Author: Wolfgang

Who can inspect used mining and construction equipment on the African continent?

Mevas is based in Germany and having a large network of independent machinery inspectors. Most technicians are based in Europe. However, we know engineers and technicians from the industry in so many countries. It is very likely that we can support with inspections in many areas in Africa. For sure we have inspection partners in South Africa, Nigeria, Ghana and in some Arabic countries.

Mining and Plant engineers

Since we are an inspection company, offering this service since 2006 and because Wolfgang is in the industry sine 1982 we have many connections and we know many engineers. We have been inspecting machines in Botswana, Gabun, Tunisia, Nigeria and Ghana. No problem for our technicians to travel to many other countries.

Which inspection level is offered?

Depending on location and who we can send the level of inspection ranges from TA-1 to TA-2 which are Caterpillar descriptions for heavy machinery inspections. get in touch with us for more details and a specific offer.

What kind of equipment can we inspect in Africa?

• bulldozers and tracked loaders
• wheel loaders and backhoe loaders
• earthmoving and mining excavators
• quarry and mining trucks
• road construction machinery
• crushing and screen plant

The inspection fee for machinery in Africa depends very much on location. If you send us a machine list with location, machine types and info about local circumstances in regard of safety we can raise an offer within a few hours.

Changing the hour meter reading at Caterpillar

How is it possible to edit the hour meter on my CAT machine? Is there a possibility to change hour reading on the ECM or ECU of the machine? Can I do this with the CAT Electronic Technician? Will it be possible to see the attempt to change the hours? 

Do I need a factory passkey?

Some interesting questions, do you agree? I wonder why someone is asking Google for it. Does he want to betray a potential buyer? Some forums are full of those questions. Obviously many people have an interest to reduce the hour meter reading.

If you go to Google and start a search Google-Instant will show you the most relevant entries. It means Google proposes what many others are looking for. The screenshots I made are shoing there is a high interest in this issue. Most relevant search is Caterpillar Hour Meter Reset 🙁

How can you avoid to become a victim of hour meter fraud?

The answer is easy. Send a professional inspector to check the machine on your behalf before you purchase it. I will keep this post updated how many clicks it got from the Google search. It will show how many people are looking for this topic.

Contact us for more info on this topic. We work inthe field of used machinery inspections for more than 20 years.

Is it possible and legal to change the hour meter reading?

Yes, it is technically possible to change the service hour meter reading on a used heavy machine. However, it is illegal in many jurisdictions as it involves tampering with the machine’s records, which could be considered as fraud or misrepresentation.

In some countries, tampering with hour meter readings is a serious violation of the law and can result in heavy fines or even imprisonment.

It is always recommended to buy used heavy equipment from a reputable source and have a thorough inspection performed by a professional inspector to ensure accurate hour meter readings and the overall condition of the machine.

Checking an excavator or bulldozer undercarriage components to know their remaining life

The most expensive and most important assembly when evaluating a bulldozer is certainly the undercarriage. Therefore, when inspecting bulldozers, we pay special attention to the condition of the undercarriage. We have reference values for Caterpillar machines and measure all components. This allows us to accurately determine the remaining service life. We have created an instruction in which we explain our procedure step by step. Click here to watch it. After watching you know what to look for when measuring the track shoes, sprockets, track links, bushings and idlers. If you are not sure about measuring or have any questions – just contact us.

Is this service included in an Mevas inspection?

Yes, on request and for larger machines this service is included for tracked machines from Caterpillar. We do measure all components. Remaining life values will be calculated with the CAT CTS Undercarriage Handbook. When inspecting machines of other brands, we assess the remaining service life based on our experience. Click here for our video explaining the measurement of the undercarriage step by step.

Since the undercarriage is one of the most expensive components on these machines and can be very expensive to replace, we recommend special attention to inspection here. If you are looking to buy a second hand machine in Europe – get the remaining life of the U/C confirmed by MEVAS.

