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MTU 20V4000G43 - User Manual

MTU 20V4000G43
309 pages
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Operating Instructions
Diesel engine
20V4000Gx3x
6 exhaust turbochargers
MS150093/05E

Table of Contents

Questions and Answers

  • D
    Derek CollinsAug 16, 2025
    Why MTU Engine does not turn when starter is actuated?
    • M
      margaret52Aug 17, 2025
      If the MTU Engine doesn't turn when starting, it might be due to a low or faulty battery, in which case you should charge or replace it. Another cause might be faulty cable connections; ensure they are securely seated. Other possible causes are related to the starter or engine wiring, and require contacting service.
  • D
    Dennis LawrenceAug 19, 2025
    What to do if MTU Engine fires unevenly?
    • K
      Katrina HopkinsAug 19, 2025
      If your MTU Engine fires unevenly, the possible cause is a defective injector, which needs to be checked and replaced if necessary. Other potential causes include faulty engine wiring or air in the fuel system, which may require venting the fuel system. A defective engine governor could also be the reason and requires contacting service.
  • A
    Abigail ParksAug 22, 2025
    Why MTU Engine does not reach nominal speed?
    • B
      Brittany HernandezAug 22, 2025
      If the MTU Engine does not reach nominal speed, it could be due to a clogged fuel prefilter or fuel filter, which needs to be replaced. Another cause is a clogged air filter, you should check the signal ring position of the service indicator. A defective injector could also be the reason, and it needs to be replaced. Other possible causes include faulty engine wiring or engine overload, and require contacting service.
  • B
    Bruce BaileyAug 25, 2025
    What to do if MTU Engine turns on starting but does not fire?
    • K
      kathrynguzmanAug 25, 2025
      If the MTU Engine turns on starting but does not fire, it could be due to poor rotation by the starter because of a low or faulty battery, which needs to be charged or replaced. If using an air starter, the pressure might be too low, so check the compressed air system. Other possible causes include faulty engine wiring or air in the fuel system, which may require venting the fuel system. A defective engine governor could also be the reason and requires contacting service.
  • R
    Rhonda WilliamsAug 27, 2025
    How to fix black exhaust gas from MTU Engine?
    • P
      Patrick RobertsAug 27, 2025
      If the MTU Engine emits black exhaust gas, it might be due to a clogged air filter; check the signal ring position of the service indicator. Another possible cause is a defective injector, which needs to be replaced. Engine overload could also be the reason, and requires contacting service.
  • S
    Stacy SmithAug 30, 2025
    Why MTU Engine speed is not steady?
    • J
      jacquelineserranoAug 30, 2025
      If the MTU Engine speed is not steady, it could be due to a defective injector, which needs to be replaced. Other possible causes include a defective speed transmitter, air in the fuel system (requiring the fuel system to be vented), or a defective engine governor, and requires contacting service.
  • D
    Douglas DavidSep 2, 2025
    How to decrease charge-air temperature in MTU Engine?
    • J
      Jamie MillerSep 2, 2025
      If the charge-air temperature is too high in your MTU Engine, it might be due to incorrect engine coolant treatment, which needs to be checked. Another cause might be a dirty intercooler or high air-intake temperature in the engine room, so check the fans and intake/exhaust lines. Intercooler requires contacting service.
  • T
    Tim RamosSep 5, 2025
    What causes blue exhaust gas in MTU Engine?
    • D
      Diana HallSep 5, 2025
      If the MTU Engine emits blue exhaust gas, it could be due to too much engine oil in the engine, so drain some engine oil. Another possible cause is a contaminated oil separator of the crankcase breather, which means you need to replace the filter. Other possible causes include defective exhaust turbocharger, cylinder head, piston rings, or cylinder liner, and requires contacting service.
  • J
    Jessica OsbornSep 7, 2025
    How to troubleshoot low charge-air pressure in MTU Engine?
    • D
      Damon MillerSep 7, 2025
      If the charge-air pressure is too low in your MTU Engine, it might be due to leaking air pipework, so check the air pipework for leakage. Another cause might be a clogged air filter, check the signal ring position of the service indicator. Other possible causes include a dirty intercooler or a defective exhaust turbocharger, and requires contacting service.
  • W
    westdwayneSep 10, 2025
    What causes white exhaust gas from MTU Engine?
    • A
      Adam PettySep 10, 2025
      If the MTU Engine emits white exhaust gas, it could be because the engine is not at operating temperature, so run the engine to reach operating temperature. Another cause might be water in the fuel, so check the fuel system on the fuel prefilter and drain water from the fuel prefilter. A leaky intercooler could also be the reason and requires contacting service.

