Author: Wolfgang

Essential Checklist for Purchasing Used Scrap Handling Equipment

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Your Guide to Buying Used Material Handlers for Scrap Handling

Purchasing used construction machinery, especially material handlers for scrap handling, can be a smart financial move. However, ensuring you get a machine that’s reliable, efficient, and cost-effective requires careful inspection and consideration. A well-maintained used machine can serve your business for years, while a poor purchase could lead to frequent breakdowns and costly repairs. Here are some key factors to keep in mind when evaluating a used material handler.

Check the Service and Maintenance History

A machine’s service history is one of the most telling indicators of its condition. Well-documented maintenance records show that the previous owner cared for the machine, followed scheduled services, and addressed any issues promptly. Look for records detailing regular oil changes, hydraulic system maintenance, and any major repairs or replacements. A lack of service history could indicate neglect, which may lead to hidden problems down the line.

Sennebogen used material handler excavatro S 830E
Ekskavator për trajtimin e materialeve

Assess the Structural Integrity

Material handlers operate in tough environments, often handling heavy and irregular loads. Inspect the structural components carefully—particularly the boom, stick, and undercarriage—for signs of excessive wear, cracks, or welding repairs. Pay special attention to pin and bushing wear, as excessive play in these areas can indicate structural weakness and the need for costly repairs.

Examine the Hydraulic System

The hydraulic system is the heart of a material handler, enabling smooth operation and precise control. Look for leaks in the hoses, cylinders, and pump connections. Check the hydraulic fluid for contamination—milky or discoloured fluid may suggest internal issues, such as water infiltration or metal shavings from component wear. A test run should reveal whether the hydraulics operate smoothly without jerky movements or delays. Experienced inspection companies can run a so-called Oil Sampling with a certified lab to examine the containments for unusual wear in components.

Evaluate the Engine Condition

A well-functioning engine is critical for performance and efficiency. Start the machine and listen for any irregular noises such as knocking, excessive rattling, or hissing sounds. Watch for excessive smoke, which can indicate fuel system problems or worn engine components. Low power output or slow acceleration can be warning signs of deeper issues. Additionally, check for any oil or fuel traces in coolant and for coolant in oil. A too high oil level in engine sump can be a hint for problems.

Inspect the Tires or Tracks

The undercarriage is often one of the most expensive components to repair on heavy machinery. If the machine has tracks, look for wear on the sprockets, rollers, and track links. If it has tires, ensure they have sufficient tread depth and no major damage.

Test the Electrical and Control Systems

Test the electrical system to ensure that all lights, gauges, and switches are working properly. Any flickering displays or non-responsive controls may signal wiring or sensor malfunctions, which can be expensive to diagnose and fix. If a generator is fitted it should be checked for functionality.

Consider the Attachments and Accessories

Many material handlers come with specialized attachments, such as grapples, magnets, or shears. Ensure that any included attachments are compatible with the machine and in good working condition. Hydraulic quick couplers should operate smoothly, and hoses should be free from leaks or excessive damage. It is always recommended to check a material handler with the tool attached.

Run a Test Operation

Whenever possible, operate the machine under real working conditions. Test the boom and stick movements, rotation, and lifting capacity. The controls should be responsive, with no delays or hesitations. Pay attention to unusual vibrations or noises, as these could indicate hidden mechanical issues. Do not forget to check the hydraulic cab raiser and try several full 360° swing operations including the swing brake test.

Final Thoughts

Buying a used material handler for scrap handling can be a cost-effective solution if approached with diligence. A thorough inspection and careful evaluation of the machine’s condition, combined with verifying its service history and legal documentation, can help you make a smart investment. If you’re unsure about any aspect of the inspection, consider working with a professional machinery inspection service such as MEVAS to ensure you get the best value for your money. Consider investing some money in a professional inspection to avoid buying a machine with hidden problems.

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Recommend Mevas-Inspection Services

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We pay a commission for a successful lead

Do you know people in the construction industry? Leverage your connections and earn commissions by recommending our five-star heavy machinery inspection services! We help buyers in 25+ countries make smart purchases with expert pre-purchase inspections.

