SM - Volvo Ec300d L (Ec300dl) Excavator
SM - Volvo Ec300d L (Ec300dl) Excavator
SM - Volvo Ec300d L (Ec300dl) Excavator
Engine, description
Engine D8H is a straight six-cylinder, four-stroke, turbocharged diesel engine with direct injection and intercooler. The
engine meets governing legislation according to Tier 4 interim for exhaust emissions.
The engine features a Common Rail Fuel System controlled by the Engine Electronic Control Unit (E-ECU). The engine with
ACT (Advanced Combustion Technology) features split injection and turbocharger with mechanical wastegate. The Exhaust
Aftertreatment System (EATS) is equipped with a Diesel Oxidation Catalyst (DOC) and a Diesel Particulate Filter (DPF) to
reduce the particulate content in the exhausts. Cooled Exhaust Gas Recirculation (EGR) reduces NO contents and reduces
emissions. All electronic functions in the engine are controlled by Volvo's Engine Management System, EMS2.2.
For more information, see:
The cylinders are numbered in sequence, starting at the flywheel. Ignition order: 1-5-3-6-2-4. The engine's rotational
direction is counter-clockwise, seen from the flywheel side.
Engine identification
Figure 1
Identification plates
The engine's serial number is stamped on the cylinder block's side. The identification plates on the cylinder block's side and
on the valve cover contain model designation, serial number, manufacturing country, recommended fuels, and so on. The
identification plates also include emission-related supplementary information. The engine's model designation and serial
number must be indicated when ordering spare parts.
Engine protection
The ECU contains functionality designed to protect the engine from damage during extreme operating conditions or from
further damage when an essential engine component fails. There are several proactive functions, and different applications
have different functions activated. The functions that can be activated are:
Various protective actions such as warning lights, engine torque reduction, engine speed limitation, and vehicle speed
limitation may be taken when the above functions reach dangerous levels that may damage the engine. In order to always
allow the operator to move a machine away from an unsafe situation, there is a delay of at least 30 seconds before the
protective actions (such as forced idle and forced shutdown) are activated after a Key-ON. If the engine has been forced to
shut down or forced to idle due to an active engine protection function, the operator can obtain a 30 second delay by
powering down the EMS with a Key-OFF for 7 seconds and then a Key-ON (the EMS is powered down by the Vehicle-ECU
(V-ECU) after the ignition key has been in its OFF position for approx. 7 seconds). In addition to the above protective
functions, other software functions may request engine protection, such as:
High Altitude (ensures that high compressor charge-air temperature is never reached)
Low Coolant Temp
Crank Sensor Failure
Gear Ratio
Regeneration
Warning lights
There are two levels for warning lights, an amber caution light and a red stop light.
Supplementary information
Function check
Diagnostics
Detailed information about the following relevant warnings and error codes is available under the diagnostics tab.
Component locations
Figure 1
Engine, front side
Figure 2
Engine, back side
1. Park the machine in the service position A, see 091 Service positions.
4. Connect the VCADS Pro computer to the machine, and perform the operation '28423-7 MID 128 control unit,
programming'.
5. When VCADS Pro 'MID 128 ECU, programming' window appears, follow the instructions for replacing E-ECU.
6. Disconnect the wiring harness connectors from E-ECU and remove 2 screws fixing the clamps.
Figure 1
1. Connector
2. Screw
3. Screw
NOTE!
Pull up the locking device to disconnect the connector.
9. Connect the wiring harness connectors to the E-ECU and tighten 2 screws fixing the clamps.
10. After replacing E-ECU, press OK button of VCADS Pro operation '28423-7 MID 128 control unit, programming'.
Now VCADS Pro starts the programming of software and parameters to the new E-ECU.
NOTE!
If not able to read out the parameters with the program operation, the VCADS Pro operation 25438–8 “Nox sensor,
age compensation, reset” has to be performed.
Service Information
1. Park the machine in the service position A, see 091 Service positions.
3. Connect VCADS Pro computer to the machine, and perform the operation '17030-3 Parameter, programming'.
5. Disconnect the wiring harness connectors from E-ECU and remove 2 screws fixing the clamps.
Figure 1
1. Connector
2. Screw
3. Screw
NOTE!
Pull up the locking device to disconnect the connector.
8. Connect the wiring harness connectors to the E-ECU and tighten 2 screws fixing the clamps.
9. Connect VCADS Pro computer to the machine, and perform the operation 17030-3 Parameter, programming'. Now
the customer parameters are changed according to the job card saved at step 2.