Which tools can be used to measure U/C components?

To measure undercarriage components of a track type tractor or an excavator, the following tools can be used:

1. Track Gauge or meter – It is used to measure the track gauge, or the distance between the tracks, to ensure that it is within the manufacturer’s specifications.
2. Track Roller Caliper – It is used to measure the diameter of the track rollers and the wear on the bottom of the track roller.
3. Idler Pin Gauge – It is used to measure the idler’s diameter and the wear on the idler’s bearing surfaces.
4. Ultrasonic Gauge – It is used to measure the thickness of the track links and the wear on the bushings.
5. Chain Wear Gauge – It is used to measure the wear on the track chain and to determine if the chain needs to be replaced.
6. Shoe Height Gauge – It is used to measure the wear on the track shoe and to determine if the shoe needs to be replaced.

By using these tools, it is possible to accurately measure the wear on the undercarriage components and determine when they need to be replaced or repaired, which helps to extend the life of the track type tractor and reduce maintenance costs.

What about wear in other undercarriage components?

Other important points when inspecting a used dozer are the play in the joints and bearings, especially in the so-called equalizer bar. This cross member connects the right and left undercarriage frames on many bulldozers. Together with the pivots in the rear area of ​​the drive frame, this cross member enables the drives to move horizontally. If you want to know more – get here to a short film. Make sure  that you look for these points, otherwise very expensive repairs may become necessary.

This service for undercarriages is just a part of our wide portfolio. We know about engines, hydraulic pumps, swing bearings and machine valuation.

Where can I find a professional inspector?

Mevas is the leading provider of inspections of used machinery around the world. Based in Germany, the company has a global network of inspectors. There may be others inspection more machines. But this does not always happen for the benefit of a potential buyer.

Allow us to introduce ourselves briefly: Mevas has been testing the condition of heavy machinery for over 19 years. The idea came about when the company owner realised, in his previous job, that the used machines he was buying were often in worse condition than stated by the seller.

This inspired the idea of carefully checking machines before purchasing them. We now offer this service to an expanding client base from all over the world. Similarly, we offer this service to sellers to help them sell their machines by providing an inspection by an independent third party.

Which used heavy machines can be inspected?

Mevas inspectors can perform inspections for:

1. Excavators (track excavators, mobile excavators, min diggers, quarry shovels)
2. Bulldozers and Tracked Loaders
3. Loaders (Wheel Loaders, Skid Steer Loaders, Backhoe Loaders)
4. Graders and Wheel dozers
5. Dump Trucks
6. Compactors for Soil and Waste
7. Rollers (Vibratory Rollers, Pneumatic Rollers, Tandem Rollers)
8. Scrapers and Bucket Dozers
9. Off-Highway Trucks and on the Road Trucks
10. Drilling Rigs, Pile Drivers, Surface Drills, Civil Engineering Machinery
11. Concrete Mixers, concrete pumps and readymix trucks
12. Pavers for Asphalt and Concrete
13. Telehandlers, Telescopic Forklifts
14. Trenchers, Milling Machines, Reclaimer and Recycler
15. Reach Stackers and Container Handlers
16. Agricultural Tractors, Combines, Harvester

What does an Mevas inspection report contain?

We create a structured inspection report for every type of used construction machine or vehicle.

At the beginning, the inspector records the machine’s equipment and configuration. This includes checking whether the unit has air conditioning, additional hydraulic lines, a dozer blade (on excavators), a CE certificate, or a quick coupler. Hour meter reading is taken.

The actual inspection then starts. First, the cab is examined in detail: seat condition, switches, display instruments, air conditioning, windows, mirrors, and windscreen wipers are checked carefully.

Next comes the engine inspection. After verifying the operating fluids such as coolant and oil condition, the engine is started. The inspector checks for unusual smoke, abnormal noises, or other signs of increased wear.