Just spread the word, help your contacts make informed decisions, and get paid for every referral. It’s that simple! 💰

Basic term: Your contact is not yet an existing customer of Mevas

Map of Mevas inspector network

How does it work to earn a commission?

  • Talk to your contacts about our pre-purchase inspections
  • Send us the name of the person/company that is interested
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  • After they ordered and paid an inspection you will earn a commission

(Invoice or bill is required from you with banking details)

What commission do we pay?

  • Standard Earthmoving machinery, first lead: 200$
  • Road trucks, concrete pumps, tractors: 160$
  • Each additional inspection ordered by your customer / friend with your help: 50$
  • Caterpillar TA1-Plus inspection including oil analysis: 250$
  • Crane inspection (mobile or crawler cranes above 60 to capacity) 250$

Extending the Life of Your Tracked Machinery’s Undercarriage

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Reduce replacing cost for undercarriage components

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When it comes to maintaining tracked construction machinery like excavators and bulldozers, the undercarriage is one of the most expensive and essential components. A well-maintained undercarriage not only ensures smooth operations but also significantly reduces costly downtime and repairs. In this newsletter, we delve into critical issues, from track adjustment failures to choosing the right track shoes and measuring undercarriage wear.

Measuring a track carrier roller of a bullozer

The Hidden Costs of Incorrect Track Adjustment

Improperly adjusted tracks are a common issue in tracked excavators, track-loaders and bulldozers, often overlooked by operators. Tracks that are too tight accelerate wear on bushings, sprockets, idlers, and even the bearings in final drives. This can lead to premature failure of components, despite other parts, like rollers and track links, still being in good condition.

For excavators in the 15–30-ton range, track sag is critical and should generally be set between 3-5 inches (7-10 cm). A track chain that is too tight not only shortens component life but also risks cracking bushings. Too lose chains can to jump over the idler centre rim or the sprocket during drive operation. On uneven ground track rollers are no longer guiding the chain in line.

Tip: Always refer to your machine’s manual for specific guidelines or consult your local dealer for advice.

Corrosion and Seized Track Links: A Costly Problem

A significant issue seen in hydraulic excavators is the seizing of track links due to water—especially saltwater—penetration. Damaged seals allow water to corrode internal components, locking bushings and pins in place. Attempts to restore mobility with oil or grease are rarely successful, as the damage is inside the pins and bushings, not the visible chain links.

For minor issues, riding the machine on hard surfaces may restore some mobility. However, in severe cases, replacement of the chain is unavoidable.

Finding the Right Track Shoe Width: Striking the Balance

Choosing the correct track shoe width is a balancing act. Narrow track shoes provide sometimes better traction but may cause the machine to sink into soft ground. Narrower machines are easier to transport. On the other hand, extra-wide track shoes (LGP) distribute ground pressure more evenly but introduce increased torsion forces on drive components when operating on uneven terrain, leading to faster wear.

For every application, it’s essential to select the track shoe width that minimizes both wear and operational inefficiencies. Consult an expert or dealer to determine the best fit for your machine’s typical working environment.

Caterpillar bulldozer with correct track sag of 1-2 inches

Precision Measurement: Know Your Undercarriage’s Remaining Life

The undercarriage accounts for a substantial portion of a machine’s value—take the Caterpillar D8T, for example, where the undercarriage value can reach €25,000. Misjudging the remaining life by even 30% can result in a financial loss of €7,500.

Proper measurement ensures accuracy. MEVAS-trained inspectors recommend using tools like:

  • Track Gauges: To ensure the correct track spacing.
  • Ultrasonic Gauges: For measuring track link and bushing thickness.
  • Track Roller Callipers: To assess roller diameter and wear.
  • Shoe Height Gauges: To check track shoe condition.
    By using these tools, operators can determine wear levels and predict replacement timelines accurately.

Avoiding Roller Sequence Errors

In Caterpillar or Komatsu XL bulldozers, proper track roller sequencing is crucial. These machines typically use a mix of single and double flange rollers, but inexperienced fitters sometimes install rollers in the wrong sequence—or worse, entirely single-flange rollers. Such errors can compromise performance and accelerate wear. Always cross-check roller configurations with manufacturer specifications.