10. Perform VCADS Pro operation 25438–8 “Nox sensor, age compensation, reset”.
Service Information
Operation Application
20046-3 Read out engine information The operation is used to read out the engine emission and engine certificate
information when requested by the customer or other interested parties.
21006-3 Cylinder compression, test Used when there is a suspicion of fault and/or at abnormal values/readings.
This test indicates if there is any deviation in compression in any cylinder in
relation to the other cylinders.
As a first check this operation is both easy and fast to perform instead of a
real compression test.
23017-3 Feed pressure, inspection Used when there is a suspicion of fault and/or at abnormal values/readings.
23712-3 Injectors shut off, manual Used when there is a suspicion of fault and/or at abnormal values/readings.
23777-3 Fuel system, check Check the fuel system on common rail engines.
In this test, it is possible to check the engine at different running condition.
25410-3 Air pump exhaust aftertreatment, Used when there is a suspicion of fault and/or at abnormal values/readings.
test Air for combustion and HC injection
25411-3 Burner exhaust aftertreatment, test Used when there is a suspicion of fault and/or at abnormal values/readings.
25433-3 Fuel system exhaust aftertreatment, Used to remove any air in the EATS system.
bleeding
25438-3, Nox sensor, age compensation, Used to reset the age compensation value stored in the MID 128, E-ECU.
reset A reset is needed either when the E-ECU is replaced and there is no
possibility to read out the values from the old E-ECU or when a new Nox
sensor is mounted.
25440-3 Fuel pressure, exhaust The test checks;
aftertreatment system, test The fuel supply to the shut off valve, pressure and temperature
The pressure after MV1 to the HC injector
The pressure after MV2 to the burner
25456-3 Exhaust aftertreatment diagnostics Perform a simple check of the included components in the exhaust
aftertreatement system.
25457-3 Diesel Particulate Filter Service Used when the soot load level becomes higher than what can be removed
Regeneration by the normal regeneration process.
See 254 Exhaust Aftertreatment System, description
25460-3 Reset soot and ash load When the diesel particulate filter has been changed, the soot load and the
ash load must be reset. The reset is needed to indicate to the system that
the filter has been cleaned.
The soot load and ash load must only be reset if a clean filter has been
installed.
27502-2 Engine speed control, test Used when there is a suspicion of fault and/or at abnormal values/readings.
28407-3 Sensor values, monitoring Used when there is a suspicion of fault and/or at abnormal values/readings.
28420-3 Flywheel and camshaft signal, test Used when there is suspicious of faulty signals or faulty connected sensor.
Programming
Operation Application
25801-3 MID 233 Control unit, programming When changing ACM or only reprogramming. See
254 ACM, replacing, non-programmed
25802-3 MID 233 Control unit, campaign
28423-3 MID 128 ECU, programming When changing ECU or only reprogramming. See
200 E-ECU, MID 128, changing non-programmed ECU
28422-3 MID 128 ECU, campaign
Service Information
Figure 1
Engine characteristic curve, ISO 14396 Gross power
P Output power
rpm Engine speed
T Torque
be Fuel consumption
Service Information
Engine, removing
Op nbr 210-070
WARNING
Risk of burns - stop the diesel engine and allow it to cool down before starting any work.
WARNING
Removal of residual pressure from the circuit must be done prior to any maintenance.
NOTE!
Cable ties and clamps that secure hoses and electrical wiring must be removed and then replaced when installing
components.
NOTE!
Disconnected hoses, lines and connections must be plugged. Oil that drains from hoses, lines and connections should be
collected in a container.
Figure 1
1. DPF hood
2. Engine hood
3. Radiator hood
5. Remove the engine room cowl frame with the engine hood using a lifting device.
Figure 2
Figure 3
7. Disconnect wire harness connector and the hose (3) from the expansion tank.
Remove the hose (2).
Figure 4
Figure 6
10. Remove the radiator under cover and the engine room under covers.
Figure 7
1. Radiator under cover
2. Engine room under cover
Figure 8
Figure 9
1. Screw
2. Cooling fan guard
13. Remove the mounting screws and lay down the cooling fan inside the radiator shroud safely.
Figure 10
1. Screw
2. Cooling fan
14. Remove the main pump. See 913 Hydraulic pump, replacing
Figure 11
1. Fuel hose
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