Following the engine, the machine’s external components are examined. This includes the frame, boom or lift arm, all doors and hatches, storage compartments, lighting, and paintwork.

The inspection then focuses on the hydraulic system. Hoses, cylinders, and hydraulic pumps are checked for leaks, while the hydraulic pump and valve block are evaluated for noises or pressure issues.

Once these checks are complete, the functional test begins. Here, the inspector observes:

• Play in joints and linkages
• Proper drive performance
• Unusual noises
• Whether all functions operate normally

Depending on the type of machine, relevant attachments such as buckets or shovels are also inspected and their details recorded.

Finally, the tyres or undercarriage are checked for wear and assessed in detail. In the last section of the inspection report, any additional remarks are documented. The inspector concludes with a summary comment on the machine’s overall condition, and in most reports, the transport dimensions are also included.

This list is not exhaustive, but covers the most commonly used earthmoving and construction machines. The specific machines used for a construction project depends on the type and scope of the work, as well as the local conditions and regulations.

There is a more recent version of the info about oil sampling available!

Why take oil samples from heavy used machinery?

Analyzing the oils used in construction machinery can be useful to get information about wear from the contents of the used oil. An analysis of the existing oils only makes sense if you have an approximate idea of ​​how long the oil was in use. If the oil has only recently been changed, an analysis of the condition is not very useful. There are then too few analyzable particles in the oil. If the oil used is much older than permitted, i.e. the change intervals have been significantly exceeded, the values ​​will also be incorrect. But if the oil is in a normal change cycle, you can read a lot of information from the trace elements. It is therefore important to know whether the prescribed maintenance intervals on the construction machine have been observed.

How to take an oil sample from heavy used machinery?

For meaningful results, it is necessary to warm up the machine first. Otherwise there will be many particles deposited on the bottom of the oil pan or in the filter. The oil must therefore be vigorously moved and the viscosity increased in order to obtain meaningful results. Then use a very clean container and a pump to remove the oil, e.g. from the engine/the hydraulic circuit or from the gearbox. The extracted oils need to be sent to a certified laboratory. There, the lubricants are analyzed for their ingredients using various methods. It can be used to determine whether there are increased levels of silicon, sulphur, copper, coolant or other trace elements in the oil.

What can I read from the results?

A professional laboratory for the analysis of construction machine oils usually provides us with an interpretation of the analyzed values. Too much silicon means dirt gets into the machine’s systems and you have to look at where and how dirt gets into the system. If coolant is found in the engine oil, there is a problem in the cooling system. If traces of aluminum are found in the transmission oil, one can conclude that there is increased wear in some components. The same applies to the presence of chromium, copper or magnesium.

Mevas offers oil sampling as additional service during inspections. As soon as we have the results of an oil analysis, our technicians will advise you and describe the possible causes. A hint is given on what to do to avoid early problems. Do you have any questions? Contact us today.

What is an oil analysis useful for on excavators and wheel loaders?

Oil analysis, also known as fluid analysis or lubricant analysis, is a valuable diagnostic tool used in the maintenance and management of excavators and wheel loaders, as well as other heavy equipment. Here are some of the key benefits and purposes of oil analysis for these machines:

