Engine Liebherr D834 A7

Liebherr D834 A7 engine after overhaul – ready-to-install unit

We offer a fully refurbished Liebherr D834 A7 engine after a complete overhaul, prepared as a complete power unit for immediate installation or adaptation to a specific machine. This offer is intended for users who know exactly which engine they need and expect repeatable performance parameters while keeping downtime to a minimum.

Scope of overhaul work

• Comprehensive engine block overhaul – replacement of pistons, liners, rings, bearings, seals and auxiliary components with new or factory-refurbished parts.
• Fuel injection system – injectors and fuel pump inspected, overhauled or replaced and calibrated to Liebherr D834 A7 engine specifications.
• Cylinder heads – reconditioning of seats, replacement of valves and guides, leak testing and matching to the new parts.
• Crankshaft – measurement, grinding, balancing and assembly with new bearings, with verification of operating clearances.
• Engine auxiliary equipment – tested turbocharger, pumps, cooling system and filtration based on available high-quality replacement parts.

Dynamometer testing

Every overhauled Liebherr D834 A7 engine is started and loaded on an engine dynamometer. Dynamometer tests make it possible to confirm power output, torque and the stability of temperatures and pressures. On the customer’s request we provide a dynamometer test report documenting the course of the test.

Applications in machines

The Liebherr D834 A7 engine can be used as:

• engine for an excavator, crawler or wheeled,
• engine for a dump truck,
• engine for a Liebherr wheel loader,
• engine for an industrial or specialist machine.

It is possible to adapt the engine to a specific model – adjusting the timing case, additional hydraulic pumps, brackets and auxiliary equipment so that installation in the machine is possible without any modification of its structure.

Why choose a ready overhauled engine?

• Time savings – the overhauled engine is available as a complete unit, with no need to wait for your old engine to be repaired.
• Cost control – fixed, known price of the unit with no unexpected surcharges for additional parts.
• Risk reduction – performance parameters confirmed on a dynamometer; the overhauled engine is prepared for operation under full load.
• Configuration flexibility – possibility to transfer selected auxiliary equipment from the old engine, where technically justified.

Liebherr service, repair and diagnostics

In addition to supplying the complete engine unit, we offer service for Liebherr engines: on-site engine repairs at the customer’s location or in our workshop, complete overhaul, ongoing repairs and computer and measurement diagnostics. We provide construction machinery service with call-out – our mobile service enables fault verification, first start-up of the engine after installation and selection of suitable consumable parts.

Warranty, availability and logistics

The Liebherr D834 A7 engine after complete overhaul is covered by a warranty, provided that the manufacturer’s recommendations are followed, proper service procedures are applied and regular inspections are carried out. We serve customers from regions including Kraków, Małopolska, Podhale as well as the rest of the country. Shipping is available and, if necessary, we can also arrange international transport.

FAQ – frequently asked questions

• Does the Liebherr D834 A7 engine have full power after overhaul?
  Yes, every overhauled engine is tested on a dynamometer, and the results confirm that the assumed power and torque parameters are achieved.
• Can I reuse some of the auxiliary equipment from my old engine?
  In many cases it is possible to reuse existing auxiliary equipment. Based on the old unit we select a configuration so that installation in the machine is trouble-free.
• What are the warranty conditions?
  The warranty is valid when the correct oils, filters and service intervals are used and maintenance is carried out. Details are agreed individually before purchasing the engine.
• Do you offer an overhaul of my existing Liebherr engine only?
  Yes, we also offer engine refurbishment of the customer’s own unit. We carry out disassembly, diagnostics, cost estimation of parts and scope of work, and then the overhaul with dynamometer testing.

Contact us

If you are interested in a ready overhauled Liebherr D834 A7 engine or would like to obtain a quote for an overhaul of your own unit, please contact us. We will select the configuration, propose an appropriate scope of repair, choose the parts and define the commissioning procedure together with service support.

Liebherr engines – brand characteristics

Liebherr is a manufacturer of construction machinery and combustion engines, present in many market segments – from excavators and loaders, through cranes, to industrial and specialist machines. Liebherr engines are designed for operation in harsh conditions, with an emphasis on durability, stable performance parameters and straightforward service procedures.

Modern Liebherr engines use solutions that reduce fuel consumption and exhaust emissions while at the same time maintaining high torque at low engine speeds. Thanks to this, the engines perform very well in working machines that require long-term operation under load.

An advantage of the brand is the availability of spare parts and an extensive service network. For the user this means predictable operating costs, the possibility of quick engine repair or its refurbishment and short machine downtime.