Key Inspection Points for Used Machines

When inspecting a used bulldozer or excavator, pay special attention to:

  • Undercarriage Components: Measure track shoes, sprockets, track links, bushings, and idlers.
  • Equalizer Bar and Bearings: This component connects undercarriage frames and facilitates horizontal movement. Any excessive play in joints and pivots can indicate expensive repairs ahead.

Thorough inspections can save thousands in repair costs. If you’re unsure about measurements or need a detailed guide, MEVAS offers step-by-step instructions and video tutorials.

Maintaining Undercarriage Health: Best Practices
  1. Monitor Track Tension Regularly: Adjust sag based on manufacturer recommendations.
  2. Choose Track Shoes Wisely: Match the width to the terrain for optimal performance.
  3. Schedule Regular Measurements: Use proper tools to assess wear and address issues proactively.
Ready to Inspect Your Equipment?

Whether you’re maintaining your fleet or evaluating a used machine, focusing on the undercarriage will save you time and money. Need help? Contact our experts to get tailored advice and inspection services.

By taking these proactive measures, you’ll not only protect your investment but also ensure the long-term efficiency of your tracked machines.

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How to Verify the Operating Hours of Construction Machinery

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Uncovering the Real-Life History of Used Equipment

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When purchasing used construction equipment, especially machinery with multiple previous owners, accurately determining its operating hours can be challenging. Over time, machines may undergo component replacements, have their hour meters swapped out, or even be assembled from parts of other machines. The main components, such as engines, hydraulic pumps, and transmissions, typically have a lifespan of 10,000 to 20,000 operating hours, and replacing them can be costly. Knowing how many hours each component has operated is essential.

Inspector downloading info from machine ECM

Unfortunately, some machines may have had their hour meters replaced or even manipulated to show fewer hours than they’ve actually been used. This can mislead buyers and inflate the machine’s market value. So, how can you ensure that a machine’s recorded hours are accurate?

Verifying Operating Hours: What Are Your Options?

There are several ways to uncover a construction machine’s true history:

  • Consult Authorized Dealers: The simplest method is to contact an authorized dealer for the machine’s brand. Many manufacturers maintain detailed service records, often accessible through dealer databases. For example, Komatsu stores this data through the Komtrax system.
  • Access Product Status Reports: Some brands, like Caterpillar and Volvo-CE, offer downloadable product status reports, known as PSR or MATRIS reports. These reports provide insights into fuel consumption, historical temperature and pressure data, and other valuable metrics. Key operational events are time-stamped with specific operating hours, allowing you to verify if the displayed hours align with the machine’s actual usage. For Caterpillar, these reports can even include serial numbers for original components like the engine and transmission.
  • Send an Inspection Service to Check the Equipment: An experienced technician can perform a thorough inspection to determine the actual condition of the machine. They can determine whether the condition of the drives, the engine exhaust and the machine’s performance match the operating hours.

Who Can Help with This Verification?

If the machine remains in the same country where it was recently used, obtaining data from the local dealer is usually possible, although dealer cooperation can vary. If a dealer is uncooperative, you may need to get creative in finding alternative sources of information.

For larger machines, like quarry dump trucks or open-pit mining excavators, previous users often maintain component history logs. These documents record when major parts, such as engines, gearboxes, or axles, were replaced or overhauled, which can further verify the machine’s operational history.

What measures can you take yourself?

Before you buy a machine or hire an external inspector to carry out the inspection, it is advisable to clarify a few things yourself. Ask the seller for documents that prove the machine’s service history. Ask for pictures of the machine’s and engine’s serial number plates. Consider whether the stated operating hours match the machine’s age. Use Google to see if the machine’s serial number is known, e.g. from an auction. Be especially careful if the deal looks too good.

How MEVAS Can Assist in Verifying Operating Hours

When you choose MEVAS to inspect a used construction machine, you benefit from our industry connections and specialized knowledge. Our inspectors are equipped with diagnostic tools for Caterpillar machines and some Volvo CE models. In cases where we don’t have direct access to a brand’s diagnostic tools, we can reach out to local dealers on your behalf to inquire about available data.

