ID：1826055

• Brand: Sumitomo
  
• Model: SH200-3
  
• Manufacturing Year: 2004
  
• Hours: 18,000 hours
  
• Location: Hunan - Changsha City
  

• Brand: Sumitomo
  
• Model: SH200-3
  
• Year of Manufacture: 2004
  
• Operating Hours: 18,000 hours
  
• Location: Hunan, Changsha City
  

• Engine Model: Isuzu ISUZU BB-6BG1T
  
• Rated Power: 103 kW @ 1950 rpm
  
• Cooling System: Water-cooled
  
• Cylinders: 6
  
• Displacement: 6.494 L
  

• Swing Speed: 11.9 rpm
  
• Climbing Ability: 70% (35°)
  
• Bucket Digging Force: 130 kN
  
• Arm Digging Force: 93.5 kN
  
• Travel Speed: 3.3/5.5 km/h
  

• Main Pump Type: Triple-variable displacement piston pump + gear pump
  
• Main Relief Pressure: 34.3 MPa
  
• Swing Motor Type: Fixed displacement piston pump
  
• Travel Motor Type: Two variable displacement piston pumps
  

• Fuel Tank Capacity: 340 L
  
• Hydraulic Oil Capacity: 206 L
  

• Transport Length: 9390 mm
  
• Transport Width: 2800 mm
  
• Transport Height: 2910 mm
  
• Minimum Ground Clearance: 460 mm
  
• Bucket Radius: 3620 mm
  
• Rear Swing Radius: 2750 mm
  
• Track Length: 4180 mm
  
• Track Gauge: 2200 mm
  
• Track Plate Width: 600 mm
  
• Total Track Width: 2800 mm
  

• Max Digging Radius: 9960 mm
  
• Max Digging Depth: 6710 mm
  
• Max Digging Height: 9650 mm
  
• Max Unloading Height: 6840 mm
  
• Max Vertical Digging Depth: 6080 mm
  

                                       

ID：1826040

• Brand: Shandong Lingong
  
• Model: E6210F
  
• Year of Manufacture: 2019
  
• Hours: 7000 hours
  
• Location: Anhui - Chuzhou City
  

• Brand: Shandong Lingong
  
• Model: E6210F
  
• Year of Manufacture: 2019
  
• Hours: 7000 hours
  
• Location: Anhui - Chuzhou City
  
• Operating Weight: 21,250 kg
  
• Bucket Capacity: 0.9 m³ (range: 0.8–1.2 m³)
  
• Power: 123 kW
  
• Bucket Type: Backhoe
  

• Swing Speed: 0-12.1 rpm
  
• Bucket Digging Force: 147.1 kN
  
• Arm Digging Force: 147.1 kN
  
• Travel Speed: 3.5 km/h (low), 5.7 km/h (high)
  

• Transport Length: 9,700 mm
  
• Transport Width: 2,800 mm
  
• Transport Height: 2,940 mm
  

• Maximum Digging Radius: 9,940 mm
  
• Maximum Digging Depth: 6,730 mm
  
• Maximum Unloading Height: 6,650 mm
  

• Construction: Digging foundations, lifting construction materials, trenching
  
• Mining: Excavating ore, loading and transporting material
  
• Demolition: Breaking down structures and handling debris
  
• Landscaping: Digging for pools, ponds, and other landscaping features
  

                               

ID：1823230

• Brand: Hitachi
  
• Model: ZX200-5G
  
• Year of Manufacture: 2014
  
• Hours: 12,000 hours
  
• Location: Jiangsu - Yancheng
  

• Weight: 20 tons
  
• Operating weight: 20,300 kg
  
• Bucket capacity: 0.91 m³
  
• Boom length: 2.91 m
  
• Power system: Traditional power setup, combining robust construction and power efficiency
  
• Manufacturer: Joint venture/Imported
  
• Bucket type: Backhoe
  

• Engine power: 125 kW at 2100 rpm
  
• Cooling type: Water-cooled
  
• Cylinder size: 105 mm x 125 mm
  
• Maximum torque: 637 N·m
  
• Displacement: 6.494 L
  
• Engine type: 4-stroke, water-cooled, direct injection, turbocharged with intercooler
  

