The Midland 6yd motor grader stands as a testament to the evolution of road construction machinery. Designed for precision grading and efficient material handling, this grader has been a staple in the heavy equipment industry. Its robust design and versatile capabilities make it suitable for various applications, from road construction to maintenance projects.
Historical Development
Motor graders, also known as road graders, have a rich history dating back to the late 19th century. The Midland 6yd model emerged during a period when the demand for efficient road construction equipment was on the rise. Manufactured by Midland Machinery, a company renowned for its innovation in construction equipment, the 6yd grader was developed to meet the growing needs of the industry.
Technical Specifications
While specific details about the Midland 6yd motor grader's specifications are limited, similar models from Midland Machinery offer insights into its potential features:

• Engine Power: Typically equipped with engines ranging from 60 to 100 horsepower, providing ample power for various grading tasks.
  
• Blade Length: The 6-yard designation often refers to the blade's capacity, indicating the amount of material it can move in a single pass.
  
• Transmission: Manual transmission systems with multiple gears, allowing operators to adjust speed and power according to the task at hand.
  
• Hydraulic System: Advanced hydraulic systems for precise control of the blade and other attachments.
  
• Cab Design: Operator-friendly cabs with ergonomic controls to reduce fatigue during extended operations.
  

• Hydraulic System: Regularly check for leaks and ensure fluid levels are adequate to maintain blade responsiveness.
  
• Engine Care: Routine oil changes and air filter replacements are essential to keep the engine running smoothly.
  
• Tire Inspection: Ensure tires are properly inflated and show no signs of excessive wear, as they are crucial for traction and stability.
  
• Electrical System: Inspect wiring and connections to prevent electrical failures that could halt operations.
  

The Komatsu D31A-17 is a well-known dozer that has been widely used in construction, mining, and agriculture for its reliability and versatility. However, like all heavy equipment, the D31A-17 is not immune to issues, particularly in its transmission system. Transmission problems can significantly affect the performance and productivity of a dozer, and timely diagnosis and repairs are crucial to maintaining its efficiency.

Overview of the Komatsu D31A-17 Dozer
The Komatsu D31A-17, part of Komatsu’s D31 series, is a crawler dozer designed for medium to heavy-duty tasks. It comes with a robust engine and drivetrain designed to handle challenging terrains and heavy workloads. The dozer is equipped with a fully hydrostatic transmission system, providing smooth power delivery and better maneuverability, making it ideal for various earth-moving applications.
Despite its heavy-duty design, the transmission in the D31A-17 can encounter problems that impact performance, and understanding the root causes of these issues is essential for effective troubleshooting and repair.

Common Transmission Problems in Komatsu D31A-17

1. Transmission Slipping
   One of the most common transmission issues faced by Komatsu D31A-17 owners is transmission slipping. This can occur when the dozer fails to engage or change gears properly. Slipping usually results in a lack of power and performance issues, particularly when the dozer is under load.
   Possible Causes:
   • Low hydraulic fluid levels: Insufficient hydraulic fluid can cause the transmission to malfunction, as the transmission system relies on hydraulic power to operate effectively.
     
   • Worn transmission belts or chains: Over time, belts and chains may wear out, resulting in slippage.
     
   • Faulty transmission pump: If the transmission pump is not delivering the required hydraulic pressure, slipping can occur.
     
   • Clogged or dirty filters: Clogged filters can restrict fluid flow, leading to poor transmission performance.
     
   Solution:
   Regular fluid checks and timely replacement of hydraulic oil and filters can often resolve slipping issues. If worn parts such as belts or chains are found, replacing them will restore the transmission's functionality.
   
2. Loss of Power
   A loss of power or poor acceleration is another transmission-related issue often reported by owners of the Komatsu D31A-17. This can result in the dozer struggling to climb inclines or perform tasks that require substantial force.
   Possible Causes:
   • Hydraulic system failure: Since the transmission system is hydraulically driven, any issue in the hydraulic system, such as pump failure or low pressure, can lead to a significant loss of power.
     
