the nec-
essary specialist knowledge, tools and quali-
fications to carry out the work required on the
engine to a professional standard. This is
especially important for work relevant to
safety.
A qualified specialist workshop must carry
out the required service, maintenance and
repair work and document it according to the
specifications of Daimler AG. Failure to com-
ply with these specifications could lead to the
loss of warranty entitlements.
Mercedes-Benz recommends that you use a
Mercedes-Benz or MTU Service Centre.

Always have the following work on the vehicle
carried out at a qualified specialist workshop:

R

work relevant to safety

R

service and maintenance work

R

repair work

R

modifications such as installations or con-
versions

R

work on electronic components

Please have warranty and ex gratia work car-
ried out at authorised workshops/Service
Centres.

R

For on-highway applications, contact a
Mercedes-Benz Service Centre.

R

For off-highway applications, contact an
MTU or MTU-authorised Mercedes-Benz
partner.

General information

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Содержание OM 904-926 LA BlueTec

Страница 1: ...OM 904 926 LA BlueTec OM 904 926 LA Operating Instructions...

Страница 2: ...Symbols Warning Environmental note Possible vehicle damage i Tip X Instructions YY Continuation symbol Y page Page reference...

Страница 3: ...es to the following Rdesign Requipment Rtechnical features You cannot therefore base any claims on the data illustrations or descriptions in this man ual The manual instructions are comprised of ROper...

Страница 4: ......

Страница 5: ...General information 7 At a glance 13 Safety 29 Driving mode working mode 33 Maintenance and care 45 Notes on maintenance 59 Decommission and protection 79 Breakdown assistance 85 Technical data 99 Con...

Страница 6: ...t 34 Mixing ratio 48 Renewing 75 Service product 48 Coolant engine Topping up 76 Coolant additive 48 Cooling system Degreasing 76 Flushing 76 Correct use 9 Corrosion inhibitor antifreeze agent 48 Cran...

Страница 7: ...ter fuel 53 refuelling 41 Sulphur content table 51 Fuel filter 67 Fuel grade 50 G Genuine Mercedes Benz parts 7 8 Getting started 35 H High pressure cleaning 55 I Identification plate 100 Indicator an...

Страница 8: ...Disposing of AdBlue DEF 55 Engine oil 46 FAME fatty acid methyl ester fuel 53 Flow improvers 52 Fuel additives 52 Purity of AdBlue DEF 55 Storing AdBlue DEF 55 Specialist workshop 11 Starting see Star...

Страница 9: ...hich includes for example regular checks of the oil level G WARNING Accidents can occur as a result of engine damage caused by improper use of the engine Therefore please follow the engine operating i...

Страница 10: ...n and safety may be affected which can result in accidents and personal injury Always have work on or modifications to the engine carried out at a qualified specialist workshop that has the necessary...

Страница 11: ...y of registration Or also in another country where you operate the vehi cle equipment Legal requirements If the engine vehicle equipment is not oper ated within the limits of the emissions laws and re...

Страница 12: ...n on the implied warranty A well developed network of Mercedes Benz and MTU Service Centres is available to carry out maintenance work Mercedes Benz and MTU Service Centres Rhave special equipment and...

Страница 13: ...or MTU Service Centre for further information Qualified specialist workshop A qualified specialist workshop has the nec essary specialist knowledge tools and quali fications to carry out the work req...

Страница 14: ...12...

Страница 15: ...Exterior view 14 General information 21 13 At a glance...

Страница 16: ...904 LA Filler neck Stop button Start button Air compressor A Power steering pump B Engine control MR control unit C Oil dipstick D Refrigerant compressor E Tensioning pulley F Coolant pump G Fuel pref...

Страница 17: ...tering unit Charge air pipe of the charge air cooler Charge air pipe to the charge air cooler Crankcase ventilation hose A Oil filter B Tensioning pulley C Alternator D Starter E Intake air inlet F En...

Страница 18: ...Start button Air compressor A Power steering pump B Engine control MR control unit C Oil dipstick D Refrigerant compressor E Tensioning pulley F Fuel filter G Coolant pump H Fuel prefilter I Coolant o...