• Ground pressure: 45 kPa
  
• Swing speed: 13.5 rpm
  
• Climbing ability: 70% (35°)
  
• Bucket digging force: 158 kN
  
• Arm digging force: 114 kN
  
• Max traction force: 203 kN
  
• Travel speed: 5.5 km/h (high), 3.5 km/h (low)
  
• Swing torque: 68 Nm
  

• Swing hydraulic motor type: Single disc-type axial piston motor
  
• Travel hydraulic motor type: Two variable disc-type axial piston motors
  
• Main pump maximum flow: 2 x 212 L/min
  
• Hydraulic pressure: 34.3 MPa
  
• Hydraulic oil tank capacity: 240 L
  
• Pilot oil circuit pressure: 3.9 MPa
  

• Transport length: 9,660 mm
  
• Transport width: 2,860 mm
  
• Transport height: 3,010 mm (arm height)
  
• Ground clearance: 1,030 mm
  
• Maximum digging radius: 9,920 mm
  
• Maximum digging depth: 6,670 mm
  
• Max unloading height: 7,180 mm
  

                               

ID：1826033

• Brand: Shantui
  
• Model: SE210W
  
• Year of Manufacture: 2021
  
• Hours: 4500 hours
  
• Location: Anhui - Chuzhou
  

• Brand: Shantui
  
• Model: SE210W
  
• Year of Manufacture: 2021
  
• Hours: 4500 hours
  
• Location: Anhui - Chuzhou
  
• Operating Weight: 20,500 kg
  
• Bucket Capacity: 0.9 m³
  
• Power Type: Conventional hydraulic
  
• Bucket Type: Backhoe
  

• Ground Pressure: 45 KPa
  
• Swing Speed: 11.5 rpm
  
• Gradeability: 70% (35°)
  
• Bucket Digging Force: 115–135 kN
  
• Arm Digging Force: 92.5–99 kN
  
• Max Traction Force: 201 kN
  
• Travel Speed: 3/5 km/h
  

• Main Pump Flow: 2 × 218 L/min
  
• Pump Type: Axial piston variable pump
  

• Fuel Tank: 340 L
  
• Hydraulic Tank: 250 L
  
• Engine Oil Change Volume: 24 L
  
• Coolant: 25 L
  
• Hydraulic System Capacity: 420 L
  

• Transport Length: 9543 mm
  
• Transport Width: 2800 mm
  
• Transport Height: 2977 mm
  
• Counterweight Ground Clearance: 1120 mm
  
• Minimum Ground Clearance: 470 mm
  
• Track Length: 4160 mm
  
• Track Gauge: 2200 mm
  
• Track Shoe Width: 600 mm
  
• Total Track Width: 2800 mm
  

• Maximum Digging Radius: 9860 mm
  
• Maximum Digging Depth: 6541 mm
  
• Maximum Digging Height: 10029 mm
  
• Maximum Dumping Height: 7132 mm
  
• Maximum Vertical Digging Depth: 5985 mm
  
• Maximum Reach at Ground Level: 9673 mm
  
• Effective Digging Depth: 6541 mm
  

                               

ID：1826027

• Brand: Caterpillar
  
• Model: 330D2L Hydraulic
  
• Year of Manufacture: 2018
  
• Hours: 12,000 hours
  
• Location: Chongqing - Chongqing City
  

• Brand: Caterpillar
  
• Model: 330D2L Hydraulic Excavator
  
• Year of Manufacture: 2018
  
• Operating Hours: 12,000 hours
  
• Location: Chongqing - Chongqing City
  

• Weight: The excavator has a working weight ranging from 28,955 kg to 30,115 kg, making it a heavy-duty machine suited for large-scale projects.
  
• Bucket Capacity: It has a 1.54 m³ bucket that ensures high productivity in digging and material handling.
  
• Arm and Boom Length: The boom length is 6150 mm, and the stick length is 3200 mm, providing extended reach for digging and material handling.
  
