Excavators, loaders and dumpers
Crawler and wheeled excavators, wheel and telehandlers and dumpers are pre-checked by engine, ECU, emissions stage, hydraulic duty and data access.
Excavators · loaders · dozers · working machinery
Software calibration and diagnostics for construction and working machinery
When engine speed collapses under hydraulic load, a machine derates or DPF, EGR and AdBlue/SCR warnings restrict work, the engine side must be separated from the working function. MG AutoTech assesses drive-side software, ECU, live data and emissions aftertreatment.
Illustrative photo for construction and work machinery; not an MG AutoTech customer project.
Relevant service areas
One starting point, clear technical detail.
This page explains the operating context. Technical detail remains on the established service pages so that explanations are neither duplicated nor contradictory.Software & drivetrainEngine software and calibration · Transmission and TCU calibration
Engine software and calibration
Calibrate torque delivery, response and output only after checking condition, load profile and control unit.
View service detailsTransmission and TCU calibration
Assess shift logic, torque release and protection limits only where the transmission and controller are technically suitable.
View service detailsDiagnostics & live dataDiagnostics, fault codes and live data
Diagnostics, fault codes and live data
Classify limp mode, derating, warnings and loss of power systematically instead of replacing parts on suspicion.
View service detailsControl units & dataECU / TCU and control-unit service · Control-unit cloning and data transfer · ECU repair and fault assessment
ECU / TCU and control-unit service
Check identification, readout, backup, programming and technical access for the system actually installed.
View service detailsControl-unit cloning and data transfer
When replacement is required, assess transfer to a technically matching unit; not every controller is fully readable or compatible.
View service detailsECU repair and fault assessment
Check supply, communication, hardware and data state, then assess repair, programming and replacement as separate routes.
View service detailsPrices and turnaround times shown on linked passenger-car offers do not automatically apply to these vehicle and machine classes. A specific quotation follows the technical pre-check.
Symptoms and search situations
Where does the technical assessment begin?
The same symptom can come from software, sensors, mechanics, electrics or the emissions system. Classification therefore comes before any change.Engine-speed drop under hydraulic load
Engine speed falls sharply while lifting, digging, loading or travelling. Engine output, hydraulic demand and control must be measured separately.
Derating or limp mode at work
The machine limits torque or rpm. Codes, temperature, boost, fuel supply and aftertreatment data identify the cause.
Frequent or interrupted regeneration
Long idle time and low load can reduce exhaust temperature, while sensor or engine faults can also prevent DPF regeneration.
AdBlue/SCR fault and derating
Dosing, pump, lines, temperature and NOx sensors and communication are checked before a measure is selected.
ECU failure or replacement unit
With lost communication, water damage, overvoltage or replacement need, repairability, data access and the cloning route are assessed individually.
More usable engine output
An adjustment is assessed against engine, cooling, driveline, hydraulic demand, protection functions and real duty—not a generic peak figure.
Vehicle and machine types
Which construction and working machines can be submitted?
The request covers engine control and drive-related systems. Hydraulic, brake, lifting, load-moment and other safety controllers are separate specialist areas and are not automatically included.Dozers, graders, rollers and specialist machines
Crawler tractors, dozers, graders, rollers and other working machines use different engine/controller networks and duty cycles.
Powered cranes and carrier vehicles
For mobile cranes or crane carriers, the engine/vehicle side can be submitted. Crane controls, load-moment limiters, hoists and safety-critical functions are expressly separate.
Operating context, not a generic file
Engine fault or hydraulic fault? The distinction matters.
A weak working function does not prove an engine-software fault. Pumps, valves, pressure control, hydraulic temperature, driveline and engine management can create similar behaviour. Diagnostic and machine data must show where power is lost.
On modern Stage V machinery, idle share, load, exhaust temperature and sensors affect regeneration. “Off-road” is neither a technical nor a legal blanket permission for changes to DPF, EGR, AdBlue or SCR.
Workflow
From the first message to a sound decision.
A clear workflow separates assumptions, the available data and the technical decision.- 01
Identify the machine precisely
Manufacturer, type, year of manufacture, engine, output, control unit and existing modifications are reviewed together.
- 02
Separate the fault from the data state
Warnings, fault codes, live data and real use determine whether diagnosis, repair or software work comes first.
- 03
Confirm feasibility and scope
Only after the pre-check are the work route, required documents and a specific quotation agreed.
Send the right information first time
Send these details to begin the machine assessment.
Send clear photos of data plates and display messages. A video can show when rpm or power falls under working load.
Request a machine check via WhatsApp- 01
Manufacturer, model, serial/machine number and year of manufacture
- 02
Engine manufacturer, engine type, output and emissions stage
- 03
Operating hours and a photo of the engine or ECU label
- 04
Fault code, display message and diagnostic report
- 05
Working function, load and temperature when the fault occurs
- 06
Requested service and previous repairs/software work
Clear scope
Drive software remains separate from safety systems.
This page does not infer work on load-moment limiters, brakes, steering, hoists, hydraulics or other safety-critical controllers. The requested system is defined before acceptance.
Technical and emissions requirements also apply to non-road machinery. Special applications are classified only after reviewing the machine, use, approval and legal framework; legality or a particular outcome is not guaranteed.
Frequently asked questions
Frequently asked questions: Construction and working machinery
Which construction machines can MG AutoTech assess?
Excavators, loaders, dumpers, dozers, graders, rollers, telehandlers and powered carriers can be submitted for engine ECU, software, diagnostics and aftertreatment. Feasibility is checked for each machine.
Is an rpm drop always a software problem?
No. Engine supply, turbo, sensors, cooling, hydraulic pump, valves, pressure control and driveline can all contribute. Engine and machine data must be evaluated together.
Why does a construction machine regenerate so often?
Long idle periods, low load, low exhaust temperature, high loading or implausible sensor and engine values are possible. Diagnosis considers the real duty cycle.
Can an AdBlue or SCR fault cause derating?
Yes. Depending on the system and detected fault, engine management can activate protection or power limits. Codes and measurements must confirm the cause.
Does MG AutoTech work on crane or load-moment controls?
Not under this offer. On a powered crane, the request concerns only the clearly identified engine/vehicle side. Hoist, load-moment limiter and safety controllers remain separate.
Can a working-machine ECU be cloned?
It can be assessed when the original unit, replacement, hardware, data access and condition are suitable. Complete readability and plug-and-play operation are not promised.
Can an off-road machine’s emissions system simply be changed?
No. “Off-road” is not automatic permission. The machine, emissions rules, approval and use must be assessed for the specific case.
Manufacturer and regulatory sources for context.These links explain system and operating boundaries. They do not replace diagnosis or a vehicle-specific approval assessment.
Excavators · loaders · dozers · working machinery