Starting a backhoe contracting business is an exciting venture for anyone with a passion for construction and excavation work. Backhoes, versatile pieces of equipment known for their ability to dig, lift, and load, have long been a cornerstone in the construction industry. From small residential projects to large-scale infrastructure tasks, backhoes are invaluable for tasks such as digging trenches, clearing debris, and handling various types of earthmoving.
For new contractors, however, breaking into the market can be challenging. Whether you're just starting with a backhoe and a small team or expanding into a full-fledged contracting business, it’s essential to plan carefully, maintain high standards of quality, and build strong relationships with clients.
This article provides detailed advice and considerations for new backhoe contractors looking to establish themselves in the industry.
Understanding the Backhoe and Its Capabilities
Backhoes, also known as tractor-backhoe loaders, combine the functionality of a front loader and a rear-mounted excavator. These machines are equipped with a bucket on the front for scooping and a digging arm at the back, which is often used for trenching and excavation.
Backhoes are used in a wide range of applications, including:

• Excavation: Digging trenches, foundations, and holes for utility installation.
  
• Material Handling: Loading materials such as dirt, gravel, and debris into trucks.
  
• Road Work: Used for grading, leveling, and clearing roads or pathways.
  
• Demolition: Removing old structures and debris in preparation for new construction.
  

1. Machine Size and Power: Backhoes come in different sizes, ranging from compact models suitable for residential work to large models designed for heavy-duty construction tasks. Choosing the right size ensures that you can handle the type of work you are most likely to encounter. Compact backhoes are ideal for tight spaces, while larger machines are necessary for heavy lifting and deep excavation.
   
2. Hydraulic Power and Reach: The power and reach of the backhoe’s arm are critical for excavation work. Make sure the backhoe has enough lifting capacity and digging depth for your needs. Some models offer advanced hydraulic systems that can make operations more efficient.
   
3. Attachments and Versatility: A good backhoe can be fitted with a range of attachments, including augers, grapples, and breakers. The more versatile your equipment, the more types of jobs you can take on. Assess whether a model offers compatibility with a range of attachments that fit your business needs.
   
4. Brand and Durability: Trusted brands such as Caterpillar, John Deere, Case, and Kubota are known for manufacturing durable and reliable backhoes. Choosing a reputable brand ensures that you are investing in quality equipment that will last longer with fewer maintenance issues.
   
5. Maintenance and Parts Availability: Make sure the backhoe you choose has easily accessible parts and servicing options. Reliability is key to minimizing downtime, and having access to local dealers or mechanics can save you time and money.
   

1. Word of Mouth and Networking: In the construction and contracting industry, word of mouth is one of the best ways to attract clients. Deliver high-quality service and ask satisfied clients to refer you to others. Building a solid reputation in your community can open doors to long-term contracts.
   
2. Local Advertising: Advertise in local newspapers, on community bulletin boards, and via online platforms like social media and local business directories. It’s essential to create a professional brand that potential clients can trust.
   
3. Online Presence: Having an online presence is increasingly important. Even a simple website that showcases your services, past projects, and contact details can help you attract clients. Social media platforms like Facebook and Instagram are excellent tools for promoting your services and sharing before-and-after pictures of your work.
   
4. Partnerships with Other Contractors: Collaborating with general contractors, landscapers, and other tradespeople can lead to a steady stream of business. Many construction projects require excavation work, and by partnering with other contractors, you can gain access to larger projects.
   
5. Offer Free Estimates: Offering free quotes or estimates can help clients understand the scope and cost of the work. This builds trust and allows you to establish rapport with potential clients.
   

1. Cost of Operation: Calculate the cost of running your business, including fuel, maintenance, insurance, and operator wages. These costs should be factored into your pricing structure. Failing to account for all expenses can lead to profit loss.
   
2. Competitive Pricing: When starting, it’s essential to price your services competitively. Research what other contractors in your area are charging and adjust your pricing accordingly. Be careful not to underprice your services, as it may lead to unsustainable business practices.
   
3. Track Your Expenses: Use accounting software to keep track of your expenses, profits, and invoices. Proper financial management will help you make informed decisions and avoid cash flow problems.
   
4. Consider Financing Options: If you’re starting with limited capital, financing options like loans, leasing, or equipment rental can help you acquire necessary machinery without a huge upfront investment.
   

1. Operator Training: Ensure that all operators are certified and trained to use backhoes safely. Improper operation can lead to accidents, equipment damage, and legal liabilities.
   
2. Equipment Maintenance: Regularly service your equipment to avoid breakdowns and extend the life of your machines. Create a maintenance schedule for oil changes, hydraulic checks, and tire inspections.
   
3. Adhere to Local Regulations: Ensure that you understand and comply with all local laws and regulations regarding excavation, construction, and zoning. Failure to comply can lead to fines or delays in completing projects.
   
4. Insurance: Obtain the proper insurance for your equipment, your business, and your workers. This will help you manage the risks involved in heavy equipment contracting, covering both liability and worker's compensation.
   

1. Invest in Additional Equipment: As your workload increases, you may want to invest in additional backhoes or other machinery to expand your capabilities. This allows you to take on multiple projects at once and handle larger jobs.
   
2. Hire Skilled Employees: Hiring experienced operators and crew members can free up your time and improve the efficiency of your projects. With skilled workers, you can tackle larger projects with greater precision and speed.
   
3. Expand Service Offerings: Once your business is established, consider expanding your services to include other construction tasks such as trenching, grading, and site preparation. This diversification can help stabilize your income by allowing you to handle a broader range of projects.
   

