Service and repair of Volvo machinery

Experts in Volvo machinery - in the workshop and in the field

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Maximum operational availability of your equipment

Service of Volvo construction machinery

Professional service of Volvo machinery at Wibako is a guarantee of rapid restoration of your construction equipment's full operational efficiency and the elimination of costly downtime on the construction site. We specialize in advanced diagnostics, repair, and regeneration of key components in crawler and wheeled excavators (EC, ECR, EW series), wheel loaders (L series), and articulated haulers (A series) from the Swedish manufacturer. Having a powerful technical base in the form of our own specialized fleet of vehicles and one of the largest warehouses of ready-to-use components in Poland, we are able to deliver and install necessary power hydraulics or drivetrain elements significantly faster than traditional repair shops. We understand that every hour of downtime of a Volvo A30 hauler or an EC220 excavator generates real financial losses, which is why at Wibako we eliminate this problem through immediate access to remanufactured Rexroth hydraulic pumps, swing motors, final drives, and complete Volvo D6, D8, or D11 power units. Our team of mechanics relies on precise technical verification procedures, which, combined with a secure purchasing process and a full warranty on completed services, gives you absolute confidence in reliability under the toughest working conditions. Choosing Wibako service means opting for uncompromising quality, authentic engineering support, and a partner who secures the continuity of your business without unnecessary waiting.

30 years of industry experience

Expert service of Volvo internal combustion engines

Volvo internal combustion engine service at Wibako is a team of experienced engineers and mechanics who daily restore full factory power and efficiency to power units operating in the most demanding construction and mining conditions. We specialize in comprehensive major overhauls and precise diagnostics of Common Rail injection systems and unit injectors in engines such as Volvo D4, D6, D8, D11, D13, and D16, installed in Volvo L150H wheel loaders or EC300E excavators. Thanks to a deep understanding of the design specifics of the Swedish manufacturer, including EMS engine management systems, our team can precisely eliminate issues with excessive oil consumption, loss of compression, or improper fuel combustion that directly threaten the machine's continuity of operation. Having our own giant warehouse stock at Wibako means that repairing a Volvo D11H or D6J engine does not involve weeks of waiting for parts; we have original and proven piston-crank assembly elements, bearings, seal kits, and turbochargers available off the shelf. This business model drastically shortens the downtime of your hauler or loader, providing you with a secure service purchase backed by solid technical parameters, a full warranty, and the assurance that the rebuilt unit will maintain optimal fuel consumption and nominal performance for thousands of operating hours to come.

 

 

Uncompromising load testing of Volvo units

Professional engine dynamometer

Verification of performance parameters on a professional engine dynamometer at the Wibako service center is a key step that gives you 100% confidence that the repaired Volvo engine meets strict factory standards and is fully ready to operate under maximum load. Every power unit – from compact Volvo D4 and D6 engines to powerful Volvo D13 and D16 motors installed in A40G haulers or heavy EC480E excavators – goes to a specialized test stand after assembly in our workshop. On the dynamometer, we precisely simulate real machine operating conditions on a construction site or in a mine, monitoring in real-time the power curve, torque, lubrication system pressure, coolant temperature, exhaust parameters, and Common Rail injection system performance under extreme loads. Thanks to this advanced technological process, we completely eliminate the risk of hidden assembly or material defects before the engine even goes back under the hood of your machine.

 

When does your machine need immediate support from service?

Symptoms of a damaged Volvo engine

Identifying the early symptoms of a Volvo internal combustion engine failure in EC250 crawler excavators, L120 loaders, or A25 haulers is crucial to prevent catastrophic engine seizure and enormous repair costs. The EMS control systems in Volvo machines often signal errors via codes on the dashboard; however, many mechanical and hydraulic damages in D4, D6, D8, or D11 series engines develop covertly during daily operation under load. Ignoring minor irregularities in the behavior of the piston-crank assembly, turbocharger, or Common Rail injection system leads directly to sudden machine downtime on the construction site.
If you notice any of the following symptoms in your Volvo machine, your power unit requires immediate diagnostic verification:


Sudden drop in power and lack of throttle response - especially visible under load in L-series loaders or during soil cutting by EC excavators, which most often heralds unit injector failure, wear of the variable geometry turbocharger, or loss of compression in the cylinders of Volvo D6 or D8 engines.


Unnatural exhaust smoke color - thick, black smoke indicates improper fuel combustion caused by damaged injectors or EGR exhaust gas recirculation system failure; blue smoke points to engine oil combustion (e.g., due to worn turbine seals or piston rings), while white smoke signals coolant entering the combustion chamber, which foretells a cracked cylinder head or damaged head gasket in Volvo D11/D13 engines.


