Engine Cummins QSB5.9

Cummins QSB5.9 engine after overhaul – ready-to-install unit

We offer a fully remanufactured Cummins QSB5.9 engine, prepared for immediate installation or adaptation to a specific machine. An engine after a complete overhaul is a real alternative to a new unit – while maintaining durability, power and reliability in heavy-duty operation.

Scope of work – Cummins QSB5.9 engine overhaul

• Complete block overhaul – new liners, pistons, rings, bearings, inspection and reconditioning of the crankshaft.
• Cylinder head fully reconditioned – refurbishment of seats, guides, valves, and leak testing.
• Fuel injection system – injectors and pump tested, overhauled or replaced, set to Cummins specifications.
• Lubrication and cooling system – new oil pump, water pump, seals, and inspection of the oil cooler.
• Dyno test – every engine is tested on a load dyno, with parameters recorded for service documentation.

Applications – engine for excavator, dump truck, loader

The Cummins QSB5.9 engine is commonly used in construction and industrial machinery as:

• an engine for crawler or wheeled excavator,
• an engine for an articulated dump truck,
• an engine for wheel loader or telehandler,
• an engine for stationary machinery (pumps, generators, crushers, screens).

If required, we adapt the engine to your specific machine – based on the old unit we match the timing case, additional pumps and accessory mountings.

Why choose a repaired and overhauled engine?

• Reliability – an engine after repair and complete overhaul is fully tested on the dyno, with parameters close to the factory values.
• Available off the shelf – a ready-to-install unit reduces machine downtime to a minimum.
• Flexible configuration – matching accessories, harnesses, manifolds and control system to the specific application.
• Economy – compared to a new Cummins engine, the cost of overhauling and remanufacturing the unit is significantly lower.

Service, repair and diagnostics – Kraków, Małopolska, Podhale

We provide construction machinery service, Cummins QSB5.9 engine repair and full diagnostics at our workshop in Kojszówka (Małopolska) as well as in the field – with our mobile service we also travel to other regions of Poland.

We offer:

• engine diagnostics on the machine and on the workshop test stand,
• measurement of engine parameters on the dyno after overhaul or repair,
• supply of parts and Cummins components (genuine and high-quality replacement parts),
• assistance in selecting a replacement engine and in remanufacturing the customer’s original engine.

Warranty and availability

The overhauled engine is covered by a 12-month workshop warranty, subject to correct operation and scheduled maintenance.

Current availability of Cummins QSB5.9 units and installation lead time can be confirmed by phone or e-mail.

FAQ – frequently asked questions

• Does the overhauled Cummins QSB5.9 engine deliver full power?
  Yes, after the overhaul each unit is tested on the dyno. Based on the results we adjust the injection system and turbocharging to achieve parameters close to the factory settings.
• Can you transfer the accessories from the old engine?
  Yes, as part of the repair and adaptation we transfer the accessories (hydraulic pumps, alternators, compressors, pulleys) and adjust the configuration to the machine.
• What does service look like after the engine is installed?
  We provide service support – from initial start-up, through post-overhaul inspections, to later repairs and supply of consumable parts.
• Do you only carry out full overhauls, or also partial engine repairs?
  We perform both complete engine remanufacturing and partial repairs (sealing, cylinder head, injection system) following prior diagnostics.

Cummins engines – an American brand in construction and industrial machinery

Cummins is one of the most recognizable manufacturers of diesel engines in the world. For many years the brand’s units have been working in excavators, loaders, dump trucks, crushers, generators and agricultural machinery of many manufacturers.

Cummins engines are known for their robust design, good availability of spare parts and a wide range of power ratings and configurations. This makes it easy to choose the right model – whether as an engine for an excavator, loader or a stationary machine.

A remanufactured Cummins QSB5.9 engine is a sensible choice for users who expect a clear result: a fully operational machine, minimal downtime and a reliable power reserve without having to purchase a brand-new power unit.