Toro’s Compact Powerhouse and Its Market Impact
Toro, founded in 1914 in Minnesota, began as a manufacturer of tractor engines and evolved into a global leader in turf maintenance and compact utility equipment. The Dingo series, introduced in the late 1990s, was designed to meet the growing demand for versatile, maneuverable machines in landscaping, construction, and utility work. The Toro Dingo 323, a gas-powered mini skid steer, became a popular choice for contractors due to its compact footprint, hydraulic versatility, and ease of transport.
By 2015, the Dingo 323 had carved out a niche in the compact equipment market. With thousands of units sold across North America, it became a staple on job sites where space was limited but power was still essential. Its Kohler Command Pro engine, known for reliability and serviceability, was a key selling point.
Core Specifications and Operating Profile
The 2015 Toro Dingo 323 features:

• Engine: Kohler CH23, 23 HP, twin-cylinder, air-cooled
  
• Fuel type: Gasoline
  
• Hydraulic flow: 11.5 GPM
  
• Operating capacity: 515 lbs
  
• Weight: Approx. 1,500 lbs
  
• Transmission: Hydrostatic drive system
  

• Loose or corroded battery cables
  
• Faulty starter motor
  
• Malfunctioning safety switches (e.g., parking brake, auxiliary lever)
  
• Low voltage due to parasitic drain or poor ground
  
• Ignition coil failure or spark plug fouling
  

• Measure battery voltage under load (should remain above 10.5V during cranking)
  
• Inspect starter for heat buildup or burning smell after extended cranking
  
• Clean all terminal connections with dielectric grease
  
• Check ground strap from engine block to frame
  

• Parking brake switch
  
• Auxiliary hydraulic lever position sensor
  
• Operator presence switch on the platform
  

• Inspect and clean battery terminals monthly
  
• Test safety switches annually
  
• Replace spark plugs every 200 hours
  
• Check starter draw and voltage drop during service intervals
  
• Store the machine with a battery tender during off-season
  

The Takeuchi T110 compact track loader is widely known for its versatility and rugged performance on construction sites. However, like any heavy machinery, it can encounter electrical issues over time. One such issue is related to the fuse system, which can cause various components to stop working or function intermittently. Fuses are essential for protecting electrical circuits from overloads, but when they blow or malfunction, it can lead to power loss in crucial parts of the loader.
This article explores the common fuse issues in the T110, possible causes, and how to diagnose and resolve them effectively.
Understanding the Importance of Fuses in the T110
Fuses in the Takeuchi T110 are designed to protect the machine’s electrical components, including the ignition system, lights, control systems, and hydraulics. Fuses act as a safety measure, cutting off electrical flow when an overload or short circuit is detected. Without functioning fuses, critical systems can be damaged, leading to expensive repairs and prolonged downtime.
Common Fuse-Related Problems in the T110

1. Blown Fuses
   • A blown fuse is often the first sign of an electrical issue. In the T110, a blown fuse can lead to a non-functioning part of the machine. For example, if the fuse related to the control system blows, the operator may lose functionality in the joystick or other controls.
     
   • Solution: Inspect the fuse box regularly and replace any blown fuses. Use a fuse tester to check whether the fuse is indeed blown, as it can sometimes be hard to visually confirm.
     
2. Frequent Fuse Failures
   • If fuses are blowing frequently, there may be an underlying problem such as an electrical short, poor connections, or a malfunctioning component that is drawing too much power.
     
   • Solution: If a fuse blows multiple times in quick succession, it’s important to perform a thorough inspection of the electrical system. Start by checking for short circuits or damaged wires. Look for signs of wear or corrosion in the fuse box or wiring harness, which could be contributing to the problem.
     
3. Loose or Corroded Fuse Connections
   • Loose or corroded fuse connections can prevent a fuse from functioning properly. This issue may prevent power from reaching the desired circuit, resulting in an electrical malfunction.
     
   • Solution: Clean and tighten all fuse connections. Ensure that the fuse terminals are free from corrosion or dirt. You can use a wire brush or electrical contact cleaner to clean terminals before reattaching them.
     
4. Incorrect Fuse Rating
   • Using a fuse with an incorrect rating can cause issues such as the fuse blowing too easily or failing to protect the circuit properly. It’s crucial to use the correct fuse rating as specified by the manufacturer to ensure proper operation.
     
   • Solution: Always replace blown fuses with those of the correct amperage rating as specified in the T110’s owner’s manual. Using the wrong fuse can cause further damage to the electrical system.
     

1. Locate the Fuse Box
   • The fuse box in the T110 is typically located near the machine's battery or behind the operator’s seat. Consult the machine's service manual to find the exact location of the fuse box and ensure that you have access to it.
     
2. Check the Fuses
   • Inspect each fuse in the box carefully. A blown fuse will have a broken filament inside, or the transparent cover may show signs of discoloration or damage. Use a fuse tester to confirm that a fuse is blown, as this can help prevent unnecessary replacements.
     
3. Inspect for Electrical Shorts or Damage
   • If you notice that fuses are blowing repeatedly, check for electrical shorts or damaged wires. Use a multimeter to check for continuity and to identify any shorts in the wiring.
     
4. Test the Components
   • Disconnect the electrical components associated with the blown fuse and test them one by one. For example, if the fuse controls the hydraulic system, check the hydraulic pump and valves for any issues that could be causing the overload.
     
5. Replace the Blown Fuse
   • Once the underlying issue is identified and resolved, replace the blown fuse with a new one of the correct rating. Ensure that all connections are secure and clean before reassembling the fuse box.
     

1. Routine Maintenance
   • Regularly inspect the electrical system, including the fuse box, wiring, and connections. Look for signs of wear, corrosion, or loose connections that could cause electrical failures.
     