   • Air in the hydraulic lines: If air enters the hydraulic lines, it can cause a loss of pressure, resulting in weak transmission performance.
     
   • Leaking seals or gaskets: Damaged seals or gaskets may allow hydraulic fluid to leak, reducing the system’s efficiency and power output.
     
   Solution:
   Ensure that the hydraulic system is functioning correctly by checking the hydraulic fluid pressure, inspecting for leaks, and replacing seals when necessary. Bleeding the hydraulic lines can help remove air and restore power.
   
3. Erratic Shifting or Gear Problems
   Erratic shifting, where the dozer struggles to engage or change gears smoothly, can be a serious issue with the transmission system. This problem often manifests as rough or jerky movements during operation.
   Possible Causes:
   • Worn or damaged transmission components: Over time, gears, clutches, and other internal components can wear out, making it difficult for the transmission to shift properly.
     
   • Incorrect hydraulic fluid: Using the wrong type or low-quality hydraulic fluid can cause shifting issues and damage internal components.
     
   • Electrical issues: The Komatsu D31A-17 has an electronically controlled transmission system, and faulty sensors or wiring can interfere with smooth shifting.
     
   Solution:
   Thoroughly inspecting and replacing worn transmission components such as gears or clutches is necessary to resolve this issue. Also, using the correct hydraulic fluid and performing routine maintenance can prevent these problems. In some cases, electrical diagnostics may be needed to identify and fix sensor or wiring issues.
   
4. Overheating Transmission
   Overheating is another problem that can affect the transmission system, especially during prolonged use or in hot operating conditions. Overheating can cause fluid breakdown, resulting in loss of performance and potential damage to the system.
   Possible Causes:
   • Insufficient cooling: The transmission system in the Komatsu D31A-17 is cooled by hydraulic fluid, and poor cooling can lead to overheating.
     
   • Overuse or heavy load: Operating the dozer under heavy loads for extended periods can lead to excessive heat buildup in the transmission system.
     
   • Clogged cooling lines or filters: Blocked cooling lines or dirty filters can prevent proper heat dissipation.
     
   Solution:
   Regularly check the cooling system, including coolant levels and airflow, to ensure proper heat management. Avoid overloading the dozer and ensure that filters and cooling lines are clean and free of debris.
   

1. Regular Fluid Changes: Change the hydraulic fluid and transmission oil at the manufacturer’s recommended intervals. Ensure that the fluid used is of the correct type and viscosity.
   
2. Inspect for Leaks: Regularly check for hydraulic leaks in the system, especially around seals and fittings. Leaks can lead to loss of pressure, causing poor transmission performance.
   
3. Filter Replacement: Clogged filters can significantly impact transmission performance. Replace hydraulic filters and transmission filters as part of routine maintenance.
   
4. Check Hydraulic Pressure: Ensure the hydraulic system is operating at the correct pressure. Low or fluctuating pressure can lead to slippage or loss of power.
   
5. Monitor Operating Conditions: Avoid pushing the machine to its limits for extended periods, especially under heavy loads or extreme conditions.
   

The Ford CL340 and Its Mechanical Heritage
The Ford CL340 skid steer was part of Ford’s compact equipment lineup during the late 1970s and early 1980s, designed for light construction, landscaping, and agricultural tasks. Built with a rugged frame and simple hydraulic systems, the CL340 was powered by a gasoline or diesel engine depending on configuration, and featured chain-driven wheels housed in sealed hubs. Though Ford eventually exited the skid steer market, the CL340 remains in use among collectors and small operators due to its mechanical simplicity and ease of repair.
Ford’s industrial equipment division was later absorbed into New Holland, and many parts for older Ford machines became difficult to source. The CL340, in particular, suffers from limited aftermarket support, especially for components like wheel bearings and hub assemblies.
Terminology Annotation
- Wheel Hub: The central component that houses the wheel bearing and connects the axle to the wheel.
- Pressed Fit: A mechanical assembly where one part is tightly inserted into another using force, requiring a hydraulic press for removal.
- Bearing Assembly: A unit containing rolling elements (balls or rollers) that reduce friction between moving parts.
- ERK43174: The original Ford part number for the bearing pre-mounted in the hub, now obsolete.
- Axle Stub: The short shaft that protrudes from the differential or chain case and supports the wheel hub.
Disassembly Challenges and Press Fit Realities
When attempting to replace the wheel bearing on a CL340, the first obstacle is removing the hub from the axle. In this case, the bearing is mounted inside the hub and the axle appears to be pressed into it. This configuration is common in older skid steers, where the bearing is seated tightly around the axle stub and retained by a snap ring or interference fit.
To proceed:

• Remove the hub from the machine and secure it in a hydraulic press
  
• Apply steady pressure to the axle stub to push it out of the bearing
  
• Use bearing pullers or split plates if the press fit is unusually tight
  
• Once the axle is removed, press out the bearing from the hub using a suitable drift or arbor
  
• Inspect the hub bore and axle for scoring or wear before reassembly
  

• Inner diameter (ID)
  
• Outer diameter (OD)
  
• Width
  
• Bearing type (e.g., tapered roller, ball bearing, double-row)
  

• Motion Industries
  
• Applied Industrial Technologies
  
• Grainger
  
• Local agricultural equipment dealers
  

• Clean all mating surfaces thoroughly
  
• Apply anti-seize or light oil to the axle stub
  
• Press the bearing into the hub evenly, avoiding cocking
  
• Use a bearing driver or press plate to prevent race distortion
  
• Reinstall the axle with proper alignment and torque
  
• Check for end play and preload if applicable
  

The Komatsu PC75 series, including models like the PC75UU and PC75R-2, are renowned for their reliability and versatility in construction and excavation tasks. However, like all machinery, they are susceptible to issues, with engine overheating being a common concern. Overheating can lead to significant engine damage if not addressed promptly. This article delves into the potential causes of overheating in the Komatsu PC75 and offers practical solutions to mitigate these issues.
Common Causes of Overheating

1. Low Coolant Levels or Leaks
   

1. Clogged Radiator Fins
   

1. Faulty Thermostat
   

1. Hydraulic System Issues
   

1. Airflow Restrictions
   

• Regular Maintenance: Adhere to the manufacturer's recommended maintenance schedule, including coolant checks, radiator cleaning, and hydraulic system inspections.
  
• Quality Fluids: Use only Komatsu-approved coolant and hydraulic fluids to ensure compatibility and optimal performance.
  
• Monitor Temperatures: Keep an eye on engine temperature gauges during operation. If the gauge consistently reads high, investigate potential causes promptly.
  
• Professional Inspections: If overheating persists despite addressing common causes, consult a professional technician for a thorough inspection and diagnosis.
  

When considering adding a scraper attachment to a tractor, one of the key factors is the tractor's horsepower. Scrapers are essential tools for leveling, grading, and digging in various construction, agricultural, and landscaping applications. But with so many different sizes and types of scrapers available, it’s important to understand which one is best suited for a 100 HP (horsepower) tractor.

What is a Scraper?
A scraper is a large earthmoving machine or attachment used to collect and remove soil or gravel from the ground. The scraper typically has a bowl (a large metal container) that can be raised and lowered, allowing it to scoop and transport material from one location to another. There are several types of scrapers, including towed scrapers, self-propelled scrapers, and tractor-mounted scrapers. For a 100 HP tractor, the most common option is a tractor-mounted scraper or a smaller towed scraper.

Factors to Consider When Choosing a Scraper for 100 HP

1. Tractor Compatibility
   A 100 HP tractor is considered a mid-range utility tractor. It has enough power to handle a variety of implements but may not be suitable for larger, heavier scrapers. The size of the scraper should match the tractor’s power, weight, and hydraulic capacity. Using a scraper too large for the tractor can result in reduced efficiency and strain on the engine, transmission, and hydraulic system.
   