With a MEVAS inspection, you’ll receive an assessment of whether the condition of key components aligns with the machine’s displayed operating hours. As independent inspectors since 2006, we bring both expertise and integrity to every inspection. We can also guide you toward trusted dealers with reputable equipment or, conversely, advise caution when a machine supplier requires extra scrutiny.

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How to Become a Heavy Equipment Inspector: A Career Guide from MEVAS

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Are you interested in pursuing a career in inspecting construction machinery?

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Whether you’re fascinated by heavy equipment or already have experience in the industry, here’s a guide on the essential skills, potential job opportunities, and earning potential in the field of machinery inspection. 

Inspector Wolfgang just took an oil sample
Heavy Machinery Oil sampling

What Basics Do You Need to Become a Heavy Equipment Inspector?

Inspecting heavy construction machinery demands a solid technical foundation and hands-on experience. A successful inspector doesn’t just identify visible wear or damage—they often rely on intuition and experience to detect underlying faults. When assessing a machine, inspectors draw on a deep knowledge of mechanics, sometimes deducing issues based on subtle clues like unusual sounds or performance inconsistencies. This wealth of experience often distinguishes a skilled inspector, making their insights invaluable for clients.

Where Can You Work as a Construction Machinery Inspector?

Inspectors have multiple employment options. Many work with testing organizations that conduct annual safety checks, ensuring machinery complies with national safety regulations. These inspections, however, usually cover only basic safety requirements. In-depth condition inspections, which are often required by large construction companies and sales organizations, go further to analyse the technical health of machinery. This deeper insight helps with calculating operating costs, risk assessment or determining resale value, especially for used equipment being sold at auctions or through dealerships.

What is an Independent Machinery Inspector?

In the construction industry, inspections performed by machinery dealers can sometimes lack impartiality since they directly support sales. For buyers purchasing equipment from unfamiliar sources, independent inspectors offer an unbiased assessment. Unlike dealer-employed inspectors, an independent inspector works without involvement in the sales process, ensuring a neutral, accurate evaluation of machinery condition. They don’t receive sales commissions and provide objective reports that buyers can trust.

What Type of Employment Opportunities Exist?

The demand for full-time inspectors remains limited, with few companies employing machinery inspectors 300 days a year. For this reason, many inspectors take on freelance or multi-employer roles, working with different clients such as auction companies, testing organizations, or machinery safety companies. For example, inspectors at MEVAS often combine freelance inspection work with other roles in mechanics, safety assessments, or industry-related jobs to maintain a balanced workflow.

What Can You Earn as a Construction Machinery Inspector?

Earning potential for inspectors varies based on qualifications, location, and skill level. An inspector with specialized knowledge, for example, of mobile cranes or concrete pumps, may earn substantially more than someone inspecting only basic equipment. Those with a broad skill set and the flexibility to work across different organizations can often command higher rates, making this career path quite lucrative for seasoned professionals.

Where is MEVAS Looking for Inspectors, and What Skills Are Needed?

At MEVAS, we’re always looking to expand our global inspector network, especially in regions with high demand for used machinery evaluations. Currently, we’re seeking inspectors in China, Norway, Sweden, southern France, central Spain, and even Bavaria. If you have specialized knowledge in heavy machinery and are interested in joining us as a freelance inspector, we’d love to hear from you! Extensive experience in the field of heavy machinery and a good command of English are essential! You should have a good knowledge of Caterpillar, Komatsu, Terex and Volvo products.

Ready to start your journey toward becoming a heavy equipment inspector? Get in touch with MEVAS today and explore how you can contribute your skills in this rewarding field.

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Hydraulic pump breakdown and metal shavings and debris migrating into system

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The worst scenario for a Heavy Machinery user:

One of the most challenging situations for machinery operators is hydraulic pump failure, which can result in metal debris circulating through the entire hydraulic system. If not addressed immediately, this can lead to severe damage to critical components like valves, cylinders, and hydraulic motors.