2. Use Quality Fuses
   • Always use high-quality, manufacturer-approved fuses. Low-quality fuses may fail prematurely or not provide adequate protection against electrical surges.
     
3. Check for Overloading
   • Avoid overloading the electrical system by ensuring that all components are operating within their specified parameters. If the machine is regularly under heavy load, consider upgrading the fuse ratings if required.
     
4. Address Electrical Shorts Promptly
   • If you detect an electrical short or damaged wiring, address it immediately. Continuing to operate the machine with a short circuit can lead to repeated fuse blowouts and potential long-term damage to the electrical system.
     

The John Deere 450B is a compact and versatile crawler dozer used in various construction, mining, and forestry applications. One essential maintenance task for maintaining the track system of this equipment is the proper removal of plugs from the track rollers. This task is crucial for ensuring that the rollers operate efficiently, allowing for smooth and consistent movement of the machine. Over time, dirt, debris, and moisture can accumulate in these plugs, which can affect the performance of the tracks and rollers, leading to premature wear and tear.
In this article, we will explore the purpose of the plugs in track rollers, why their removal is necessary, and step-by-step instructions on how to safely and effectively remove them on a Deere 450B.
Understanding the Purpose of Track Rollers and Plugs
Track rollers are vital components in a crawler dozer’s track system. They support the weight of the machine and help distribute the load across the tracks. These rollers are mounted on the undercarriage and allow the tracks to move smoothly over rough terrain, ensuring that the dozer operates effectively.
The plugs in track rollers are designed to protect the internal components of the roller and prevent dirt, water, and other contaminants from entering. However, these plugs can also become a source of trouble if they are not removed and cleaned regularly. If dirt and moisture are allowed to build up inside the rollers, it can cause the bearings to seize, leading to reduced performance, damage, and expensive repairs.
Removing the plugs from the track rollers is a preventive maintenance procedure that allows the internal components to be cleaned and lubricated, which is critical to extending the lifespan of the rollers and maintaining the overall performance of the dozer.
Why Remove the Plugs?

1. Prevent Contamination: Over time, dirt, mud, and other contaminants can accumulate inside the track rollers. This buildup can lead to excessive wear on the bearings and other internal parts, which can result in a loss of functionality or premature failure of the rollers.
   
2. Extend Roller Life: Regularly removing and cleaning the plugs helps to keep the rollers in top condition. By removing debris and applying fresh lubrication, you reduce friction, minimize wear, and improve the overall performance of the rollers.
   
3. Improve Track Performance: Clean, well-maintained rollers ensure smoother operation of the tracks. This results in more efficient movement, better traction, and a reduced risk of breakdowns during operation.
   
4. Lubrication Access: Removing the plugs provides direct access to the roller bearings, allowing for proper lubrication and ensuring that they operate smoothly under heavy loads. Proper lubrication prevents overheating and reduces friction, leading to better performance.
   

1. Ensure the Machine is Stable
   • Before performing any maintenance, ensure that the dozer is on a flat, stable surface. If necessary, use a hydraulic jack to lift the machine or secure it with blocks to ensure stability during the process.
     
2. Locate the Plugs on the Track Rollers
   • The plugs are typically located at the ends of the track rollers. These plugs are designed to be removable and will often be positioned at the axle or bearing housing. On the Deere 450B, you will find the plugs that cover the bearings, which need to be removed for cleaning and lubrication.
     
3. Remove the Fasteners
   • The plugs are generally held in place by bolts, screws, or other fasteners. Use the appropriate tools to remove these fasteners carefully. Take note of the fastener sizes and types so you can properly reinstall them later.
     
4. Carefully Remove the Plugs
   • Once the fasteners are removed, gently pull the plugs from the rollers. Depending on how long the plugs have been in place, they may be stuck due to dirt buildup or rust. If needed, use a rubber mallet to tap around the edges of the plugs to loosen them without damaging the surrounding components.
     
5. Clean the Interior of the Rollers
   • After removing the plugs, inspect the interior of the track rollers for dirt, mud, and other contaminants. Use a clean rag or brush to remove any debris, and if necessary, apply compressed air to blow out any remaining dirt.
     
6. Lubricate the Bearings
   • Once the rollers are cleaned, apply fresh grease or lubrication to the bearings inside the rollers. This ensures that the internal components are properly lubricated and will function smoothly during operation.
     
7. Inspect for Wear or Damage
   • While the plugs are removed, take the opportunity to inspect the track rollers and bearings for any signs of excessive wear or damage. If you notice any issues, such as cracks or pitting, it may be necessary to replace the rollers or bearings before continuing operation.
     
8. Reinstall the Plugs
   • Once the rollers have been cleaned and lubricated, reassemble the plugs by aligning them back into position. Secure them with the fasteners that were removed earlier. Make sure the plugs are seated properly and tightly to avoid any leaks or issues during operation.
     
9. Test the Track Rollers
   • After reassembling the rollers, perform a test run of the dozer to ensure that the rollers are functioning smoothly and that there are no issues with the track movement. Listen for any unusual noises or vibrations, which may indicate that the rollers need further attention.
     

1. Regular Inspections: Check the track rollers for signs of wear or damage regularly. Pay close attention to the plugs and ensure they are not cracked, worn, or damaged.
   
2. Keep Rollers Clean: During routine maintenance, remove debris from the rollers and inspect the internal components. Cleaning the rollers regularly will help prevent build-up and ensure smooth operation.
   
3. Use the Right Lubricant: Always use the manufacturer-recommended lubricant for the track rollers. The right type of grease or oil will help reduce friction and prevent excessive wear on the bearings.
   