2. Scraper Size
   Scraper size is often categorized by the volume of material they can carry. For a 100 HP tractor, a scraper with a capacity between 4 and 6 cubic yards is ideal. Larger scrapers require more horsepower to operate efficiently. Opting for a smaller scraper, such as a 4-yard scraper, will provide better maneuverability and efficiency, while ensuring that the tractor is not overworked.
   
3. Terrain and Job Requirements
   The type of work you plan to do will determine the kind of scraper you need. For example:
   • Light-Duty Work: If you plan on working with looser soils and on relatively flat terrain, a smaller 4 to 5 cubic yard scraper would be sufficient.
     
   • Heavy-Duty Work: For tougher conditions such as compacted or rocky soils, or if you need to move more material, opting for a 6 cubic yard scraper might be necessary. However, be cautious of using a scraper that exceeds the tractor's capabilities in tough conditions.
     
4. Hydraulic Requirements
   Most scrapers use hydraulics to lift and lower the blade or bowl. Make sure that your 100 HP tractor has the hydraulic flow and pressure required to operate the scraper effectively. Typically, a tractor in this range will have a hydraulic flow of 15 to 25 GPM (gallons per minute), which is suitable for smaller to medium-sized scrapers. However, larger scrapers or those with more complex functions may require higher hydraulic output.
   
5. Towing vs. Mounted Scrapers
   Tractor-mounted scrapers are designed to be attached directly to the back of the tractor. These are usually more compact and maneuverable but may have a smaller capacity compared to towed scrapers. Towed scrapers can be attached to a tractor with a drawbar and are often used when you need to carry more material, but they may require additional equipment like a ripper or scarifier for tougher soils.
   

1. Land Pride 3-Point Scrapers
   • Capacity: 4 cubic yards
     
   • Features: Designed for small to medium-sized tractors, this scraper is ideal for leveling and moving dirt in light-to-moderate conditions.
     
   • Benefits: Easy to maneuver, with good visibility and control.
     
   • Best For: Homeowners, landscapers, or contractors with moderate grading needs.
     
2. Handozer 6’ Hydraulic Scraper
   • Capacity: 3-4 cubic yards
     
   • Features: A compact, hydraulic scraper that’s designed to be mounted directly onto the tractor.
     
   • Benefits: Lightweight and efficient for smaller jobs like landscaping or land clearing.
     
   • Best For: Residential use or for small-scale agricultural projects.
     
3. Bergmann 2000
   • Capacity: 5 cubic yards
     
   • Features: A more robust scraper designed for heavier duty tasks but still compatible with 100 HP tractors.
     
   • Benefits: Increased efficiency and the ability to handle larger amounts of material.
     
   • Best For: Contractors who need to move significant quantities of material on flat terrain.
     
4. K-Tec 1234
   • Capacity: 6 cubic yards
     
   • Features: A high-capacity scraper that attaches to the tractor’s drawbar. It’s capable of handling more substantial earthmoving projects.
     
   • Benefits: Designed to handle tougher conditions like rock or clay.
     
   • Best For: Larger projects or when working with heavy-duty soil conditions.
     

1. For General Landscaping or Small Construction Projects:
   A 4 to 5 cubic yard scraper will work best. It allows for efficient material movement without overloading the tractor.
   
2. For Heavy-Duty or Large-Scale Grading:
   If you plan on using the scraper for large-scale earthmoving or difficult terrains, a 6 cubic yard scraper might be the best option, but be mindful of the tractor’s load capacity.
   
3. For Rock or Tough Conditions:
   If you need to dig through rock, clay, or other compacted materials, select a scraper with the necessary strength and durability for the job. In this case, a scraper with a 6 cubic yard capacity is recommended but be cautious of the power demands on the tractor.
   