• Power: The engine uses traditional power with a Cat C7.1 ACERT engine, rated at 156 kW at 1800 rpm.
  

• Engine Type: Electric control direct injection (electronic control, direct injection)
  
• Displacement: 7.01 liters
  
• Bore × Stroke: 105 x 135 mm
  
• Maximum Torque: 900 Nm
  
• Cylinders: 6 cylinders
  
• Rated Power: 156 kW at 1800 rpm
  

• Ground Pressure: The ground pressure is 55.4 kPa, allowing the machine to operate on various types of terrains, even those with soft ground conditions.
  
• Swing Speed: The machine has a rotation speed of 9.6 rpm, enabling efficient work in confined spaces.
  
• Digging Force:
  • Bucket Digging Force: 179 kN
    
  • Arm Digging Force: 126 kN
    
• Max Traction Force: 248 kN, which ensures that the machine can move large amounts of material effectively.
  
• Travel Speed: The maximum travel speed is 5.3 km/h with a slow speed of 2.9 km/h for controlled movement.
  

• Main Relief Valve Pressure: 35 MPa
  
• Main Pump Flow Rate: 254 L/min × 2
  
• Travel Hydraulic Circuit Pressure: 35 MPa
  
• Swing Hydraulic Circuit Pressure: 27.5 MPa
  
• Pilot Oil Circuit Pressure: 3.92 MPa
  
• Pilot Pump Flow: 23.1 L/min
  
• Bucket Cylinder Size: 135 x 1156 mm
  
• Arm Cylinder Size: 150 x 1646 mm
  
• Boom Cylinder Size: 140 x 1407 mm
  

• Fuel Tank Capacity: 520 L
  
• Hydraulic Oil Capacity: 257 L
  
• Engine Oil Change Capacity: 22 L
  
• Coolant Capacity: 31 L
  
• Hydraulic System Capacity: 310 L
  

• Overall Transport Length: 10,360 mm
  
• Overall Transport Width: 3190 mm
  
• Overall Transport Height: 3330 mm
  
• Cab Height: 3040 mm
  
• Ground Clearance: 480 mm
  
• Rear Swing Radius: 3080 mm
  
• Track Length: 4860 mm
  
• Track Gauge: 2590 mm
  

• Maximum Digging Depth: 7,290 mm
  
• Maximum Digging Height: 10,720 mm
  
• Maximum Dumping Height: 6,900 mm
  
• Maximum Vertical Digging Depth: 5,660 mm
  
• Maximum Reach at Ground Level: 10,720 mm
  
• Maximum Effective Digging Depth: 7,130 mm
  

               

ID：1826024

• Brand: XCMG
  
• Model: XE200DA
  
• Year of Manufacture: 2018
  
• Operating Hours: 8100 hours
  
• Location: Jiangxi - Ji'an
  

                                       