4. Check Track Tension: Ensure that the tracks are properly tensioned, as over-tightening or loosening the tracks can cause excessive stress on the rollers.
   
5. Monitor for Leaks: If you notice any hydraulic fluid leaking from the plugs or track rollers, take immediate action to fix the issue. Leaks can cause loss of fluid pressure, leading to inefficient operation and potential damage.
   

The Caterpillar 277B is a versatile compact track loader designed for demanding tasks in construction, landscaping, and material handling. Known for its powerful engine and rugged design, it’s a reliable piece of equipment on many job sites. However, like any heavy machinery, the CAT 277B is not immune to operational issues. One particular issue some operators may encounter is the engine bogging down when the machine is making hard turns or moving forward at full speed.
In this article, we will explore the potential causes of this issue, possible solutions, and how to prevent it from happening again.
Understanding the Issue
When the engine of the CAT 277B bogs down during a hard turn or when moving forward at full speed, it can significantly affect the performance of the machine. The operator might notice a sudden loss of power or an unusual decrease in engine RPM, which can make it difficult to control the machine.
This issue usually occurs when the machine is under load or during heavy maneuvering, such as sharp turns or full throttle operations. It's important to identify the underlying cause to ensure that the loader continues to operate safely and efficiently.
Possible Causes of Engine Bogging
Several factors could contribute to the engine bogging down in a CAT 277B during hard turns or full forward movement. Here are the most common causes:

1. Fuel System Issues
   • One of the most common causes of engine bogging down is a problem with the fuel system. If the fuel filter is clogged or the fuel lines are damaged, the engine may not be receiving enough fuel to maintain power during demanding operations. A restricted fuel supply can result in the engine losing power, especially under load.
     
   • Solution: Check the fuel filter and fuel lines for any blockages or leaks. If the fuel filter appears dirty, replace it. Ensure that the fuel lines are properly connected and free from cracks or damage.
     
2. Air Intake Blockages
   • A blocked or clogged air intake can limit the amount of air reaching the engine, causing it to bog down. The air filter, if dirty or clogged, can restrict airflow to the engine, leading to a loss of power, especially under heavy load conditions.
     
   • Solution: Inspect the air filter and clean or replace it as necessary. Ensure that the air intake system is free from any obstructions, such as dirt or debris.
     
3. Electrical System Problems
   • Faulty electrical components, such as sensors or wiring, can cause engine bogging. The engine control unit (ECU) relies on input from sensors to adjust engine performance. If there is a malfunction in the electrical system, the ECU may not receive the correct data, causing the engine to bog down when it needs to adjust to higher loads.
     
   • Solution: Check the wiring and electrical connections for any signs of wear or damage. Ensure that all sensors are functioning properly. If necessary, use a diagnostic tool to read any fault codes from the ECU.
     
4. Hydraulic System Issues
   • The CAT 277B's hydraulic system plays a significant role in its performance. If the hydraulic pump or motor is malfunctioning, it can affect the machine’s movement, particularly when making sharp turns or operating at high speeds.
     
   • Solution: Check the hydraulic fluid level and ensure it’s at the correct level. Inspect the hydraulic system for any leaks, and ensure that the hydraulic pump and motor are functioning properly.
     
5. Transmission Problems
   • Issues with the transmission can also contribute to engine bogging. If the transmission is not shifting properly or is slipping, it can cause the engine to bog down during acceleration or while making turns. This is especially noticeable when the machine is operating at high speeds or under heavy load.
     
   • Solution: Inspect the transmission fluid level and quality. If the fluid is low or dirty, replace it. Check the transmission for any signs of wear or malfunction and consult with a professional if necessary.
     
6. Dirty or Worn Spark Plugs
   • Dirty or worn spark plugs can cause misfiring and poor engine performance. This is particularly noticeable when the machine is under load, such as during hard turns or full throttle operations.
     
   • Solution: Inspect the spark plugs for wear or carbon buildup. Clean or replace them if necessary.
     

1. Routine Fuel System Maintenance
   • Regularly replace the fuel filter and check the fuel lines for wear or leaks. Ensure that the fuel tank is clean and free from contaminants, which can clog the fuel system and reduce performance.
     
2. Regular Air Filter Checks
   • Inspect the air filter regularly and replace it as needed. A clogged air filter not only reduces engine performance but also leads to increased fuel consumption and higher emissions.
     
3. Monitor Hydraulic System Health
   • Check the hydraulic fluid levels regularly and top them off as needed. Also, look for any leaks or signs of wear in the hydraulic system. Changing the hydraulic fluid at the manufacturer-recommended intervals will help keep the system running efficiently.
     
4. Transmission Maintenance
   • Regularly check the transmission fluid and ensure it is clean and at the correct level. If you notice any slipping or difficulty in shifting, consult a professional mechanic to inspect the transmission.
     
5. Check the Electrical System
   • Periodically check the electrical system and ensure that all sensors and connections are working properly. Use diagnostic tools to monitor the system and identify any issues before they cause performance problems.
     
6. Proper Engine Tune-Up
   • Keep the engine well-tuned by replacing spark plugs, cleaning the fuel injectors, and checking the ignition system. Regular tune-ups will help the engine run more efficiently and prevent issues like bogging down.
     