Summary

2 Safety

2.1 Important provisions for all products

General safety guidelines applicable to all products.

2.2 Correct use of all products

Guidelines for intended use and proper operation of the product.

2.4 Safety regulations for initial start-up and operation

Safety rules for starting and operating the engine.

2.5 Safety regulations for assembly, maintenance, and repair work

Safety precautions for assembly, maintenance, and repair activities.

3 Transport

5 Technical Data

5.1 Product data 20 V4000 Gx3 x, continuous operation 3 A, optimized fuel consumption

Technical specifications for continuous operation 3A, optimized fuel consumption.

5.2 Product data 20 V4000 Gx3 x, continuous operation 3 B, optimized fuel consumption

Technical data for continuous operation 3B, optimized fuel consumption.

5.3 Product data 20 V4000 Gx3 x, continuous operation 3 B, optimized exhaust gas emission (TA-Luft)

Technical data for continuous operation 3B, optimized for TA-Luft emissions.

5.6 Product data 20 V4000 Gx3 x, standby operation 3 D, optimized fuel consumption

Technical data for standby operation 3D, optimized fuel consumption.

5.9 Product data 20 V4000 Gx3 x, standby operation 3 E, optimized fuel consumption

Technical data for standby operation 3E, optimized fuel consumption.

5.10 Product data 20 V4000 Gx3 x, standby operation 3 E, optimized exhaust gas emission (TA-Luft)

Technical data for standby operation 3E, optimized for TA-Luft emissions.

5.11 Product data 20 V4000 Gx3 x, standby operation 3 E, NEA Singapore for ORDE and China Nonroad Mobile Machinery Stage III

Technical data for standby operation 3E, NEA Singapore and China Stage III compliant.

5.12 Product data 20 V4000 Gx3 x, standby operation mode 3 F, optimized fuel consumption

Technical data for standby operation 3F, optimized fuel consumption.

6 Operation

6.1 Putting the engine into operation after extended out-of-service periods (>3 months)

Procedure for re-commissioning the engine after prolonged shutdown.

6.2 Putting into operation after scheduled out-of-service-period

Steps for putting the engine back into operation after scheduled maintenance.

6.3 Starting the engine in manual mode (test run)

Procedure for starting the engine manually for testing purposes.

6.4 Re-starting the engine following an automatic safety shutdown

Guidelines for restarting the engine after an automatic safety shutdown.

7 Troubleshooting

7.1 Troubleshooting

Common engine faults, their causes, and corrective actions.

7.2 Engine Control Unit ADEC (ECU 7) for Series 4000 genset engines - Fault messages

List of fault messages from the ADEC ECU and their corrective actions.

8 Maintenance

8.1 Maintenance task reference table [QL1]

Table of required maintenance tasks, options, and corresponding measures with page references.

9 Task Description

MTU 20V4000G43 Specifications

General IconGeneral
Engine Model20V4000G43
Engine TypeDiesel
ConfigurationV
Number of Cylinders20
Speed1500 RPM
Bore170 mm
Displacement95.4 L
Cooling SystemWater-cooled
AspirationTurbocharged
Compression Ratio16.5:1
Fuel Consumption at 100% LoadApprox. 200 g/kWh
Emissions ComplianceEPA Tier 2 / IMO Tier II

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