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Professional repair of excavators, loaders, rollers, and dumpers
JCB Service
Has your JCB equipment lost power, does the boom raise slowly, or is it struggling with a hydraulic or gearbox failure? At WIBAKO, we effectively repair popular JCB 3CX and 4CX backhoe loaders, Loadall telescopic handlers, and JS series excavators. We eliminate faults in hydraulic pumps, JCB EcoMAX or Perkins engines, and Powershift gearboxes. We offer mobile diagnostics on site and component reconditioning in our workshop, quickly returning your machine to work.
When is it time for service?
Symptoms of engine failure in JCB machinery
Ignoring the first symptoms of engine wear is the easiest way to cause a serious and costly breakdown that can completely immobilize the equipment on the construction site.
Here are key warning signals indicating the need for diagnostics or an overhaul:
Change in exhaust color and intensity - dense black smoke under load usually portends Common Rail injection system or turbocharger failure, while blue smoke signals engine oil burning.
Noticeable drop in power and performance - a situation where your JCB 3CX with EcoMAX engine weakens while digging, RPM drops drastically during boom movements, and the machine loses momentum.
Engine starting problems - difficulty starting the engine both cold and after heating up significantly during operation.
Uneven engine operation and unusual noises - idling fluctuations, loud injector operation, or metallic knocking coming from the engine compartment.
Excessive crankcase pressure - blow-by (smoke from breather or oil filler cap), indicating wear of piston rings and cylinder walls.
Rapid loss of operating fluids - excessive engine oil consumption or regular drop in coolant level.
Quick reaction to these symptoms allows precise localization of the problem source in our workshop and prevents increased potential repair costs.
No more smoking and power drops
Specialized team for internal combustion engines
When the engine in your JCB starts smoking heavily, sharply losing power under load, or consuming excessive amounts of oil, temporary fixes are not enough. At WIBAKO, we focus on uncompromising quality - our specialized team of mechanics carries out advanced, major overhauls of engines dedicated to machinery of this brand. We have many years of experience in rebuilding JCB EcoMAX, JCB Dieselmax, and Perkins units (e.g., 1104 or 404 series).
With the utmost scrupulousness, we restore the original technical parameters, ensuring perfect fitting of the mechanical engine block components and precise tuning of the fuel systems. Every engine delivered from a JCB machine is disassembled into individual parts and thoroughly cleaned. Then, engineers perform specialized micro-measurements, locating even the smallest deviations from standard specifications. As part of a comprehensive overhaul, we carry out complete mechanical processing of components, replace worn internal parts with new ones, and precisely set the parameters of the timing and injection systems. Your JCB engine gains a second life, guaranteeing stable and failure-free operation on site.
We simulate construction site conditions in our workshop
Professional load testing - engine dynamometer
At WIBAKO, we eliminate the risk of surprises by operating our own engine dynamometer for testing complete combustion engines up to 500 HP. We check parameters under full operating load, guaranteeing failure-free and stable engine operation.
In our service center in Kojszówka, we do not install engines "blindly". Every unit driving JCB 3CX/4CX backhoe loaders or Loadall telescopic handlers (e.g., 535-95) undergoes rigorous load tests that simulate extreme field working conditions. We load JCB or Perkins units exactly as if they were working with a fully loaded hydraulic pump during deep excavations. During the controlled break-in cycle, we monitor oil pressure, the cooling system, and injection system parameters in real time. You receive a fully broken-in, verified engine along with a technical report confirming the return to nominal factory parameters.
When to react?
Symptoms of hydraulic system failure in JCB machines
Even a minor drop in piston pump efficiency, a leak in the control valve, or clutch wear in a Powershift transmission can drastically reduce overall machine efficiency and expose you to costly delays.
Here are the most common symptoms indicating that the hydraulics or drivetrain in your JCB require specialist intervention:
Slowing down of working movements after warming up – if the backhoe loader works efficiently in the morning and after a few dozen minutes (when the oil reaches high temperature) begins to slow down drastically, this is a classic symptom of internal seal loss in the main pump or control valve.
Noticeable lack of power under load – the machine cannot fill a full bucket, struggles with steering or climbing slopes efficiently.