The Bobcat 7753 is a versatile and powerful skid steer loader known for its rugged performance and durability. As with any piece of heavy machinery, maintaining optimal performance is crucial to ensuring smooth operation and longevity. One of the critical components of the Bobcat 7753 is the hydraulic drive motor, which is responsible for converting hydraulic power into mechanical motion that drives the machine’s wheels. When the hydro motor begins to malfunction, it can lead to various operational issues, affecting the overall performance of the loader.
In this article, we will delve into the workings of the Bobcat 7753’s hydraulic motor, common problems that can arise, and effective troubleshooting methods. We’ll also provide insights into maintenance practices to extend the life of the motor and prevent costly repairs.
Understanding the Bobcat 7753 Hydro Motor
The Bobcat 7753 is equipped with a hydrostatic drive system, which means that it relies on hydraulic power to operate the drivetrain. The hydro motor is a critical component in this system, as it takes hydraulic fluid from the hydraulic pump and uses it to turn the wheels of the machine. The motor’s efficiency directly affects the performance of the skid steer, including speed, power, and response time.
The motor operates by converting hydraulic pressure into rotary motion. Hydraulic fluid enters the motor, causing a series of internal pistons to move and generate rotational force. This force is transferred to the machine’s drive wheels, propelling the loader forward or backward. The hydro motor is designed to handle the significant stresses placed on it during operation, but over time, wear and tear can cause it to fail.
Common Problems with the Bobcat 7753 Hydro Motor
Several issues can arise with the Bobcat 7753’s hydro motor, leading to reduced performance or even complete failure of the drive system. Understanding these issues and how to address them can help operators troubleshoot and maintain the machine effectively.

1. Loss of Power or Sluggish Performance
   

• Low Hydraulic Fluid Levels: Insufficient hydraulic fluid can cause the motor to lose power. Low fluid levels can result from leaks in the hydraulic system or improper maintenance.
  
• Contaminated Hydraulic Fluid: Contaminants such as dirt, debris, or water can enter the hydraulic system, causing the motor to perform poorly or even fail.
  
• Worn Hydraulic Motor: Over time, the internal components of the hydro motor can wear out, reducing its efficiency and performance.
  

1. Hydraulic Leaks
   

• Damaged Seals or O-Rings: The seals and O-rings in the hydro motor can wear out, crack, or become brittle over time, allowing hydraulic fluid to leak out.
  
• Loose or Corroded Fittings: Over time, fittings and connections can loosen or corrode, leading to leaks in the hydraulic lines that feed into the motor.
  

1. Excessive Noise or Vibration
   

• Damaged Bearings: Bearings within the motor may become worn or damaged, causing excessive friction and noise.
  
• Air in the Hydraulic Lines: Air trapped in the hydraulic lines can create erratic motor behavior, including noise and vibration. This is often caused by a leak in the system or improper fluid levels.
  

1. Overheating
   

• Blocked or Clogged Coolers: The cooling system for the hydraulic fluid can become clogged with debris, preventing the fluid from staying at the correct temperature.
  
• Excessive Load: Operating the machine under too heavy a load can strain the hydro motor, causing it to overheat and wear out prematurely.
  

1. Check Hydraulic Fluid Levels and Quality
   • Inspect the hydraulic fluid reservoir to ensure that the fluid level is within the recommended range. Low fluid levels are a common cause of sluggish performance and power loss.
     
   • If the fluid is dirty or contaminated, replace it with fresh, clean hydraulic fluid. Use the manufacturer’s recommended fluid type to avoid compatibility issues.
     
2. Inspect for Leaks
   • Visually inspect the hydro motor and surrounding components for signs of leaks. Pay close attention to the seals, O-rings, and fittings.
     
   • If a leak is detected, replace the damaged seals or tighten the fittings to restore proper fluid containment.
     
3. Listen for Unusual Noises
   • If the motor is making unusual noises, such as grinding or whining, it may be due to worn bearings or other internal components. In such cases, it is often best to replace the motor or have it professionally rebuilt.
     
4. Check the Cooling System
   • Inspect the cooling system to ensure that the hydraulic fluid is being adequately cooled. Clean any clogged coolers or heat exchangers, and ensure that the fan is working properly.
     
5. Test the Motor and Hydraulic System
   • Perform a pressure test on the hydraulic system to check for leaks or inconsistencies in fluid pressure. This will help you identify if the hydro motor is not receiving the proper pressure or if there are issues elsewhere in the system.
     

1. Regularly Check Hydraulic Fluid Levels: Always check the hydraulic fluid before operating the machine. Top off the fluid if needed, and ensure that it remains clean and free from contaminants.
   
2. Change Hydraulic Fluid and Filters: Periodically replace the hydraulic fluid and filters to keep the system running smoothly. This will help prevent contamination that can damage the hydro motor.
   
3. Inspect Seals and Fittings: Regularly check the seals, O-rings, and fittings in the hydraulic system for signs of wear or damage. Replacing these components early can prevent leaks and reduce the risk of motor failure.
   
4. Keep the Cooling System Clean: Ensure that the cooling system is free from debris and that the fluid stays within the optimal temperature range during operation.
   
5. Operate Within Recommended Load Limits: Avoid overloading the Bobcat 7753 beyond its recommended capacity. Excessive load can strain the hydro motor and cause it to overheat or fail prematurely.
   