Страница 19: ...arge air pipe of the charge air cooler Charge air pipe to the charge air cooler Crankcase ventilation hose A Oil filter B Tensioning pulley C Alternator D Starter E Intake air inlet F Exhaust gas turb...

Страница 20: ...ple OM 926 LA Oil temperature Oil pressure Coolant temperature Charge air temperature charge air pressure A TDC sensor on camshaft gear B Crankshaft position sensor on flywheel C Oil level D Fuel temp...

Страница 21: ...cer Temperature and humidity sensor air filter clean air side Metering unit A Temperature sensor downstream of catalytic converter B NOx sensor C Temperature sensor upstream of catalytic converter D S...

Страница 22: ...ture and humidity sensor air filter clean air side Metering unit A Temperature sensor downstream of catalytic converter B NOx sensor C Temperature sensor upstream of catalytic converter D SCR frame mo...

Страница 23: ...o inlet valves and one outlet valve Each cylinder has its own fuel injection pump unit pump with a short high pressure fuel injection line to the multi hole nozzle at the centre of the combustion cham...

Страница 24: ...ntrol unit is on the left side of the engine Example OM 926 LA engine control unit The engine control unit processes values from the FR drive control unit and the ADM These are for example the value f...

Страница 25: ...on stant throttle valve If the electronic engine control detects a fault the fault code is saved in the control units It can be read out with the correspond ing diagnostic testers STAR DIAGNOSIS or mi...

Страница 26: ...Example EU compliant service connector 24 General information At a glance...

Страница 27: ...r starting the engine or if it goes on while the engine is running the alternator or poly V belt is faulty Cold start aid Lights up if the cold start aid is active BlueTec exhaust gas aftertreatment o...

Страница 28: ...as turbo charger in conjunction with constant throttle valves OM 904 LA OM 924 LA constant throttle valve Constant throttle valve Pneumatically actuated line OM 926 LA constant throttle valve Constant...

Страница 29: ...es emissions after starting the engine In addition it reduces the load on the starter motor and batteries and enables the engine to be started more rapidly For this reason you should only start the en...

Страница 30: ...28...

Страница 31: ...Safety precautions 30 Staff qualifications 30 Organisational measures 30 29 Safety...

Страница 32: ...devices that are not connected to an external aerial can cause malfunc tions in the vehicle electronics and thus endanger the operating safety of the engine Staff qualifications G WARNING If maintenan...

Страница 33: ...uctions and the Maintenance Booklet readily accessible in the area of engine operation In addition to the Operating Instructions other general country specific legal and other binding regulations on a...

Страница 34: ...32...

Страница 35: ...Operation 34 Continuous brake 40 Driving tips 40 Refuelling 41 Winter operation 43 33 Driving mode working mode...

Страница 36: ...utes X Check the engine oil level with oil dip stick The oil level should be between the upper and lower marks on oil dip stick X If necessary add oil via filler neck Do not add too much oil when topp...

Страница 37: ...elf and rotating engine parts including when the engine is being started Rwait until all engine parts have stopped moving before carrying out any work on the engine Rwear work clothing which is fasten...

Страница 38: ...below 20 before starting X Vehicles equipment with cold start aid wait until the indicator lamp in the instrument cluster goes out X Turn the key to start position 3 in the igni tion lock While doing...

Страница 39: ...To increase the engine speed while the engine is running press start button again and hold it down until the desired engine speed is reached After releasing start button the engine continues to run a...

Страница 40: ...essure may not drop below the following values R2 5 bar at rated speed R0 5 bar at idling speed If the oil pressure falls below these values stop the engine and trace the cause Operating restrictions...

Страница 41: ...ult is correc ted This is the case for example after filling up with AdBlue DEF of the correct quality Deleting the fault memory A fault stored in the fault memory because of the operating restriction...

Страница 42: ...system several times WhenBlueTec exhaust gas aftertreatment flushes the exhaust system an air valve is activated You may then hear a hissing sound This hissing sound does not indicate a leak in the c...

Страница 43: ...acceleration and braking Rstay within the economical engine speed range Operating conditions Fuel consumption can increase due to poor operating conditions Observe the following notes Ravoid driving i...

Страница 44: ...es fully drained Do not add any special fuel additives to the diesel fuel or fatty acid methyl ester FAME fuel Special fuel additives can lead to Rmalfunctions Rdamage to the catalytic converter Rengi...

