Engine Overhauls

Overhaul Services – Scope of Work

At Nozzle Marine Engineering Services LLC, we specialize in complete marine engine overhauls to ensure optimal performance, extended service life, and compliance with OEM and class society standards. Our overhaul process follows a strict, step-by-step approach led by certified engineers and technicians — available both in-house and onboard.

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Dismantling & Inspection

We begin every overhaul with the systematic dismantling of the engine and its components. Our experienced technicians perform a detailed visual and technical inspection to identify wear, damage, and operational issues. Each component is measured and assessed for further reconditioning or replacement, ensuring no fault goes unnoticed.

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Reconditioning of Engine Components

Once inspected, all reusable components undergo professional reconditioning. This includes cleaning, polishing, machining, and surface treatments where required. Our reconditioning process restores key engine parts to OEM standards, ensuring durability and cost-effectiveness without compromising performance.

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Cylinder Head, Liner, Piston & Crankshaft Overhaul

These are critical components in your engine’s performance and reliability. We carry out full overhauls of cylinder heads, liners, pistons, and crankshafts, including:

  • Valve and seat refacing

  • Liner honing or replacement

  • Piston ring renewal

  • Crankshaft journal polishing and alignment checks

Each component is reassembled to exact tolerances for smooth engine operation.

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Fuel Injection System Testing

Accurate fuel delivery is essential for engine efficiency and emission control. Our team conducts fuel injector calibration and testing to verify spray patterns, injection pressure, and flow rates. We also inspect and clean fuel pumps, nozzles, and high-pressure lines to restore precise fuel delivery and optimal combustion.

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Reassembly & Commissioning

After all components are reconditioned and verified, we carry out precision reassembly of the engine. Our technicians follow OEM guidelines and torque specifications during reassembly. Commissioning includes:

  • Alignment and clearance checks

  • Engine test runs

  • Vibration, oil pressure, and temperature monitoring

  • Final performance verification

This ensures your engine is ready for full-duty operation upon completion.

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Workshop & Onsite Support Available

We offer flexibility through our fully equipped Dubai workshop and mobile service units for onsite repairs. Whether your vessel is docked or offshore, our team can deliver complete overhaul services with the same level of care and compliance—reducing downtime and avoiding costly transport.

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Why Choose Our Overhaul Services?

  • Certified & Experienced Technicians
    Our team is trained and certified to overhaul engines in compliance with OEM and class society requirements.

  • Complete Scope of Overhaul
    From dismantling to reassembly, we cover the full overhaul process with precision.

  • Workshop & Onboard Flexibility
    Services available at our fully equipped Dubai workshop or directly onboard your vessel.

  • Engine Brand Expertise
    Hands-on experience with MAN, Wartsila, Yanmar, Daihatsu, Cummins, Niigata, Bergen, and Hyundai.

  • Fast Turnaround & 24/7 Availability
    We reduce downtime with round-the-clock support and rapid response teams across UAE ports.

From planned maintenance to urgent troubleshooting, Nozzle Marine Engineering Services LLC is your trusted marine engineering partner in the UAE and beyond.

Need Overhaul Support Now?

We’re available 24/7 across all UAE ports.