Komatsu’s Global Footprint and the D85 Legacy
Komatsu Ltd., founded in 1921 in Japan, has long been a dominant force in the heavy equipment industry. With a reputation for building durable, high-performance machinery, Komatsu expanded aggressively into international markets during the 1970s and 1980s. The D85 series dozers were part of this expansion, designed to compete directly with Caterpillar’s D7 and D8 models.
The D85A-12, a mid-sized crawler dozer, was introduced in the late 1970s and remained in production through the early 1990s. It was widely used in pipeline construction, forestry, and site preparation. While exact production numbers are hard to verify, industry estimates suggest that tens of thousands of D85 units were sold globally, with a significant portion entering North America through both official and unofficial channels.
Understanding Gray Market Machines
One of the most critical distinctions in the Komatsu D85A-12 lineage is the presence of gray market units—machines originally built for overseas markets but later imported into North America outside of Komatsu’s official distribution network. These machines often share core components with domestic models but may differ in electrical systems, safety features, and part compatibility.
Operators who purchase gray market dozers often face challenges sourcing parts. While major components like brake bands, steering clutches, and transmission rebuild kits may be available, smaller items—such as lens covers, gauges, and electrical switches—can be elusive. Dealers may need to fax Komatsu Japan for part numbers, introducing delays due to time zone differences and translation issues.
Engine Variants and Performance Profiles
The D85A-12 was commonly equipped with a Cummins NH220 engine, a naturally aspirated inline-six diesel known for its reliability and simplicity. However, field modifications were not uncommon. Some units were retrofitted with NTC blocks, boosting horsepower to 330 HP. While this upgrade increased pushing power, it also introduced stress on the drivetrain and cooling systems.
Key engine specs for the NH220 include:

• Displacement: 855 cubic inches (14.0 liters)
  
• Power output: Approx. 220 HP at 2100 RPM
  
• Torque: 740 lb-ft at 1500 RPM
  
• Fuel system: Mechanical direct injection
  

• Undercarriage condition: Track links, rollers, and sprockets
  
• Hydraulic leaks: Especially around blade lift cylinders
  
• Transmission response: Smooth shifting under load
  
• Oil consumption: Excessive use may signal internal wear
  

• Verify serial number and cross-check with Komatsu’s official import records
  
• Inspect undercarriage thoroughly; replacement costs can exceed $20,000
  
• Confirm engine type and check for unauthorized modifications
  
• Test transmission and steering clutches under load
  
• Establish a relationship with a dealer or aftermarket supplier familiar with Komatsu legacy machines
  

The TMS500, a well-regarded model in the mobile crane category, has made its mark in construction, material handling, and heavy lifting industries. Designed to combine power, versatility, and ease of transport, the TMS500 crane has become a staple for many contractors who need a reliable and high-performance lifting solution.
In this article, we will take a comprehensive look at the TMS500, examining its design, specifications, operational advantages, and its suitability for various lifting tasks. Additionally, we’ll discuss the concept of “auditioning” a crane, which is vital for ensuring the crane is the right fit for a specific job.
TMS500 Crane Design and Features
The TMS500 is a truck-mounted crane known for its impressive lifting capacity and robust design. Its compact structure allows it to operate efficiently on job sites with limited space, and its mobility makes it ideal for projects that require frequent relocations.

1. Lifting Capacity and Reach
   • The TMS500 offers a substantial lifting capacity, capable of lifting loads ranging from a few tons to over 40 tons depending on the configuration and boom extension.
     
   • The crane’s long reach makes it effective for lifting materials at great heights, which is essential for high-rise construction projects, infrastructure development, and other heavy-duty tasks.
     
   • Boom Extension: The TMS500 crane features an extendable boom that allows the operator to increase its lifting radius, further enhancing its versatility.
     
2. Hydraulic System
   • The crane utilizes an advanced hydraulic system that powers its boom and other functions. The system allows smooth and precise control, making it easier for operators to manage heavy loads and execute complex lifts.
     
   • The hydraulics are designed for fast, efficient operation, allowing the crane to perform tasks in various environments, from construction sites to industrial facilities.
     
3. Operator Comfort and Control
   • The crane’s operator cab is ergonomically designed to provide comfort during long shifts. It is equipped with advanced control systems that offer ease of operation, even when performing intricate lifts or when navigating difficult terrain.
     
   • The crane also features advanced telematics and monitoring systems, allowing operators and fleet managers to track the crane’s performance and detect any issues early on, minimizing downtime.
     

1. Construction
   • The TMS500 is often employed on construction sites for lifting building materials such as steel beams, concrete panels, and heavy equipment. Its high reach allows it to lift materials to higher floors, while its compact size helps it navigate tight urban construction sites.
     
2. Industrial Lifting
   • In industrial environments, the crane’s heavy-duty lifting capabilities are ideal for handling large machinery or transporting materials between different parts of a factory or warehouse.
     
3. Oil and Gas
   • In the oil and gas sector, cranes like the TMS500 are used for lifting and installing heavy equipment such as drilling rigs, pipes, and other essential components. Its versatility allows it to operate on both onshore and offshore platforms.
     
4. Infrastructure Projects
   • Large-scale infrastructure projects often require cranes capable of lifting heavy loads over great distances, such as bridge construction, road building, or large-scale public works. The TMS500 excels in such tasks, providing the necessary power to lift massive materials while being able to move across the site with ease.
     

1. Testing Lifting Capacity
   • During the audition phase, it’s crucial to test the crane’s lifting capacity with loads that reflect the project’s needs. By performing various lift operations, the operator can verify the crane’s ability to handle the maximum load efficiently and safely.
     
   • The audition should also include tests at different boom extensions and lifting radii to ensure the crane can reach the required heights and distances.
     
2. Evaluating Hydraulic and Structural Performance
   • The crane’s hydraulic system must be thoroughly tested to ensure it can handle the expected workload without overheating or losing pressure. Any sign of hydraulic failure could lead to delays or even catastrophic failure, making it vital to ensure everything is functioning correctly during the audition.
     
   • Additionally, the crane’s structure should be tested for signs of flexing, bending, or excessive wear. An effective audition will reveal whether the crane’s design is robust enough for the expected use.
     
3. Assessing Maneuverability and Control
   • A key aspect of the audition process is testing the crane’s maneuverability, especially on construction sites with limited space or rough terrain. The TMS500 should be able to easily navigate confined spaces, and the operator should feel in full control even during complex operations.
     