Страница 45: ...roll ing away X Switch off the auxiliary heating system Bleeding the fuel system If the fuel system is run dry the system will be bled the next time the engine is started after refuelling Automatic c...

Страница 46: ...c Avoid contact with the skin eyes or clothing Wear suitable protective clothing in particular gloves an apron and a face mask Immediately rinse acid splashes off with clean water Consult a doctor if...

Страница 47: ...Service products 46 Cleaning and care 55 Maintenance 56 45 Maintenance and care...

Страница 48: ...ice products are for example Rfuels e g diesel Rlubricants e g engine and transmission oils hydraulic fluids greases Rantifreeze coolant RAdBlue DEF BlueTec exhaust gas after treatment reduction agent...

Страница 49: ...28 5 228 51 228 3 228 31 For engines without BlueTec exhaust gas aftertreatment oils compliant with Sheet no 228 1 can also be used This is also required for a mixture of conventional diesel fuels and...

Страница 50: ...mplied with when disposing of engine oils Information is available from any Mercedes Benz or MTU Service Centre Adding topping up the engine oil Do not add too much oil If you add too much oil the eng...

Страница 51: ...et 325 3 and 326 3 Coolant change with corrosion inhibitor anti freeze agent compliant with Sheet 325 3 326 3 before adding this corrosion inhibitor antifreeze agent the cooling system must first be f...

Страница 52: ...nce intervals must be reduced when operating with higher sulphur contents For details on this see the table below Even if the mainte nance intervals are reduced operation with higher sulphur contents...

Страница 53: ...erbaijan Belarus Belgium Bos nia Herzegovina Bulgaria Denmark Germany Estonia Finland France Georgia Greece United Kingdom Ire land Iceland Italy Croatia Latvia Lithuania Luxem bourg Malta Macedonia M...

Страница 54: ...ies You can normally use winter diesel fuel without prob lems at the outside temperatures expected in the country where it is on sale Fuel additives General notes Fuel additives used to improve flow c...

Страница 55: ...ts Rif the vehicle is not used for long periods of time FAME fatty acid methyl ester fuel can clog fuel system components For this reason use all the FAME fatty acid methyl ester fuel before long peri...

Страница 56: ...o contact with painted or aluminium surfaces when filling the tank rinse the affected area immedi ately with plenty of water High outside temperatures G WARNING If the AdBlue DEF tank cap is opened at...

Страница 57: ...rity Impurities in AdBlue DEF e g due to other service products cleaning products or dust may lead to Rincreased emission values Rdamage to the catalytic converter Rengine damage Rmalfunctions in Blue...

Страница 58: ...ating to main tenance and repair measures e g the Oper ating Instructions and workshop information In particular first familiarise yourself with the legal regulations e g work safety and acci dent pre...

Страница 59: ...cedes Benz parts and accessories that have been expressly approved for the engine by Mercedes Benz The scope of maintenance and frequency of maintenance work depend on the different operating conditio...

Страница 60: ...58...

Страница 61: ...Work schedule overview 60 Work schedules 62 59 Notes on maintenance...

Страница 62: ...351A7 Check poly V belt for wear and tear and damage Additional maintenance work every second maintenance service Z2 AP05 30 W 0560A7 Check V2 valve clearance adjust first maintenance service third fi...

Страница 63: ...P20 00 W 2050A7 Heating system condition check radiator lines and hoses Every three years J3 Engine AP20 00 W 2080A7 Renew coolant according to Sheet Number of the antifreeze anti corrosion additive i...

Страница 64: ...into oil filter cap and press until it clips into place X Screw on oil filter cap with the oil filter element and tighten Tightening torque 25 Nm Siphoning and draining engine oil H Environmental not...

Страница 65: ...gine oil in accordance with outside tem peratures X Start the engine without depressing the accelerator pedal When running at idling speed observe the oil pressure display Keep the engine running at i...

Страница 66: ...g brake and if necessary using chocks RShift the transmission into neutral ROnly turn the engine over using the crank ing device provided for this purpose G WARNING If the engine starts automatically...