Weakening of individual functions – delayed response to joystick movement, slow telescope extension in Loadall handlers, or boom dropping.
Jerking when changing travel direction – issues with smooth forward/reverse movement, slipping gears in Powershift transmission, or noise from drive axles.
Unnaturally loud hydraulic operation – characteristic loud whining or grinding near the hydraulic pump, signaling pump seizure or air in the system.
Rapid overheating of oil – hydraulic oil temperature rises quickly above normal, destroying seals as a result of internal leaks.
Metal shavings in filters – particles in the hydraulic or transmission filter are the final warning sign before total system failure.
Our team of experts knows how to restore performance to your machine
Specialized team for hydraulics and drivetrains
Does your JCB raise its arm slowly, lose power when oil gets hot, or have trouble changing gears smoothly? Our dedicated hydraulic team specializes in reconditioning Parker and Rexroth piston pumps, hydraulic motors, control valves, as well as gearboxes and axles installed in JCB machines.
In our workshop in Kojszówka, we precisely recondition main pumps fitted, among others, in iconic JCB 3CX and 4CX backhoe loaders or JS220 crawler excavators. Instead of expensive replacement with new components, we replace rotary groups, control plates, and pistons, restoring full efficiency to the system. We flawlessly eliminate the root causes of jerking, boom dropping, or slow joystick response. We also repair Powershift and Syncroshuttle transmissions. Every reconditioned component undergoes rigorous load testing, ensuring your JCB regains factory strength and operational smoothness.
When to react?
Symptoms of hydraulic system failure in JCB machines
Even a minor drop in piston pump efficiency, a leak in the control valve, or clutch wear in a Powershift transmission can drastically reduce overall machine efficiency and expose you to costly delays.
Here are the most common symptoms indicating that the hydraulics or drivetrain in your JCB require specialist intervention:
Slowing down of working movements after warming up – if the backhoe loader works efficiently in the morning and after a few dozen minutes (when the oil reaches high temperature) begins to slow down drastically, this is a classic symptom of internal seal loss in the main pump or control valve.
Noticeable lack of power under load – the machine cannot fill a full bucket, struggles with steering or climbing slopes efficiently.
Weakening of individual functions – delayed response to joystick movement, slow telescope extension in Loadall handlers, or boom dropping.
Jerking when changing travel direction – issues with smooth forward/reverse movement, slipping gears in Powershift transmission, or noise from drive axles.
Unnaturally loud hydraulic operation – characteristic loud whining or grinding near the hydraulic pump, signaling pump seizure or air in the system.
Rapid overheating of oil – hydraulic oil temperature rises quickly above normal, destroying seals as a result of internal leaks.
Metal shavings in filters – particles in the hydraulic or transmission filter are the final warning sign before total system failure.
Testing on our dynamometer guarantees that the machine will not fail
Professional hydraulic dynamometer - component testing and verification
We don't guess which part is damaged - we have professional diagnostic test benches (hydraulic dynamometer) for verifying and testing pumps and hydraulic components. Every unit undergoes rigorous load tests before going back to the machine.
On our specialized dynamometer, we mount main pumps from JCB machines, simulating extreme working conditions and high oil temperatures reaching up to 70°C. We test the response of pressure regulators and the stability of operating parameters. Every piston pump, travel motor, or control valve leaves the WIBAKO workshop with a complete technical report. As a result, you get 100% certainty that your JCB's hydraulic system has restored factory performance, and the risk of another site downtime is completely eliminated.
We minimize downtime
Fast mobile service - JCB repair on the construction site
We know well that transporting construction equipment to a stationary workshop generates high costs and unnecessary delays. That is why our mobile mechanics go directly to the job site to diagnose and fix the fault where the equipment works, anywhere in Poland. We travel to cities such as Poznań, Warsaw, Gdańsk, Kraków, Lublin, Szczecin, Wrocław, Katowice, Białystok, or Łódź.