Unstable, low engine oil pressure when the engine is warm – a critical symptom often accompanied by a warning message from the EMS system, indicating extreme wear of the main and connecting rod bearings or oil pump failure, which threatens immediate crankshaft seizure.


Metallic knocking, noise, and excessive vibrations from the engine compartment – loud knocking correlating with Volvo engine speed most often means clearance on piston pins, bearing damage, or timing system failure, which without immediate machine shutdown will lead to engine block puncture.


Excessive blow-by from the crankcase and fluid loss – intense smoking from the breather combined with rapid engine oil consumption or regular overheating of a Volvo D7/D10 power unit under load indicates worn cylinder liners and pistons, requiring a complete major overhaul in controlled workshop conditions.

Precise regeneration of Volvo pumps and control valves

Dedicated team for power hydraulics

We focus on restoring full flow efficiency and operating pressure in main piston pumps, swing motors, travel motors, and multi-section hydraulic control valves that manage arm kinematics in Volvo EC210, EC290 excavators, or EW160 wheeled excavators. We possess expert knowledge and specialized tooling necessary to service components from renowned brands collaborating with the Swedish manufacturer, including Bosch Rexroth, Kawasaki, and Parker units, eliminating annoying issues with slow attachment operation, drop in breakout force on the bucket, or hydraulic oil overheating. Because we understand that internal leakage of a control valve in a Volvo L180G loader can completely paralyze the operation of a concrete plant or mine, we base key service operations on immediate access to parts from our massive warehouse. The safety of purchasing at Wibako is built on eliminating any compromises - every remanufactured hydraulic pump or motor leaves our workshop only after passing rigorous tests, which guarantees full operational stability of the system and resistance to extreme pressure peaks during the heaviest earthworks.

 

Full load simulation and certification of Volvo components

Modern hydraulic test bench

Testing components on our advanced hydraulic test bench is the ultimate quality check, ensuring that every remanufactured piston pump, travel motor, or Volvo control valve reaches your machine in perfect condition. We have one of the most modern hydraulic test benches in the country, which allows for precise simulation of real, extreme operating conditions of high-pressure hydraulic systems used in machines of the Swedish manufacturer. On our test stand, we subject main pumps and swing motors installed in heavy Volvo EC380 crawler excavators or L220 loaders to load tests, monitoring parameters such as volumetric efficiency at maximum operating pressure, internal leakage, temperature stability, and the correct response of control valves and LS regulators. Thanks to such detailed computer verification on the Wibako test bench, we completely eliminate the risk of a component failing to hold pressure or showing performance drops after the hydraulic oil warms up to operating temperature once installed on a Volvo A35 or EC250 machine. For the client, this is uncompromising protection against repeated, costly equipment downtime on the construction site and assurance of a safe purchase. Every diagnostic run ends with the generation of an official report detailing the system's performance characteristics, which serves as solid technical evidence of the restoration of factory flow parameters and allows us to cover remanufactured Volvo hydraulics with a full warranty of reliability in the heaviest working cycles.

 

How to recognize a system failure?

Symptoms of damaged Volvo power hydraulics

Early detection of anomalies in the operation of the high-pressure hydraulic system in Volvo machines, such as EW180 wheeled excavators, EC300 crawler excavators, or L150 loaders, helps prevent complete destruction of the pumps and contamination of the entire system with metal shavings. Hydraulic systems based on advanced Load Sensing control are exceptionally precise, but wear and tear of valve plates, pistons, or seals drastically reduces the operational efficiency of the entire machine.
If you observe any of the following symptoms in your Volvo construction machine, the hydraulic system requires immediate verification:


Drastic drop in breakout force and slow operation of attachments after oil warms up – the machine loses dynamics and power, which directly indicates internal leaks and extreme wear of the piston-cylinder pair in the main Bosch Rexroth or Kawasaki hydraulic pump.


Unnatural, loud metallic noises, howling, and cavitation – characteristic sharp noise coming from the area of the main pump in a Volvo EC220 most often portends air in the system, bearing damage, cavitation caused by clogged filters, or critical mechanical wear of rotating elements, which threatens immediate seizure of the component.


Sharp increases in hydraulic oil temperature – overheating of the system and frequent CareTrack on-board computer alarms signal that oil is escaping through excessive clearances in the main control valve or pump, generating massive friction and destroying the structure of technical seals in the cylinders.