ID：1826014

• Brand: Caterpillar
  
• Model: 336D Hydraulic
  
• Year of Manufacture: 2009
  
• Hours: 13,000 hours
  
• Location: Qinzhou, Guangxi
  

• Brand: Caterpillar
  
• Model: 336D Hydraulic
  
• Year of Manufacture: 2009
  
• Hours: 13,000 hours
  
• Location: Qinzhou, Guangxi
  

• Weight & Dimensions
  • Weight (tons): 36
    
  • Operating weight (kg): 33,750
    
  • Bucket capacity (m³): 1.4
    
  • Boom length (mm): 6,500
    
  • Arm length (mm): 3,200
    
  • Origin: Japan/Xuzhou
    
  • Power type: Conventional
    
  • Manufacturer: Joint venture/imported
    
  • Bucket type: Backhoe
    
• Power System
  • Engine model: C9ACERT
    
  • Rated power (kw/rpm): 200/1900
    
  • Cooling system: Water-cooled
    
  • Bore x stroke (mm): 110×127
    
  • Number of cylinders: 6
    
  • Displacement (L): 8.8
    
• Performance
  • Swing speed (rpm): 10
    
  • Gradeability (%): 70/35°
    
  • Bucket digging force (kN): 222
    
  • Arm digging force (kN): 146
    
  • Travel speed (km/h): 3/5
    
• Hydraulic System
  • Main overflow setting pressure (Mpa): 3.5
    
  • Main pump max flow (l/min): 280
    
  • Travel hydraulic circuit (Mpa): 3.5
    
  • Swing hydraulic circuit (Mpa): 2.8
    
  • Hydraulic breaker line standard: No
    
  • Working hydraulic circuit (Mpa): 3.5
    
  • Pilot oil circuit (Mpa): 3.9
    
  • Bucket cylinder (pcs x diameter x stroke mm): 150×1,151
    
  • Arm cylinder (pcs x diameter x stroke mm): 170×1,738
    
  • Boom cylinder (pcs x diameter x stroke mm): 150×1,440
    
• Fluid Capacities
  • Fuel tank (L): 620
    
  • Hydraulic oil tank (L): 175
    
  • Engine oil change volume (L): 40
    
  • Coolant (L): 40
    
  • Hydraulic system (L): 410 (including tank)
    
• Main Dimensions
  • Transport length (mm): 11,150
    
  • Transport width (mm): 3,190
    
  • Transport height (mm): 3,340
    
  • Full cab height (mm): 3,140
    
  • Counterweight ground clearance (mm): 1,220
    
  • Minimum ground clearance (mm): 450
    
  • Rear swing radius (mm): 3,500
    
  • Track length (mm): 4,590
    
  • Track gauge (mm): 2,590
    
  • Track width (mm): 600
    
  • Total track width (mm): 3,190
    
  • Track contact length (mm): 3,610
    
• Working Range
  • Maximum digging depth (mm): 7,390
    
  • Maximum digging height (mm): 10,240
    
  • Maximum unloading height (mm): 7,200
    
  • Maximum vertical digging depth (mm): 5,830
    
  • Bulldozer lift or push depth (mm): No bulldozer
    
  • Bulldozer width x height (mm): No bulldozer
    
  • Maximum digging radius at stop (mm): 10,920
    
  • Maximum effective digging depth (mm): 7,230
    

Heavy equipment plays a pivotal role in industries such as construction, mining, and agriculture. However, these machines are susceptible to various failures that can disrupt operations and incur significant costs. This article delves into common heavy equipment failures, their causes, and effective maintenance strategies to mitigate these issues.
1. Engine Malfunctions
Engine malfunctions are among the most frequent issues encountered with heavy equipment. Symptoms may include unusual noises, smoke emissions, or a complete loss of power. These problems can arise from several factors:

• Fuel Contamination: Impurities in fuel can clog filters and injectors, leading to engine inefficiency or failure.
  
• Inadequate Lubrication: Insufficient lubrication can cause excessive wear on engine components, resulting in overheating and potential breakdowns.
  
• Wear and Tear: Over time, engine components naturally degrade, leading to performance issues.
  

• Regularly monitor fuel quality and replace filters as needed.
  
• Maintain proper oil levels and change oil at recommended intervals.
  
• Conduct routine engine inspections to identify early signs of wear.
  

• Fluid Contamination: Dirt, water, or metal particles can degrade hydraulic fluid, leading to component wear and system failure.
  
• Air Entrapment: Air bubbles in the hydraulic fluid can cause erratic movements and reduced system efficiency.
  

• Regularly checking and replacing hydraulic filters.
  
• Ensuring proper fluid levels and using the correct type of hydraulic fluid.
  
• Inspecting hoses and connections for leaks or damage.
  

• Battery Failures: Dead or corroded batteries can prevent equipment from starting.
  
• Wiring Issues: Damaged or frayed wires can lead to short circuits or loss of power.
  
• Sensor Malfunctions: Faulty sensors can provide incorrect data, affecting machine performance.
  

• Inspect batteries for corrosion and ensure proper charging.
  
• Regularly check wiring for signs of wear or damage.
  
• Test sensors and replace them if they malfunction.
  

• Track Misalignment: Can cause uneven wear and potential damage to other components.
  
• Roller Wear: Worn rollers can lead to track derailment or uneven movement.
  