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Hydraulic cylinder of an excavator
Reman hydraulic pump
Hydraulic solenoids and valve bloc

How to Respond Quickly and Effectively?

If you find yourself facing a hydraulic pump breakdown, here’s our recommended step-by-step guide for repairs and long-term damage prevention:

1. Immediate Shutdown

  • Stop the machine immediately: Continuing operation will spread metal debris throughout the system, risking more extensive damage. Halting the machine minimizes this risk. The same applies, by the way, if you have damage to the drive motor. Stop immediately and do not continue riding.

2. Complete System Flush

  • Drain the hydraulic fluid: Metal shavings are likely contaminating the hydraulic oil. Removing all old fluid prevents further circulation of debris.
  • Oil filtration and analysis: Fine-filter the hydraulic oil and send a sample to a lab to assess its condition. Based on the analysis, you may need to perform a kidney-loop filtration to clean the oil for reuse.
  • Thorough system flush: Flush the entire hydraulic system, using the filtered oil where possible to remove contaminants from all parts of the circuit.

3. Filter Replacement

  • Replace all hydraulic filters: Contaminated filters become ineffective at trapping metal debris. Replacing them ensures proper filtration after repairs.
  • Upgrade to high-capacity filters: Consider installing additional filters in key areas to catch any remaining particles and further protect the system.

4. Inspect and Clean Key Components

  • Inspect the pump and hydraulic components: Before replacing the pump, examine the hydraulic motor, control valves, and actuators for wear or contamination. These may need cleaning, servicing, or replacement.
  • Clean the hydraulic reservoir: Metal debris often settles in the tank, so a thorough cleaning is essential to avoid future contamination.

5. Hydraulic Pump Replacement

  • Replace the damaged pump: Since the pump is the source of the debris, it must be replaced with a new or rebuilt unit. Repairing a severely damaged pump is often insufficient.

6. Inspect Cylinders and Hydraulic Motors

  • Check for scoring or damage: Hydraulic cylinders, solenoids, valves and actuators can be damaged by circulating debris. If there’s internal scoring, these components may need to be rebuilt or replaced.

7. System Testing

  • Test after repairs: Once the pump is replaced, the system flushed, and new filters installed, refill with fresh hydraulic oil (or kidney-looped oil) and perform operational tests. Monitor pressure and flow to ensure everything is running smoothly.
  • Monitor filters closely: Residual debris might still circulate, so check filters frequently and replace them as necessary until the system is fully clean.

8. Preventative Measures for the Future

  • Routine fluid analysis: Regular hydraulic oil testing can detect early signs of contamination, allowing you to take corrective actions before major failures occur. In an earlier version of this newsletter, we explained the advantages of oil analysis.
  • Consistent maintenance: Schedule routine system maintenance, including timely filter replacements and oil sampling, to extend the life of your hydraulic components and prevent costly downtime.

9. Where to Find a Replacement Hydraulic Pump?

  • OEM Manufacturer: The highest quality option is to source an original equipment manufacturer (OEM) hydraulic pump through your machine’s local dealer. Though more expensive, OEM parts ensure a perfect fit and maximum reliability.
  • Remanufactured or rebuilt pumps: For a cost-effective alternative, consider a remanufactured or rebuilt hydraulic pump. There are several suppliers offering varying levels of quality, so it’s best to consult with local contractors who have experience with reliable reman parts.

By acting quickly and following these steps, you can minimize downtime, prevent further damage, and keep your heavy machinery operating at its best. If you need assistance with parts, repair manuals or expert advice, we’re here to help! We can also support with valuation of machinery for the insurance, repair cost estimation and sourcing of a replacement pump.

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Downgrading of engines in construction machinery, DPF removal

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Conversion of TIER IV engines to TIER III

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Modern construction machinery requires high-quality diesel fuels with a low sulphur content. Machines in the Tier IV emissions group usually have DPF systems with AdBlue injection (SCR) installed. These have the task of cleaning the exhaust gases and reducing pollutants by injecting AdBlue and using particle filters. Some engines only work with controlled exhaust gas recirculation and can therefore still manage without AdBlue injection. This usually depends on the performance levels of the respective engines.