The Caterpillar 944A Wheel Loader stands as a testament to Caterpillar Inc.'s commitment to innovation and durability in the realm of heavy machinery. Introduced in the late 1950s, the 944A was part of Caterpillar's initial foray into wheeled loaders, a segment that would become a cornerstone of their construction equipment lineup. This article delves into the history, specifications, and enduring legacy of the 944A.
Historical Context and Development
Caterpillar's journey into the wheel loader market began with the 944 series, which was first produced in 1958 in the United States and later in the United Kingdom starting in 1961. The 944A, an evolution of the original model, featured several enhancements that improved its performance and versatility on the job site. The introduction of the 944A marked a significant shift from the earlier Traxcavator models, which were equipped with tracks, to a more agile wheeled design that offered greater mobility and efficiency.
Key Specifications
The Caterpillar 944A Wheel Loader boasts several noteworthy specifications:

• Engine: Powered by the Caterpillar D330T, a 4-cylinder, inline diesel engine delivering 105 horsepower.
  
• Transmission: Equipped with a 4-speed transmission, allowing for versatile speed control.
  
• Drive System: Features a 4x4 drive system, ensuring optimal traction and performance across various terrains.
  
• Steering: Incorporates rear-wheel steering, enhancing maneuverability in confined spaces.
  
• Bucket Capacity: Standard bucket capacity ranges from 1.53 to 3.1 cubic meters, depending on the configuration.
  
• Dimensions:
  • Length: 18 ft 8 in
    
  • Width: 8 ft 0 in
    
  • Height: 9 ft 7 in
    
  • Operating Weight: Approximately 23,400 lbs
    

Understanding Stockpile Behavior and Risks
Working with large material stockpiles—whether compost, mulch, wood waste, or aggregate—requires more than just horsepower. A pile exceeding 40 or 60 feet in height presents challenges in stability, access, and material segregation. Operators must avoid undercutting the pile, which can lead to dangerous collapses, equipment damage, or injury. Material density, moisture content, and how the pile was built all influence how it should be approached.
Conical piles formed by stackers tend to segregate material by size and weight. Coarse particles land farther from the stacker’s discharge point, while fines settle near the center. This uneven distribution affects how the pile breaks down and how it should be loaded.
Terminology Annotation
- Undercutting: Removing material from the base of a pile without relieving the upper mass, creating an overhang prone to collapse.
- Drag Down: A technique where the loader drives up the pile face, lowers the bucket, and backs down to pull material safely.
- Segregation: The separation of material types within a pile due to differences in size, weight, or moisture.
- Wing Collapse: The uncontrolled fall of material from the sides of a pile, often triggered by undermining or vibration.
- Ramp Pile: A stockpile built using loaders or dozers, often with compacted access paths and less segregation than stacker-built piles.
Safe Loading Techniques for Tall Piles
To prevent undermining and maintain control, operators should:

• Avoid digging directly into the center of the pile
  
• Keep the wings pushed in to prevent lateral collapse
  
• Use the drag down method to relieve pressure from the upper face
  
• Work in layers, gradually reducing the pile height from the top down
  
• Monitor slope angles and avoid creating vertical faces
  

• Use wide buckets for better surface contact
  
• Keep rear wheels on the ground during drag down to maintain stability
  
• Avoid spinning tires or aggressive digging that can destabilize the pile
  
• Use back dragging to smooth the face and prevent sudden collapses
  

• Begin work at the edges and avoid deep cuts into the base
  
• Use the loader’s weight to compress and shear material during drag down
  
• Allow time for gravity to settle the pile after each pass
  
• Avoid working alone when undermining is likely
  

When it comes to maintaining heavy machinery like the Ford backhoe, one crucial aspect of maintenance is the condition of the bucket teeth. Over time, these teeth wear down due to constant contact with rough materials like soil, rock, and gravel. This article explores the process of removing and replacing the bucket teeth on a Ford backhoe, a common maintenance task for many operators.

Understanding Bucket Teeth
Bucket teeth are vital components attached to the front end of a backhoe or excavator’s digging bucket. These teeth are responsible for breaking up and scooping materials during excavation. As they are exposed to harsh working conditions, they gradually wear down and need replacement to maintain efficient performance. Bucket teeth come in various shapes and sizes, tailored to the type of work the machine is being used for, such as digging, grading, or trenching.