   • The control systems should also be evaluated for precision and ease of use. During the audition, the operator should test the crane’s response to various commands, ensuring that it moves smoothly and accurately.
     
4. Operator Comfort and Safety Features
   • Safety is paramount in crane operations, and part of the audition process involves assessing the safety features of the crane. The TMS500 comes with built-in safety systems such as load moment indicators (LMI), anti-two-block devices, and outriggers for stability during operation.
     
   • The operator’s comfort is also a critical factor. A comfortable operator is less likely to make errors or fatigue quickly, both of which are safety concerns. Therefore, the cab should be spacious, well-ventilated, and equipped with intuitive controls and a clear view of the working area.
     

The heavy equipment industry in Canada is a vibrant sector, featuring a range of innovative machinery used across construction, mining, forestry, and agriculture. With a vast landscape, diverse industries, and a growing interest in equipment technology, Canada hosts a number of notable heavy equipment trade shows throughout the year. These events provide invaluable opportunities for manufacturers, dealers, operators, and enthusiasts to connect, share knowledge, and see the latest industry innovations firsthand. In this article, we’ll take a closer look at some of the best Canadian heavy equipment shows that have become vital gatherings for professionals in the field.
The Importance of Heavy Equipment Shows
Heavy equipment trade shows are an essential part of the construction and industrial machinery landscape. They allow manufacturers to showcase their newest machines, technology, and innovations, while also providing a venue for discussions on industry trends, training, and safety. For equipment buyers, these shows are an ideal environment to compare products, meet vendors, and stay updated on the latest developments.
In Canada, heavy equipment shows are not only large-scale exhibitions, but also critical networking events for anyone involved in the heavy equipment industry. From operators and fleet managers to engineers and manufacturers, these shows bring together key players from across the country.
Key Canadian Heavy Equipment Shows

1. CONEXPO-CON/AGG Canada
   

• Location: Alternates between major cities in Canada (typically held in Toronto).
  
• Exhibitors: Global manufacturers of construction equipment, tools, and services.
  
• Focus Areas: Construction, mining, materials handling, and safety equipment.
  
• Networking: Networking opportunities with industry leaders, potential partners, and service providers.
  

1. The Canadian Construction Association (CCA) Conference and Trade Show
   

• Location: Varies annually, with past events held in cities like Vancouver and Ottawa.
  
• Exhibitors: Equipment manufacturers, construction technology providers, safety experts, and other industry stakeholders.
  
• Workshops and Seminars: Educational sessions on project management, safety protocols, and sustainability in construction.
  
• Networking: This event is renowned for fostering connections among construction industry leaders.
  

1. The Toronto Construction Show (TCS)
   

• Location: Toronto, Ontario.
  
• Exhibitors: A mix of manufacturers, dealers, and service providers.
  
• Focus Areas: Residential, commercial, and industrial construction equipment, as well as design and planning tools.
  
• Workshops and Demonstrations: Live equipment demonstrations and technology showcases.
  

1. The Edmonton Construction and Trade Show (ECTS)
   

• Location: Edmonton, Alberta.
  
• Exhibitors: Equipment manufacturers, energy sector suppliers, and service providers.
  
• Special Focus: Heavy equipment and technologies used in mining, oil, and gas sectors.
  
• Networking: A chance for professionals to discuss innovations in energy extraction and resource management.
  

1. The Quebec Construction Show
   

• Location: Montreal, Quebec.
  
• Exhibitors: Leading manufacturers and service providers in the construction sector.
  
• Languages: The show is bilingual, offering both French and English language resources for attendees.
  
• Focus Areas: Residential and commercial construction, road building, and infrastructure equipment.
  

1. The BC Construction Association Trade Show
   

• Location: Vancouver, British Columbia.
  
• Exhibitors: Manufacturers of machinery, tools, and construction materials.
  
• Special Focus: Equipment for large-scale infrastructure projects, including road and bridge construction.
  
• Educational Programs: Workshops and networking sessions on project management, sustainable construction, and safety.
  

1. Access to the Latest Equipment: These shows feature the latest equipment models and technologies, allowing attendees to see innovations firsthand. For operators and fleet managers, it’s an excellent opportunity to explore new products and make informed purchasing decisions.
   
2. Networking Opportunities: These events bring together key industry players, from manufacturers and dealers to service providers and end-users. Networking at these events can lead to valuable business partnerships, collaborations, and new job opportunities.
   
3. Educational Workshops: Many trade shows offer seminars, workshops, and training programs that allow professionals to learn about the latest industry trends, technological advances, and safety practices.
   
4. Hands-On Demonstrations: At many heavy equipment shows, attendees can experience live demonstrations of machinery, giving them a closer look at how equipment operates in real-world conditions.
   
5. Stay Ahead of Industry Trends: With the construction and mining industries constantly evolving, attending trade shows is an excellent way to stay updated on trends such as automation, electric machinery, and sustainable practices.
   

Hydraulic systems are integral to the operation of most heavy machinery, enabling precise movement and control of various machine components. When hydraulic problems arise, they can quickly disrupt operations, leading to costly downtime. Understanding common hydraulic system issues, their causes, and how to troubleshoot them is vital for operators and mechanics alike. In this article, we will explore common hydraulic issues in heavy equipment, how to identify them, and steps to take for resolution.
Understanding Hydraulic Systems in Heavy Equipment
Hydraulic systems in heavy machinery work by using pressurized fluid to transfer energy and power various parts of the machine, such as the boom, bucket, or lift arms. Components such as hydraulic pumps, cylinders, valves, and hoses work together to deliver the precise movement needed for tasks such as lifting, digging, or pushing.
The hydraulic fluid, typically oil, acts as both a lubricant and a medium for energy transmission. When any component of the system fails or becomes compromised, it can cause the entire system to malfunction, affecting machine performance.
Common Hydraulic System Issues and Their Causes

1. Loss of Power or Slow Response
   • Symptoms: The machine is slow to respond, the hydraulic movements lack power, or certain components (e.g., the bucket or lift arms) struggle to move under load.
     