Uncontrolled dropping of the machine arm or boom – spontaneous lowering of the work attachments under load or lack of precision in joystick control indicates wear of the spools in the Volvo multi-section hydraulic control valve or damage to hydraulic locks and seals on the cylinder piston rods.


Jerky operation and lack of smooth movements during simultaneous operations – problems with simultaneous cab rotation and boom lifting in EC/EW series excavators point to control valve failure, damage to the swing motor, or incorrect operation of the pressure and flow regulator at the main pump.

 

Comprehensive repairs of Volvo machinery directly on your construction site

Lightning-fast Volvo mobile service

We have an extensive fleet of modern, fully equipped service vehicles designed as completely independent, mobile repair workshops ready for immediate action anywhere in Poland. Our field team, consisting of experienced diagnosticians and mechanics, arrives at your construction site or mine equipped with professional diagnostic computers to read error codes from Volvos EMS and V-ACT control systems, as well as precise flow meters and pressure gauges to test power hydraulics under full load. Thanks to such advanced equipment, we completely eliminate the chaotic trial and error method, instantly pinpointing the source of the fault in Volvo EC250 excavators, L150G wheel loaders, or A30 articulated haulers. At the breakdown site, we are able to perform not only routine maintenance or parameter calibration, but also advanced mechanical and hydraulic operations, such as dismantling a worn Rexroth main pump or a Volvo D8 combustion engine for subsequent remanufacturing at our facility, as well as the reassembly of the finished components. The reliability of choosing Wibakos mobile service lies in the fact that our mechanics head into the field backed directly by our massive spare parts warehouse. This drastically reduces the downtime and allows us to restore your Volvo machines optimal work cycle in the shortest possible time.

 

 

Lightning-fast shipping and immediate off-the-shelf availability

Giant Volvo spare parts warehouse

Wibako's massive, in-house warehouse facilities in Kojszówka are one of the greatest assets of our service, allowing us to reduce Volvo construction machinery repair times to an absolute minimum. We have thousands of spare part references, including brand-new OEM components, top-class aftermarket parts from renowned original equipment manufacturers such as Mahle, Bosch, Kolbenschmidt, or Bosch Rexroth, as well as fully remanufactured and tested elements sourced from dismantled machines of the Swedish manufacturer. We maintain constant availability of key assemblies for hydraulic power systems and drivetrains, including complete piston pumps, swing motors, final drives, control valves, gearboxes (including Volvo and ZF transmissions), as well as complete power unit repair kits, such as Kolbenschmidt main and connecting rod bearings, cylinder liners, pistons, or cylinder head gaskets dedicated to Volvo D5, D6, D7, D8, D11, and D13 engines. We base every price inquiry and part selection process at Wibako on precise equipment identification, where our technical advisors identify components directly by the engine serial number or the unique catalog number of the Volvo EC210, L120F, or A25 hauler, completely eliminating the risk of error and delivery of a mismatched component. The security of purchasing from our shop and service is guaranteed by the fact that every used or remanufactured part undergoes rigorous, multi-stage quality control under the supervision of our mechanics before leaving the warehouse, while our express logistics system enables the shipping of ready components within 24 hours of notification. By combining such a giant warehouse database with a professional remanufacturing workshop, we are not merely an intermediary, but an independent, stable technological partner that effectively safeguards the operational continuity of your Volvo fleet and protects your budget from losses caused by sudden breakdowns.

 

 

 

 

 

How do I choose the correct part for my Volvo excavator or loader to avoid making a mistake when purchasing?

All you need to do is contact our technical advisory department and provide us with the machine model and its unique serial number. For engine components, please also provide the engine serial number from the rating plate of your Volvo D6, D8, or D11 unit. Our experts use precise, professional part identification systems and manufacturer compatibility databases. This allows us to perfectly match hydraulic pumps, control valves, crank-piston components, or seals directly to the specific factory specifications of your machine, completely eliminating the risk of error.

Do you use original OEM Volvo parts or cheaper replacements during repairs and remanufacturing?

At Wibako, we always consult the choice of components directly with you, offering technical solutions optimized for both your budget and durability. Our permanent stock includes both original OEM Volvo parts and top-tier components from OEM suppliers (first-assembly manufacturers) such as Mahle, Kolbenschmidt, or Bosch.

Will I receive a warranty and proof of performance after the remanufacturing of a Volvo hydraulic pump or engine?

Yes, at Wibako, every remanufacturing process of key components we perform – from Bosch Rexroth piston pumps to Volvo D8 or D11 internal combustion engines – concludes with rigorous load tests on our specialized test benches and is covered by a full, written warranty.

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