Signs That It's Time to Replace Bucket Teeth
The bucket teeth on a Ford backhoe typically show signs of wear after extensive use. Here are some indicators that it’s time to replace them:

1. Visible Wear and Tear: If the teeth appear worn down, chipped, or cracked, they will not perform effectively.
   
2. Decreased Efficiency: If the backhoe takes longer to dig or the performance has noticeably decreased, it may be due to worn-out bucket teeth.
   
3. Unusual Sounds: If you hear grinding or other unusual noises during operation, it might indicate that the teeth are no longer functioning properly.
   
4. Uneven Digging: Worn teeth can cause uneven digging or difficulty in penetrating certain materials, indicating that replacement is necessary.
   

• Increased Efficiency: New, sharp bucket teeth help the machine dig faster and more effectively, improving overall productivity.
  
• Reduced Stress on the Backhoe: Worn teeth force the machine to exert more energy to dig, leading to increased wear on other components.
  
• Improved Safety: Dull or broken teeth can cause the machine to behave unpredictably, increasing the risk of accidents.
  
• Cost Savings: Replacing teeth regularly reduces the likelihood of damage to the entire bucket or other parts of the backhoe, which can be much more costly to repair.
  

1. Preparation:
   Before beginning, gather the necessary tools:
   • Bucket tooth removal tool
     
   • Hammer or sledgehammer
     
   • Wrench (if applicable)
     
   • Replacement teeth (make sure they are compatible with your backhoe model)
     
   Wear appropriate safety gear, including gloves and eye protection.
   
2. Secure the Backhoe:
   Park the backhoe on a stable surface and lower the bucket to the ground. Engage the parking brake to ensure the machine does not move during the procedure.
   
3. Remove the Old Teeth:
   Most Ford backhoes use a locking mechanism, such as a pin, to secure the bucket teeth in place. Use the wrench or removal tool to detach any pins or bolts holding the teeth. Once the pins are removed, use a hammer to tap the teeth out of their socket if they are stuck.
   
4. Inspect the Bucket:
   Before installing the new teeth, check the bucket for any signs of wear, damage, or cracks. It’s essential to address any bucket damage before replacing the teeth, as it could affect the performance and longevity of the new teeth.
   
5. Install the New Teeth:
   Slide the new bucket teeth into the sockets, ensuring they align correctly. Insert the securing pins or bolts and tighten them securely. Be sure to check the teeth alignment and ensure that they are firmly locked in place.
   
6. Test the Backhoe:
   Once the new teeth are installed, test the backhoe to ensure everything is functioning correctly. Perform a few test digs to make sure the teeth are properly seated and the machine is operating efficiently.
   

• Standard Teeth: Best for general digging and most soils.
  
• Heavy-Duty Teeth: Ideal for tougher materials like rock or compacted soil.
  
• Spade Teeth: Excellent for digging in fine materials or when precision is important.
  
• Rock Teeth: Designed for rock excavation and highly abrasive environments.
  

1. Stuck or Seized Teeth:
   Sometimes the bucket teeth may be difficult to remove due to corrosion or excessive wear. In these cases, applying penetrating oil or using a heat source can help loosen the teeth before attempting removal.
   
2. Improper Alignment:
   After installation, if the new teeth are misaligned, the backhoe may perform inefficiently. Double-check the alignment before securing the pins.
   
3. Choosing Incorrect Teeth:
   Installing the wrong type of teeth can cause the machine to underperform or lead to premature wear. Ensure you select the correct teeth based on the application and material conditions.
   