The problem with diesel fuels

In many countries, the quality of fuels for construction machinery is lower than in Europe or America or the sulphur content is too high, making this fuel unsuitable for long-term use. This causes major problems in the daily operation of machines and engines. If such machines are used with low fuel quality without modifications, they stop working after a while. This may be because the particulate filters are clogged, the fuel filters become blocked or the software reports an error. Another problem is that the engine control unit no longer recognises excessive exhaust gas temperatures or incorrect back pressure. Reducing the engine output to an emergency programme is the lesser of two evils. Such a problem can ultimately lead to the destruction of the engine.

Exhaust Aftertreatment System with AdBlue and NOx sensors

What solutions are available and how do they work?

Many manufacturers of construction machinery offer solutions for downgrading (de-tiering) to lower emission standards. In some cases, complete conversion kits are offered. However, this conversion is relatively expensive and irreversible. Machines lose their CE or EPA certification. In many countries, the conversion contravenes applicable laws. This applies in particular if the machines are not exported after being converted to a lower emission standard. Many manufacturers and their concessionaires have therefore stopped downgrading engines. They often only offer downgrades to complete engines and exhaust systems with lower emission standards for export. This gap is being filled by dubious providers offering supposedly uncomplicated engine conversions. The internet is full of offers for DPF removal or AdBlue removal kits.

What are the dangers and risks of conversion?

We are regularly contacted by users of converted construction machinery because problems arise with the modified exhaust systems. Machines stop working after a repair or replacement of components or only run at idle speed. Engines overheat or have low performance. Some machines no longer start at all because the software blocks the ECU. The excavator or loader may then be parked in Africa, 200 kilometres from the nearest service base, and fail to work.

What causes this and can it be repaired?

An engine with DPF has various sensors installed. The exhaust gas pressures are measured before and after the particulate filter. Exhaust gas temperatures are checked. There is an AdBlue dosing device equipped with sensors for injection. The NOx content is measured. All these sensors communicate with the ECU of the construction machine via the CAN bus. The sensors report operating values and these are compared with the data stored in the ECU. This means that if a machine has been modified, the software also has to be adapted accordingly. Another method used is to emulate the required values. The ECU is made to believe that all values are correct. This procedure involves a fairly high risk: the biggest problem with illegal conversions is that in the event of a future fault, the service technician will not be able to trace which type of modified system has been installed. Changing sensors or installing the latest software leads to a complete breakdown in communication between the exhaust system and the engine ECU.

What does the environment say about these modifications?

It has been established that engines that fulfil Tier IV emission regulations no longer even fulfil the emission regulations of TIER II after an alleged downgrading to Tier III. It is also logical that an engine with a functioning exhaust system is less harmful to the environment. Renowned construction machinery dealers, such as the German Zeppelin-Baumaschinen and Komatsu-Europe, have completely stopped downgrading engines for this reason

Testing exhaust systems when inspecting used construction machinery

When the Heavy Equipment Inspectors of Mevas test a used construction machine for you before it is shipped or imported, the exhaust systems are also examined. The inspectors check error messages and investigate whether the exhaust aftertreatment systems have been modified. These details are included in a machine report. So, if you want to make sure that a machine you want to import does not cause any problems with the exhaust system, we recommend an inspection by our technician. This costs significantly less than installing a new DPF system! Our inspectors are available in more than 20 countries. For Caterpillar and older Volvo construction machines, we access the ECU data directly. For others, we use the information from the displays in the machine.

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Información gratuita sobre tecnología de maquinaria de obras públicas

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Aquí encontrará información sobre los detalles técnicos que intervienen en la comprobación y elección del equipo OP adecuado para su trabajo. Los documentos se añaden regularmente. No dude en volver para ver las novedades.
Los enlaces remiten a documentos PDF. Se pueden descargar gratuitamente. También es posible de imprimir los documentos. Puede que nuestro Español no sea perfecto. Somos más hábiles con las máquinas OP que con la traducción 😉

¿Hay algún tema que le interese especialmente? Póngase en contacto con nosotros y escribiremos un artículo sobre su tema.

