Course on Overdrives in Heavy-Duty Vehicles
Online 300-hour course on overdrives in heavy-duty vehicles. 6 modules covering Regulation (EU) 2019/1242 (CO2 emissions from heavy-duty vehicles), Regulation (EU) 2017/2400 (VECTO certification) and VECTO. Assigned tutor and open enrolment.
Course on Overdrives in Heavy-Duty Vehicles — studying from South Africa
Mining, agriculture and construction make off-road and specialised machinery central to South Africa's economy. Mining equipment manufacturers and service providers support the country's extensive gold, platinum and coal operations, while agricultural machinery serves commercial farming. Engineers working on heavy vehicles and special machines focus on hydraulics, drivetrains and durability under harsh conditions. The South African Bureau of Standards and the Mine Health and Safety Council set relevant standards and safety requirements.
Fees for South Africa: R 12 000 (South African rand), with instalments and employer sponsorship available.
Relevant bodies in South Africa
Typical roles
Questions from South Africa
Will a SEIUM qualification be recognised by the professional bodies in South Africa for this area?
SEIUM qualifications are private and not accredited by any South African body. Engineering registration is handled by ECSA, and machinery safety standards are linked to SABS and the Department of Employment and Labour's regulations. Recognition of a private qualification is decided by employers or the relevant body, so confirm this with them before you enrol.
How might this qualification be used by employers in South Africa in off-road and special vehicles?
Mining, agriculture, construction and vehicle-conversion firms value practical machinery knowledge and proven problem-solving. A private qualification can support your application, especially with hands-on experience, but it carries no official status. Its weight depends on each employer, so ask potential employers in your field how they would view it.
Can I study this programme alongside full-time work from South Africa, and is there a time zone or language issue?
The programme is 100% online and in English, so you can study from home without a student visa. Master's programmes take 1,900 hours, postgraduate diplomas 800 hours and specialist courses 300 hours. Each student has an assigned technical tutor, fees can be paid in instalments, and employer sponsorship is possible. Check time-zone and workload expectations with SEIUM directly.
Take the controls.
Run a real engineering trade-off from this field. Move the sliders, watch the model react in real time and beat the challenge.
What you will be able to do
Explain the role of long gear ratios in heavy-duty vehicles.
Describe the components and operation of the overdrive.
Select transmission ratios according to the vehicle's mission.
Apply driving techniques to maximise efficiency.
Diagnose and maintain overdrive systems.
Evaluate repair costs and fuel savings.
Prepare a transmission specification study as a final project.
Who it's for
- Powertrain engineer for heavy-duty vehicles who wants to specialise in Overdrives in heavy-duty vehicles.
- Transmission technician who wants to specialise in Overdrives in heavy-duty vehicles.
- Fleet efficiency manager who wants to specialise in Overdrives in heavy-duty vehicles.
- Efficient driving trainer who wants to specialise in Overdrives in heavy-duty vehicles.
- Workshop manager for commercial vehicles who wants to specialise in Overdrives in heavy-duty vehicles.
- Vehicle specification technician who wants to specialise in Overdrives in heavy-duty vehicles.
- Engineering or science graduates looking to enter road transport.
What you'll work with
- Regulation (EU) 2019/1242 (CO2 emissions from heavy-duty vehicles)
- Regulation (EU) 2017/2400 (VECTO certification)
- Directive 96/53/EC (weights and dimensions of heavy-duty vehicles)
- SAE J1939 (CAN communications in heavy-duty vehicles)
- ISO 6336 (load capacity calculation of gears)
- API GL-5 (gear oils)
6 modules · 300 h
1.1What an overdrive ratio is and what it is for1.2Gearbox with integrated overdrive and auxiliary range unit1.3Architectures: main gearbox, splitter and rear range unit1.4Gear spacing and speed jumps1.5Relationship with the engine torque curve1.6Top speed and cruising speed1.7Consumption and economical engine speed1.8Applications: transport, construction and agriculture1.9Sector terminology1.10Workshop: gear spacing analysis of a vehicle
2.1Gear sets of the auxiliary range unit2.2Synchronisers and couplings2.3Pneumatic and electric actuation2.4Controls and shift logic2.5Lubrication of the assembly2.6Bearings and their load2.7Speed and position sensors2.8Protection against incorrect shifting2.9Interaction with the engine brake and retarder2.10Practical: tracing the power flow
3.1Adapting the final drive ratio to use3.2Effect of tyre size3.3Speed calculation per gear3.4Hill starts and the shortest ratio3.5Trade-off between starting and cruising3.6Adaptation in converted vehicles3.7Verification of the tachograph and speedometer3.8Approval of ratio changes3.9Documentation of the modification3.10Practical: calculating ratios for a specific use
4.1Shifting technique and use of torque4.2Efficient driving in heavy-duty vehicles4.3Use of overdrive on gradients4.4Optimal speed and green zone4.5Effect of weight and aerodynamics4.6Consumption data and its analysis4.7Driver training and results4.8Automatic shift systems and their tuning4.9Predictive cruise control4.10Practical: analysis of a driving log
5.1Unit oil and its specification5.2Change intervals and checks5.3Noise and vibration diagnosis5.4Engagement failure and its causes5.5Leaks and their repair5.6Synchroniser wear5.7Electrical and pneumatic diagnosis of the controls5.8Systematic diagnostic procedure5.9Recording interventions5.10Practical: guided diagnosis of three faults
6.1Disassembly and inspection of the unit6.2Criteria for replacing components6.3Clearances, preloads and adjustments6.4Assembly and commissioning6.5Repair versus exchange6.6Cost of the intervention and its justification6.7Spare parts and availability6.8Common maintenance errors6.9Trends in heavy-duty vehicle transmissions6.10Final project: maintenance plan and ratio adaptation
How you'll learn
Fully 100 % online training on the SEIUM campus, with downloadable material, recorded classes and an assigned technical tutor. There are no fixed timetables: students progress at their own pace within the enrolment period, which makes it possible to combine the programme with work.
Each module combines theory, guided reading of the original standard and applied exercises. The working software is VECTO, AVL CRUISE, MATLAB/Simulink, advanced Excel, in free, academic or evaluation versions. Tests are studied using real fuel consumption simulation procedures with different final drive ratios, gearbox diagnostics in the workshop and driving data analysis. Assessment is continuous by module, plus the final integrating project.
Build it end to end
Your final project follows the real engineering workflow, step by step, reviewed by your tutor.
Explain the role of long gear ratios in heavy-duty vehicles.
Describe the components and operation of the overdrive.
Select transmission ratios according to the vehicle's mission.
Apply driving techniques to maximise efficiency.
Diagnose and maintain overdrive systems.
Where this takes you
Requirements
- No prior qualification is required.
- Internet connection and a computer capable of running the programme's software.
- Sufficient Spanish to read technical regulations.
Ready to start?
Send your application today. Our admissions team replies within 72 hours with your study plan and funding options.
Frequently asked questions
The programme totals 300 hours spread over 3 to 5 months. That is an average of 10 to 15 hours a week, compatible with full-time work.
You work with VECTO, AVL CRUISE, MATLAB/Simulink and advanced Excel. Free, academic or evaluation versions are used, and the tutor indicates the free alternative where one exists.
A SEIUM diploma of your own upon passing the continuous assessment and the integrating project. It is in-house training, not an official qualification from the Ministry.
Yes. Modules passed in a Course or Postgraduate Diploma in the same area are recognised towards the higher programme. Check the recognition policy when you enrol.
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