The Dynahoe Legacy and Model Overview
Dynahoe was a brand of heavy-duty backhoe loaders originally manufactured by the Warner & Swasey Company, later acquired by Bucyrus-Erie. The Dynahoe 190-2, introduced in the 1970s, was built for industrial-scale excavation and land clearing. Unlike compact backhoes, the 190-2 was a full-sized machine weighing approximately 10 tons, powered by a Detroit Diesel 3-53 engine. Its rugged frame, oversized hydraulic cylinders, and deep digging capability made it popular among municipalities, contractors, and landowners with serious earthmoving needs.
Though production ceased decades ago, Dynahoes remain in use thanks to their overbuilt design and mechanical simplicity. Their cult following among vintage equipment enthusiasts has kept parts circulating through salvage yards, online groups, and private collections.
Terminology Annotation
- Detroit Diesel 3-53: A 3-cylinder, 2-stroke diesel engine known for its durability and distinctive sound.
- Hydraulic Cylinder Repack: The process of replacing internal seals and wear rings to restore pressure and eliminate leaks.
- Starter Solenoid: An electrical relay that engages the starter motor when the ignition key is turned.
- Fuel Canister Filter: A cartridge-style fuel filter used in older diesel systems, often requiring manual priming.
- Hydraulic Snowcone: A humorous term for a large spill of hydraulic fluid, often caused by a burst hose under pressure.
Initial Ownership Experience and Challenges
One new owner acquired two Dynahoe 190-2 machines—one primary unit and one spare. Both were running upon delivery, though the spare had leaky hydraulic pistons. On a cold day, the main machine refused to start, while the spare fired up after coaxing. After a few minutes of smooth operation, the spare stalled with the bucket suspended over a rock wall, requiring creative propping with a log.
Suspecting bad fuel, the owner began troubleshooting. Meanwhile, the main machine was started and tested, only to blow a hydraulic hose while lifting the front end. This resulted in a large fluid spill and two disabled machines in the yard. The experience highlighted the reality of owning vintage equipment: repairs begin sooner than expected.
Fuel System Troubleshooting and Cold Weather Tips
Older diesel machines like the Dynahoe 190-2 are sensitive to fuel quality, especially after long storage. Common issues include:

• Water contamination in the tank
  
• Algae growth in diesel fuel
  
• Air intrusion from low tank levels during transport
  
• Plugged fuel filters from sediment or microbial buildup
  

• Drain and inspect fuel filters (both low and high pressure)
  
• Check for water in the filter bowls
  
• Prime the system manually until fuel overflows at the bleed screw
  
• Inspect the fuel tank for rust flakes or debris blocking the feed line
  
• Use fuel additives like biocides or anti-gel formulas in cold weather
  

• Replacing hoses with modern hydraulic-rated lines (avoid automotive fuel hose)
  
• Repacking cylinders with new seals (requires heavy-duty tools or professional help)
  
• Keeping spare hoses and fittings on hand for field repairs
  
• Using AW46 hydraulic fluid, available in bulk at retailers like Costco
  

• Clean all terminals and apply dielectric grease
  
• Replace cracked wires and brittle insulation
  
• Keep spare solenoids and relays in the cab
  

The John Deere D-Series skid steers represent a significant advancement in compact construction equipment, blending power, efficiency, and operator comfort. Introduced in 2010, these machines marked a pivotal shift in John Deere's approach to skid steer design, emphasizing customer-driven innovations and enhanced performance.
Historical Development
John Deere's journey into the skid steer market began in the early 1970s with the introduction of the JD24 model. Over the decades, the company refined its designs, incorporating features like vertical-lift booms and improved hydraulic systems. The D-Series, launched in 2010, was a culmination of these efforts, integrating feedback from operators to create a more user-friendly and efficient machine.
Key Features and Specifications
The D-Series lineup includes models such as the 318D, 320D, 326D, 328D, and 332D. These machines are powered by John Deere's PowerTech E diesel engines, meeting Tier 3 and Interim Tier 4 emissions standards. Notable specifications include:

• Horsepower: Ranging from 58 to 89 hp, depending on the model.
  
• Operating Capacity: Up to 3,350 lbs, offering versatility for various tasks.
  
• Hydraulic Flow: Standard flow up to 38.1 gpm, with high-flow options available.
  
• Lift Height: Patented vertical-lift boom design provides exceptional reach and dump height.
  
• Cab Design: Enhanced visibility and increased headroom for improved operator comfort.