Страница 67: ...inder valves to be adjusted 1 2 3 4 5 6 4th cylinder valve over lap I E I A 1st cylinder valve over lap A I I E I inlet valve E exhaust valve Valve clearance setting OM 906 926 LA Crankshaft position...

Страница 68: ...own off the engine thereby causing injury to others RAlways observe the specified maintenance intervals for poly V belts RIf damage is detected replace the poly V belt concerned immediately If the pol...

Страница 69: ...belt C Deposits of dirt or stones D Rib detached from the base of the belt E Cord torn out of the side F Outer cord frayed G Transverse cracks on the back of the belt H Transverse cracks in several ri...

Страница 70: ...r at tank level close shutoff valve X Place a collector under water drain valve E X Open water drain valve E and bleed screw Collect the escaping water fuel mix ture X Unscrew filter element A from fi...

Страница 71: ...re in the fuel tank X Unscrew fuel filter cap using a socket spanner insert SW 36 X Pull fuel filter cap with filter element out of the filter housing slightly Allow the fuel to drain off X Remove the...

Страница 72: ...ctive gloves protective clothing and safety goggles If AdBlue DEF gets into the coolant cir cuit even minute amounts thermostats and temperature sensors will be damaged RAlways keep AdBlue DEF complet...

Страница 73: ...nt system could result The system is self bleeding and does not need to be bled manually Filling the AdBlue DEF pressure res ervoir Important safety notes G WARNING If the AdBlue DEF tank cap is opene...

Страница 74: ...e pressure if neces sary X To increase the pressure press pump lever A Adjust the pressure to 0 2 bar above the specified operating pressure When the fill ing hose is disconnected from the valve a pre...

Страница 75: ...coolant expansion tank there is a risk of scalding due to hot coolant spraying out The cooling system and coolant expansion tank are pressurised when the engine is at operating temperature Wear gloves...

Страница 76: ...ssure tester tool on the filler neck of the coolant expansion tank X Connect the compressed air hose with tyre inflation connection to pressure tester tool and set it to a test pressure of 1 0 bar The...

Страница 77: ...ing the coolant check the cool ing and heating system for leaks and condi tion Have the coolant renewal confirmed in the Maintenance Booklet Draining the coolant H Environmental note Dispose of used c...

Страница 78: ...r clothing In case of contact with eyes rinse immediately with plenty of clean water Clean affected areas of skin and clothing with soap and water imme diately Change any affected clothing imme diatel...

Страница 79: ...damage and leaks at connection points X Check all hose clamps for correct seating Retighten or replace loose hose clamps X Replace porous leaking or damaged lines and bellows G WARNING The engine beco...

Страница 80: ...78...

Страница 81: ...Decommissioning the engine 80 Protecting the engine 81 79 Decommission and protection...

Страница 82: ...mpletely so that AdBlue cannot crys tallise out RFuel prefilter with heated water separator drain off the water separator Engine vehicle equipment with exhaust gas aftertreatment RDecommissioning for...

Страница 83: ...h auxiliary heating activate the auxiliary heating RCheck oil levels in the steering system engine transmission and drive axles RCheck that the electrical system steering system and brakes are functio...

Страница 84: ...the engine is cold coolant temperature under 50 Only use initial operation oil compliant with Sheet 225 6 for the protection of the com bustion chambers X Detach the charge air housing from the cyl in...

Страница 85: ...rags that have been fit ted X Fit removed engines and connect all cables hoses and lines X Remove protective agents and greases from all protected areas such as the fly wheel pulley keyway etc X Tens...

Страница 86: ...84...

Страница 87: ...ating engine emergency run ning mode 87 Troubleshooting 89 BlueTec exhaust gas aftertreat ment indicator on highway ver sion 94 BlueTec exhaust gas aftertreat ment indicator off highway ver sion 95 Re...

Страница 88: ...specialist workshop Mercedes Benz recommends that you go to a Mercedes Benz or MTU Service Centre as they have the necessary knowledge and tools to carry out the required work Y page 11 In particular...

Страница 89: ...ress the fuel hand pump after the engine has started This could otherwise damage the hand pump Activating engine emergency running mode Emergency mode for on highway applications Emergency mode can be...

Страница 90: ...output can be activated with an emergency switch for devices with Euromot 3B or Tier 4i certified engines off highway applications Emergency mode can only be activated for 30 minutes and only if the...