No se pierda ni un artículo gracias a nuestro boletín de noticias

En nuestra página de LinkedIn publicamos quincenalmente un boletín técnico sobre un tema interesante de la tecnología de la maquinaria de construcción (anglais). ¿Le gustaría suscribirse? LinkedIn también le ayuda a traducirlo a su propio idioma. Puede darse de baja en cualquier momento.

Detalles técnicos y servicio para maquinaria de construcción Liebherr
Liebherr HS 843
diagnóstico de aceite para maquinaria de obras públicas y la industria minera
¿Qué hoja de bulldozer es la adecuada para cada aplicación? Más información.

Informations gratuites sur la technique des engins de chantier

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Tu trouveras ici des informations sur les détails techniques lors du contrôle et du choix des matériel TP pour tes travaux. Des documents sont régulièrement ajoutés ici. N’hésite pas à revenir pour voir ce qu’il y a de nouveau.

Les liens renvoient à des documents PDF. Ceux-ci peuvent être téléchargés gratuitement. Il est également possible d’imprimer les documents. Notre français n’est peut-être pas parfait. Nous sommes plus à l’aise avec les machines TP qu’avec la traduction.

Il y a un sujet qui t’intéresse particulièrement ? Contacte-nous et nous écrirons un article sur ton thème.

Ne manquez aucun article grâce à notre newsletter

Sur notre page LinkedIn, nous publions toutes les deux semaines une newsletter technique sur un thème intéressant de la technique des machines de chantier (anglais). Veuillez vous inscrire ? LinkedIn t’aide aussi à traduire dans ta langue ! Tu peux te désabonner à tout moment.

mouvement horizontal autorisé pour une couronne d'orientation
Liebherr HS 843
diagnostic des huiles sur les engins de chantier et industrie minière
Quelle lame sur un bulldozer pour quelle utilisation

Diagnosis of oils in construction machinery

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What is meant by oil diagnosis and what can be learned from the results?

For users of construction machinery, there is an interesting way to detect the wear of components such as engines, hydraulic pumps or gearboxes. Of course, it is not possible to open a transmission or engine during normal use to look inside for the state of wear. So, what would be a suitable way to check whether there is unusual wear? Diagnosis of oils in construction machinery!

Oil sampling by experts of Mevas

Analysis of oils in a certified laboratory

You can find out the state of wear of components from the condition of engine oil or hydraulic oil. To do this, oils are taken from the machine and sent to a certified laboratory. Problems can be identified early on from the content of trace elements such as copper, aluminium, silicon, iron or glycol. The content of elements is given in ppm. The engineer can use the analysis protocol to determine whether certain components in an engine or hydraulic pump are subject to particular wear. It detects at an early stage whether foreign substances such as dirt or coolant are penetrating from outside and contaminating the operating fluids.

What are the requirements for a correct analysis?

When taking oils and coolants for testing, particular attention must be paid to cleanliness. Hoses, pumps and oil containers must be particularly clean. Another important factor is knowing the running time of the existing oils. It is therefore important to know how many hours the fluids have already been in use. The technician must know where in the system he can take the fluids and what operating condition the machine should be in for this. Modern machines have specific analysis plugs to drain oils.

Diagnosis of oils in construction machinery in a gold mine

Who benefits from oil analyses?

The most important group for oil analyses are the users of machines that are used intensively. Regular inspections are particularly recommended for machines in shift operation. Machines used in quarries or in the recycling sector are usually inspected regularly.

Another important group of people interested in oil analyses are buyers of used machines. For them, an analysis of the existing oils and coolants can tell them something about the machine.

Oil diagnosis by MEVAS

The international team of inspectors at MEVAS has oil diagnostics in their program. The certified Zeppelin Baumaschinen laboratory regularly carries out analyses of the oils of used construction machines. For prices starting at €120 per oil, MEVAS will be happy to take oil samples from the machine you want to buy. An analysis is available within a few days and the MEVAS technicians will provide you with an interpretation of the values ​​read. This allows you to accurately assess the risk associated with used heavy equipment.

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Article about oil analysis for heavy equipment in PDF-format