1. Condition Monitoring: Oil analysis provides a way to monitor the overall condition of the equipment. By analyzing oil samples regularly, maintenance personnel can detect early signs of wear, contamination, and potential issues, allowing for proactive maintenance.
2. Component Health Assessment: Oil analysis can reveal the health of critical components such as engines, hydraulic systems, and transmissions. It can help identify wear and tear on internal parts like bearings, gears, and seals.
3. Early Problem Detection: Detecting problems at an early stage can prevent costly breakdowns and major repairs. Oil analysis can identify issues such as abnormal wear, contamination, and fluid degradation before they lead to major failures.
4. Fluid Quality Assessment: It assesses the quality and condition of the lubricating oils, hydraulic fluids, and other fluids used in the machine. This information helps ensure that the fluids are within the manufacturer’s specifications, promoting optimal performance.
5. Contamination Detection: Oil analysis can identify the presence of contaminants, such as dirt, water, and other foreign materials in the lubricants. Contaminants can cause damage and reduce the efficiency of critical components.
6. Fluid Change Intervals: By monitoring the condition of the oils and fluids, equipment operators can determine the optimal time to change or replace them, reducing unnecessary maintenance costs.
7. Extended Component Life: Effective oil analysis and timely maintenance can extend the life of key components, such as engines, hydraulic systems, and transmissions, resulting in cost savings over the long term.
8. Performance Optimization: Oil analysis can help ensure that the machine operates at its peak performance by maintaining clean, properly lubricated components.
9. Environmental Impact Reduction: Proper maintenance, guided by oil analysis, reduces the risk of fluid leaks and component failures, minimizing the environmental impact of equipment operation.
10. Cost Savings: Regular oil analysis can lead to cost savings through reduced downtime, lower repair and replacement costs, and improved equipment reliability.
11. Warranty Compliance: For equipment under warranty, oil analysis can help ensure that maintenance practices comply with the manufacturer’s requirements, preserving warranty coverage.

In summary, oil analysis is a valuable tool for excavators and wheel loaders, as it aids in the early detection of problems, extends the life of components, optimizes performance, reduces maintenance costs, and contributes to efficient equipment management. It is an essential part of a comprehensive maintenance and reliability program for heavy equipment. On a MEVAS TA-2 inspection an oil analysis is always included.

Excavator inspection checklist and what to approve

Inspection of used excavators is not everyone’s daily business. Less experienced technician sometimes miss important items such as a leaking swivel, play in swing bearing, cracks in boom or worn idler guides. A good strategy before you inspect used equipment is using a detailed inspection checklist. For excavators or any other machinery you need to check or get checked. So you make sure to check every component and make sure no important item will be missed. Here you can find a sample for such an checklist.

Mevas excavator inspection checklist

If no own engineer is available for the inspection – talk to Mevas. We have local technicians in more than 22 countries and can access other places easily.

Which items should be inspected during an excavator inspection?

During inspection of a used track excavator, the following items should be inspected:

1. Engine and transmission (wheel excavator)
2. Hydraulic system and pumps, pump drive
3. Undercarriage components and tires on wheel excavators
4. Cab and controls
5. Boom and stick
6. Bucket and teeth
7. Electrical system, ECM, ECU, monitoring system and alert lights
8. Swing bearing and swing gear

It is important to inspect each of these items thoroughly, as they are critical components that affect the excavator’s performance and overall condition. Some of these items are more critical than others, such as the engine and hydraulic system, which directly impact the excavator’s power and operation, while others, such as the cab and controls, affect the operator’s comfort and safety. The importance of each item will depend on the specific use case and requirements for the machine.

What are the important assemblies of a crawler excavator?

A crawler excavator is a complex piece of heavy machinery designed for digging, excavation, and earthmoving tasks. It consists of several important assemblies and components that work together to perform various functions. Here are the key assemblies of a typical crawler excavator:

Main items

1. Crawler Tracks: The crawler tracks are a critical component that allows the excavator to move on various terrains. They consist of a system of tracks or chains, sprockets, and rollers.
2. Undercarriage: The undercarriage includes the lower frame of the excavator and houses the crawler tracks, rollers, and sprockets. It provides stability and mobility to the machine.
3. Upper Structure: The upper structure houses the engine, operator’s cabin, and hydraulic systems. It is the part of the excavator that rotates and pivots on the undercarriage.
4. Engine: Crawler excavators typically use diesel engines for their high torque and reliability.
5. Hydraulic System: The hydraulic system powers the various functions of the excavator, including the boom, arm, bucket, and other attachments. It controls the flow and pressure of hydraulic fluid to operate the machine’s movements.
6. Boom: The boom is an extendable arm that is attached to the upper structure and is used for reaching and lifting.
7. Arm: The arm, also known as the dipper arm or stick, is connected to the boom and can be extended and retracted.
8. Bucket: The bucket is attached to the arm and is used for digging, scooping, and loading materials. Buckets come in various sizes and configurations for different tasks.
9. Operator’s Cabin: The operator’s cabin is where the machine is controlled. It houses the controls, displays, and a comfortable seat for the operator.
10. Counterweight: The counterweight is a heavy weight placed at the rear of the excavator to balance the weight of the front-end attachments and prevent the machine from tipping over.
11. Hydraulic Cylinders: These are responsible for moving and controlling the boom, arm, and bucket. They extend and retract to perform digging and lifting operations.
12. Control System: The control system includes joysticks, pedals, and buttons in the operator’s cabin that allow the operator to control the various movements and functions of the excavator.
13. Attachments: Crawler excavators can be equipped with various attachments such as grapples, breakers, thumbs, and more, depending on the specific job requirements.

Summary

These are the fundamental assemblies and components of a crawler excavator. The combination of these elements enables the machine to perform a wide range of excavation and construction tasks with precision and efficiency.

What is different between a tracked and a wheel excavator?

A wheel excavator, as the name suggests, differs from a crawler excavator primarily in its mode of mobility. While the basic functions and components are similar, the wheel excavator is mounted on wheels instead of crawler tracks. Here are the key differences between a wheel excavator and a crawler excavator:

Mobility:

• Crawler Excavator: It is equipped with crawler tracks that provide excellent stability and traction on uneven or soft terrain. Crawler excavators are often used in rough and challenging terrains, including construction sites, mines, and forestry operations.
• Wheel Excavator: Wheel excavators are mounted on wheels, similar to a typical vehicle. They are more suitable for operating on roads or other solid surfaces. Wheel excavators offer greater speed and mobility on paved or firm ground, making them well-suited for urban construction or roadwork.

Undercarriage:

• Crawler Excavator: It has a heavy undercarriage that houses the crawler tracks, rollers, and sprockets, which provide stability and distribute the machine’s weight evenly over a larger surface area.
• Wheel Excavator: The undercarriage of a wheel excavator consists of wheels and tires, which are more similar to those of a truck or a vehicle. This undercarriage is designed for improved road travel.

Ground Pressure:

• Crawler Excavator: Crawler excavators have a lower ground pressure due to the larger surface area of their tracks, making them suitable for work in soft or sensitive terrains without causing as much ground damage.
• Wheel Excavator: Wheel excavators typically have a higher ground pressure compared to crawler excavators. This can make them less suitable for soft or sensitive ground conditions.

Versatility:

• Crawler Excavator: Crawler excavators are known for their versatility in off-road applications and rough terrains. They can handle a wide range of tasks, from digging and lifting to forestry work.
• Wheel Excavator: Wheel excavators are more specialized for tasks that involve frequent movement between job sites on solid surfaces. They are often used for urban construction, road maintenance, and tasks that require frequent relocation.

Speed and Travel:

• Crawler Excavator: While crawler excavators are slower when it comes to road travel, they excel in off-road mobility and stability.
• Wheel Excavator: Wheel excavators can travel at higher speeds on roads and are better suited for tasks that involve longer travel distances between worksites.

In summary, the main difference between a wheel excavator and a crawler excavator is their mobility and undercarriage. Wheel excavators are designed for jobs that require frequent movement on roads and solid surfaces, while crawler excavators excel in off-road applications and challenging terrains. The choice between the two types of excavators depends on the specific job requirements and operating conditions.

Have a professional service inspection excavators before you buy

Protect your investment and buy with confidence—MEVAS inspection experts uncover hidden defects, prevent costly surprises, and provide objective condition reports for any used machine. Gain negotiation power, extend equipment lifespan, and ensure safe operations by choosing independent, professional machine inspections before purchase.