Comprehensive Engine Overhaul and Repair Specialists
Mining Support and Supply Specialists
Your equipment is only as strong as the engine that powers it. At Minerra, we specialize in complete engine overhaul, repair, and rebuild solutions that restore performance, reliability, and efficiency to heavy-duty machinery across Africa.
From mining and construction to power generation and industrial plants, we help you get the most out of your investment , minimizing downtime, extending asset lifespan, and ensuring consistent output.
With operations in South Africa, Ghana, Zimbabwe, and the DRC, our highly skilled technicians combine OEM-certified expertise, advanced diagnostics, and global service standards to bring your engines and equipment back to life.
Minerra Service Guarantee
What We Do
At Minerra, our Engine Overhaul Division covers every aspect of heavy equipment restoration , from full machine rebuilds to precision component repair and performance optimization.
Our goal is simple: to keep your fleet productive, your power systems reliable, and your engines performing like new.
Machine Rebuilds
Restoring Heavy Equipment to OEM or Better Standards
When your machinery starts losing performance, replacement isn’t always the best option. Minerra’s machine rebuild program restores your existing assets to their original factory condition , or better.
Our certified technicians perform complete disassembly, inspection, repair, and reassembly using genuine OEM parts and precision calibration tools.
Our rebuild services cover:
- Structural inspections and frame reconditioning for loaders, graders, and haul trucks.
- Hydraulic, transmission, and engine rebuilds using OEM-tested procedures.
- Wiring, hoses, and control system replacements for safety and reliability.
- Calibration and testing to meet manufacturer performance benchmarks.
- Full documentation and certification for complete quality traceability.
By rebuilding instead of replacing, our clients cut costs, reduce downtime, and maintain long-term operational efficiency.
Machine Component Repairs and Rebuilds
Precision Repair for Critical Components
Not every job needs a full rebuild. Minerra offers component-level repair and reconditioning for key systems including hydraulic assemblies, engine parts, and drivetrain components.
Our workshops are fully equipped with machining, balancing, and diagnostic tools to restore each component to OEM specifications.
We specialize in:
- Hydraulic pumps, motors, and control valves.
- Cylinder heads, crankshafts, and camshafts.
- Gearboxes, torque converters, and final drives.
- Electronic modules, sensors, and control units.
Each component is rebuilt under strict tolerances and tested for pressure, load, and performance before delivery , ensuring reliability equal to brand-new OEM parts.
Power Systems
Reliable Power. Proven Performance.
Every successful operation depends on reliable power. Minerra delivers diagnostics, overhaul, and maintenance for diesel, hybrid, and industrial power systems across Africa’s toughest environments.
Our engineers service both mobile and stationary units, keeping your energy infrastructure dependable and compliant.
Our Power Systems support includes:
- Generator and alternator overhaul for mining and industrial power.
- Fuel system tuning and ECU calibration for energy efficiency.
- Load testing and power module integration to verify output.
- Preventative maintenance schedules that minimize downtime.
Each project is backed by certified testing, OEM-grade components, and energy optimization consulting to reduce your operating costs.
Engine Overhaul
Complete Engine Restoration for Heavy-Duty Equipment
When your engine begins to underperform, Minerra’s engine overhaul service brings it back to peak condition. We conduct complete disassembly, cleaning, machining, and reassembly , ensuring every component meets OEM standards.
Our technicians work on leading engine brands such as Caterpillar, Komatsu, Volvo, Cummins, and Deutz, using certified replacement parts and precision testing methods.
Our overhaul process includes:
- 1. Diagnostic Testing – Identifying root causes of power loss or inefficiency.
- 2. Teardown and Cleaning – Thorough cleaning and inspection of all major components.
- 3. Machining and Replacement – Rebuilding with OEM-approved parts, bearings, and gaskets.
- 4. Reassembly and Calibration – Exact reassembly using factory torque and clearance data.
- 5. Performance Testing – Dyno testing for power, fuel economy, and emissions.
We restore every engine to OEM performance levels or higher, ensuring durability, compliance, and peace of mind.
Turbo Engine Repairs
Restoring Power, Boost, and Efficiency
Your turbocharger plays a vital role in maximizing engine performance. Minerra offers specialized turbo inspection, repair, and rebalancing services that restore power and prevent costly failures.
We handle both on-site repairs and workshop rebuilds, depending on the condition and application.
Our turbo services include:
- Our turbo services include:
- Replacement of bearings, seals, and impellers with OEM kits.
- Balancing and alignment for optimal performance and pressure consistency.
- Testing and calibration to restore safe, efficient boost levels.
A properly rebuilt turbo reduces emissions, increases engine response, and improves fuel efficiency , extending both turbo and engine life.
Why Choose Minerra for Engine Overhaul and Repair
OEM-Certified Quality
Every service is performed with genuine OEM components and certified processes that guarantee performance and reliability.
Expert Technicians
Our skilled engineers and mechanics bring decades of hands-on experience in mining, construction, and industrial engine systems.
End-to-End Solutions
From initial diagnostics to full overhaul, rebuild, and testing, Minerra provides complete lifecycle support for every machine.
Africa-Wide Reach
With dedicated service hubs in South Africa, Ghana, Zimbabwe, and the DRC, we provide fast response and local expertise across the continent.
What We Do for Our Clients
At Minerra, we understand that equipment reliability isn’t just about parts , it’s about trust, uptime, and performance.
That’s why we go beyond simple repairs. We partner with you to keep your engines, machines, and power systems working at their best, day after day.
Our process starts with detailed inspection and diagnostics, followed by precision repairs, rebuilds, and calibration , all done using OEM-approved components. But it doesn’t end there. We stay involved through preventative maintenance programs, technical support, and on-site servicing designed to extend machine life and reduce costly breakdowns.
Whether you run a mine, a construction site, or an industrial facility, Minerra gives you more than just service , we deliver confidence.
- Let’s Build a Solution for Your Mine
Africa-Wide Coverage
Our footprint extends across Africa, ensuring that no matter where you operate, Minerra is always within reach.
South Africa
Congo DRC
Ghana
Zimbabwe
We Don’t Just Fix Machines , We Keep Businesses Moving.
Let’s discuss how Minerra can help you achieve lasting performance and peace of mind.