   • Possible Causes:
     • Low hydraulic fluid levels due to leaks or improper maintenance.
       
     • Contaminated hydraulic fluid that has lost its viscosity or contains debris.
       
     • Worn hydraulic pump or motor.
       
     • Leaking seals or valves that are preventing full system pressure.
       
   • Solution: Begin by checking fluid levels and topping them off as needed. Inspect the hydraulic fluid for contamination or signs of degradation, and replace it if necessary. If the fluid is clean and at the correct level, consider inspecting the pump, motor, and valves for wear or damage.
     
2. Hydraulic Fluid Leaks
   • Symptoms: Visible signs of fluid dripping or pooling around hydraulic hoses, cylinders, or pumps.
     
   • Possible Causes:
     • Worn-out seals, hoses, or fittings.
       
     • Loose or damaged hose connections.
       
     • Cracked hydraulic lines or components.
       
   • Solution: Inspect all hoses, seals, and fittings for visible cracks, damage, or wear. Tighten any loose connections and replace damaged components. Be sure to use high-quality replacement parts to prevent future leaks.
     
3. Erratic or Uncontrolled Movements
   • Symptoms: The machine moves unpredictably, or the hydraulic functions do not respond accurately to control inputs.
     
   • Possible Causes:
     • Faulty or sticking hydraulic valves.
       
     • Air in the hydraulic system, leading to spongy or erratic movement.
       
     • Clogged or dirty filters, restricting fluid flow.
       
   • Solution: Check the hydraulic valves for proper operation and free movement. Bleed the system to remove any air trapped in the lines, which can affect performance. Clean or replace the hydraulic filters to ensure optimal fluid flow.
     
4. Overheating Hydraulic Fluid
   • Symptoms: The hydraulic fluid temperature rises above normal operating levels, often accompanied by a noticeable decrease in system performance.
     
   • Possible Causes:
     • Insufficient or worn-out cooling system (e.g., radiator or cooler).
       
     • Excessive load or high ambient temperatures causing strain on the hydraulic system.
       
     • Contaminated or degraded hydraulic fluid with lower-than-optimal viscosity.
       
   • Solution: First, ensure that the cooling system (radiators, coolers) is working properly, clean, and free of debris. If the fluid temperature continues to rise, check the fluid viscosity and replace it if it has degraded. Avoid overloading the machine, and consider using a hydraulic fluid with higher thermal stability.
     
5. Noise in the Hydraulic System
   • Symptoms: Unusual whining, screeching, or grinding noises coming from the hydraulic components, such as the pump, motor, or valves.
     
   • Possible Causes:
     • Cavitation caused by low fluid levels or air in the system.
       
     • A worn or damaged hydraulic pump.
       
     • Lack of lubrication or degraded fluid.
       
   • Solution: Check the fluid level and bleed the system to eliminate any air pockets. Inspect the hydraulic pump and motor for wear and replace any damaged components. Regular maintenance of the hydraulic fluid and proper filtration can help prevent this issue.
     

1. Inspect the Hydraulic Fluid
   • The first step in troubleshooting hydraulic issues is always to check the hydraulic fluid. Ensure that it is at the proper level and in good condition. The fluid should be clean, with no signs of contamination or unusual color.
     
   • Action: Top off the fluid if necessary and replace it if it is dirty or degraded.
     
2. Check for Leaks
   • Leaking fluid is often the first sign of a hydraulic system issue. Inspect the entire system, including hoses, seals, pumps, and fittings, for any visible signs of leakage.
     
   • Action: Tighten any loose fittings and replace any damaged hoses or seals.
     
3. Examine the Pump and Motor
   • If the hydraulic system is slow or unresponsive, the pump or motor may be worn out or malfunctioning. Listen for unusual noises from the pump, which may indicate cavitation or internal damage.
     
   • Action: If necessary, replace the pump or motor with a new or reconditioned component.
     
4. Test the Valves and Cylinders
   • Hydraulic valves control the flow of fluid, and malfunctioning valves can cause erratic or uncontrolled movements.
     
   • Action: Test the valves for smooth operation, ensuring they are not sticking or failing to close properly. Inspect cylinders for leaks or signs of internal damage.
     
5. Check the System for Air and Contamination
   • Air in the system can cause spongy or erratic movements, and contamination can clog filters and damage components.
     
   • Action: Bleed the system to remove any trapped air, and replace the filters if they are clogged or dirty.
     

1. Change Hydraulic Fluid Regularly
   • Over time, hydraulic fluid can become contaminated or lose its effectiveness. Regular fluid changes help maintain system efficiency.
     
   • Recommendation: Change the hydraulic fluid every 1,000 to 1,500 hours of operation, depending on the manufacturer’s guidelines.
     
2. Inspect Hoses, Seals, and Fittings
   • Regularly inspect hydraulic hoses, seals, and fittings for signs of wear or damage. These components are prone to cracking, bulging, or leaking under pressure.
     
   • Recommendation: Replace any damaged hoses, seals, or fittings immediately to prevent system failure.
     
3. Monitor Temperature and Fluid Pressure
   • Keep an eye on the hydraulic fluid temperature and pressure readings. Overheating or excessive pressure can lead to system damage.
     
   • Recommendation: Install temperature and pressure gauges if not already present, and monitor them during operation.