Страница 91: ...ectify certain faults yourself Have malfunctions that you cannot eliminate yourself rectified at a qualified specialist work shop Mercedes Benz recommends that you use a Mercedes Benz or MTU Service C...

Страница 92: ...fied specialist workshop Power supply to the MR ADM control units is interrupted or there is a short circuit in the wiring X Have the power supply checked at a qualified specialist work shop There are...

Страница 93: ...e air pressure sensor and replace if necessary X Consult a qualified specialist workshop Engine brake flap is faulty or stuck X Function check and visual inspection Y page 72 The engine diagnostics in...

Страница 94: ...oolant temperature gauge There is not enough coolant in the cooling system X Top up bleed Y page 76 Coolant temperature sensor or display is faulty X Replace sensor or display Poly V belt is damaged X...

Страница 95: ...mes are blue The oil level in the engine is too high the crankcase ventilation system is faulty engine oil has entered the combustion chamber X Adjust the oil level correctly X Have the crankcase vent...

Страница 96: ...le equipment may be affected You could lose control of the vehicle equipment and cause an accident The safety systems may also no longer be able to protect you or others as they are designed to Always...

Страница 97: ...duced8 X Have the BlueTec exhaust gas aftertreatment checked as soon as possible at a qualified specialist workshop Engines with BlueTec exhaust gas aftertreatment When the AdBlue DEF tank is filled o...

Страница 98: ...e DEF quality is not OK the system registers the following warnings AdBlue DEF quality System message Trigger 3 AdBlue DEF quality is not OK The AdBlue DEF indicator lamp lights up 60 minutes after tr...

Страница 99: ...ghts up RThe torque limitation indicator lamp lights up 180 minutes after trigger 4 RThe AdBlue DEF indicator lamp flashes RThe indicator lamp lights up RThe torque limitation indicator lamp lights up...

Страница 100: ...ing back the tensioning device X Check that both the tensioning device and the belt pulley are in perfect condition e g check for worn bearings on the tensioning device tensioning pulley and guide pul...

Страница 101: ...icle identification plate 100 Information on the identification plate 100 Engine model designation 100 Engine data card 100 Engine data 101 Operating restriction off highway version 106 99 Technical d...

Страница 102: ...le identification plate for non road vehicles off highway engines Manufacturer s name Engine type description Type approval number Engine number Engine model designation Example engine model designati...

Страница 103: ...incorrect ordering of replacement parts the Mercedes Benz replacement parts service must also be informed Engine data Dimensions and weights All data refers to the standard version of the respective e...

Страница 104: ...Weights OM 904 LA OM 924 LA OM 906 LA OM 926 LA Dry engine maximum 395 kg 530 kg Wet engine maximum 420 kg 573 kg 102 Engine data Technical data...

Страница 105: ...displacement 130 mm 136 mm 130 mm 136 mm Engine capacity 4250 cm3 4800 cm3 6370 cm3 7200 cm3 Type of cooling system Forced circulation cooling Engine rotation direc tion Anticlockwise when looking at...

Страница 106: ...l operation Approximately 80 95 Approximately 80 95 Maximum permissi ble coolant tempera ture 100 100 Capacities Capacity approx imately Service product sheet no 9 Engine with oil filter OM 904 LA OM9...

Страница 107: ...2 0 Engine com partment Protective wax Wax preservative 385 4 Engine brake Heat resistant lubricant Heat resistant lubricant part number A000 989 76 51 Tightening torques All threads on mechanical com...

Страница 108: ...n AdBlue DEF level low Insufficient AdBlue DEF left warning and sequence of operating restriction A Acknowledged fault B Minor operating restriction C Speed torque reduction D Major operating restrict...

Страница 109: ...ault a Regular operating restriction b Operating restriction after first recurrence of fault c Operating restriction after second recur rence of fault Operating restriction off highway version 107 Tec...

Страница 110: ...108...

Страница 111: ...itorial office You are welcome to forward any queries or suggestions you might have regarding these Operating Instructions to the technical docu mentation team at the following address Daimler AG HPC...

Страница 112: ...Order no 6462 9820 02 Part no 926 584 06 81 Edition A 06 11 9265840681 9265840681...

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