WIBAKO service vehicles are equipped with professional measuring equipment, allowing us to quickly verify pressures in the hydraulic system and perform diagnostics on the engine and electronics. Many typical faults - such as cylinder leaks, control valve breakdowns, valve issues, or minor electronics failures - are fixed on the spot. If a fault requires deeper intervention, we efficiently disassemble the damaged component (e.g. pump, engine, or gearbox) and transport it to our base in Kojszówka, where it undergoes full reconditioning and testing.
Overview of services and serviced JCB models - SEO Summary
| Equipment Category | Representative JCB Models | Typical Faults and Symptoms | Scope of Repair at WIBAKO |
| Backhoe Loaders | JCB 3CX, 4CX, 5CX | Loss of lifting power, Parker pump faults, Powershift transmission slipping, Dieselmax/EcoMAX engine smoking | Reconditioning of hydraulic pumps, major engine and transmission overhauls, removing boom play |
| Telescopic Handlers (Loadall) | JCB 535-95, 540-170, 531-70 | Drop in hydraulic power after warming up, leaks from telescope extension cylinders, 4x4 drive faults | Sealing and reconditioning of hydraulic cylinders, repair of piston pumps, service of drive axles and transmissions |
| Crawler and Wheeled Excavators | JCB JS130, JS220, Hydradig 110W | Drop in swing system efficiency, travel motor seizure, injection system failure | Pump dynamometer tests, reconditioning of final drives and travel motors, comprehensive hydraulics service |
| Mini Excavators | JCB 19C-1, 8025 ZTS, 8035 | Leaks from gear pumps, cold starting difficulties on Perkins/Kubota engines, weak slewing | Repair and adjustment of main pumps, combustion engine reconditioning, control valve sealing |
Everything for your JCB in one place
Instant access to parts - WIBAKO's own warehouse
At WIBAKO, we eliminate long delivery wait times by operating our own well-stocked warehouse of new, used, and reconditioned components available off the shelf. When a repair request is received, the required parts are picked immediately from the shelf, and when heading out into the field with our mobile service, we bring along precisely selected spare parts to fix the fault in a single visit.
Put your machine in the hands of professionals
JCB machine models and types we service and recondition
Thanks to rich experience and access to advanced diagnostic tools, we effectively assist owners of both older, proven JCB machine generations and modern models packed with electronics. Before starting work, we always reliably assess the technical condition of the equipment to propose the most cost-effective repair scope.
We serve the full catalog of JCB machines:
JCB Backhoe Loaders: We service flagship and most widespread models, including JCB 3CX, 4CX, and 5CX, as well as smaller compact versions.
JCB Loadall Telescopic Handlers: We comprehensively repair handlers popular in construction and agriculture, e.g., JCB 531-70, 535-95, 540-140, and 540-170.
JCB Crawler and Wheeled Excavators: We specialize in reconditioning hydraulics and engines for JS series machines (e.g., JS130, JS220) and innovative Hydradig series models.
JCB Mini and Midi Excavators: We provide quick diagnostics and repairs for smaller equipment, such as JCB 19C-1, 8018, 8025 ZTS, or 8035.
JCB Wheel Loaders: We service drive and hydraulic systems in articulated loaders (e.g., JCB 403, 409, 427).
Which JCB machine models most frequently come to your service center?
We most often service the iconic JCB 3CX and 4CX backhoe loaders, Loadall series telescopic handlers (e.g., 535-95, 540-170, 531-70), as well as JS220 / JS130 crawler excavators and popular mini excavators such as the JCB 19C-1 or 8025 ZTS.
How long does the remanufacturing of a hydraulic component or engine take?
Turnaround time depends on the extent of the damage and parts availability. However, thanks to our well-stocked inventory of components (new, used, and remanufactured), we complete most standard remanufacturing jobs as quickly as possible, minimizing costly downtime for your machine on the job site.
Do you repair JCB machines directly on the construction site?
Yes. We operate a mobile service unit whose vehicles are equipped with specialized measuring and diagnostic equipment. On-site, we perform hydraulic pressure diagnostics, fix leaks, repair solenoid valve issues, and fix minor engine faults. If an issue requires workshop repair (such as a complete engine overhaul or pump remanufacturing), we disassemble the component and bring it back to our main facility in Kojszówka.