• Sprocket Damage: Damaged sprockets can affect track tension and machine stability.
  

• Regularly inspecting undercarriage components for wear or damage.
  
• Ensuring proper track tension and alignment.
  
• Replacing worn components promptly to prevent further damage.
  

• Cracks in Frames: Can compromise the integrity of the machine.
  
• Wear on Load-Bearing Components: Such as pins and bushings, can lead to misalignment or failure.
  

• Conduct thorough inspections of load-bearing components.
  
• Address any signs of wear or damage immediately.
  
• Implement load limits to prevent overloading machinery.
  

• Scheduled Inspections: Regularly inspect equipment based on manufacturer recommendations and usage patterns.
  
• Operator Training: Educate operators on proper equipment use and early detection of potential issues.
  
• Record Keeping: Maintain detailed logs of maintenance activities to track performance and identify recurring problems.
  
• Use of Technology: Employ diagnostic tools and software to monitor equipment health and predict potential failures.
  

The E15 CA428 is part of a specialized series of compact machinery that has carved a niche in the construction and landscaping sectors. As a versatile mini-excavator, it serves in a variety of applications that demand precision, power, and reliability. This article will examine the model's features, performance, maintenance considerations, and more, providing a comprehensive understanding of what makes the E15 CA428 a reliable choice for operators.

Introduction to the E15 CA428
The E15 CA428 is a compact excavator designed to combine performance with versatility, making it ideal for tight job sites where larger equipment may not fit. Compact excavators like the E15 CA428 are favored in urban environments and smaller construction sites where maneuverability is just as important as raw power.
Manufactured by the renowned equipment company, the E15 CA428 is engineered to deliver outstanding hydraulic performance, excellent fuel efficiency, and a low operating cost, which makes it suitable for long-term use without compromising on productivity. With the evolving demands in the construction industry, machines like the E15 CA428 are becoming integral to various tasks, from digging and trenching to landscaping and demolition.

Key Features of the E15 CA428

1. Size and Design:
   The compact size of the E15 CA428 is one of its defining features. It boasts a small operational footprint, allowing it to work in confined spaces such as narrow lanes, urban areas, and indoor sites. Despite its small size, it does not sacrifice lifting and digging capacity. Its design prioritizes easy transport and storage without losing operational efficiency.
   
2. Hydraulic System:
   The hydraulic system in the E15 CA428 is a key component that sets it apart from other mini-excavators. With advanced hydraulics, the machine provides precise control over digging operations, allowing for smooth operation even in challenging conditions. This also aids in reducing operator fatigue, enhancing productivity.
   
3. Engine Power and Performance:
   Powered by a reliable diesel engine, the E15 CA428 strikes a balance between power and fuel economy. The engine is designed to meet emissions standards while providing sufficient horsepower to execute a wide range of tasks. Whether it's digging, lifting, or material handling, the engine ensures that operators have the power they need to complete jobs on time.
   
4. Operator Comfort:
   Comfort is paramount for operators, particularly during long working hours. The E15 CA428 features an ergonomic cabin with intuitive controls, clear visibility, and reduced noise levels. The cabin's design includes an adjustable seat and user-friendly joystick controls, making it suitable for both experienced operators and beginners.
   
5. Versatile Attachments:
   Like many modern compact excavators, the E15 CA428 can be equipped with a variety of attachments, including buckets, augers, and breakers. This flexibility allows the machine to perform a broad range of tasks with ease, from excavation and grading to demolition and trenching. The ability to change attachments quickly further increases the utility of the machine, making it adaptable to a variety of job site requirements.
   

1. Regular Fluid Checks:
   Checking engine oil, hydraulic fluid, and coolant levels should be done regularly. Low fluid levels can lead to poor machine performance and damage over time. It is essential to replace fluids according to the manufacturer's recommendations to avoid excessive wear on critical engine and hydraulic components.
   
2. Filter Replacements:
   Regularly changing air filters, hydraulic filters, and fuel filters is essential to maintaining the E15 CA428’s efficiency. Clogged filters can restrict airflow or fluid flow, leading to increased fuel consumption or a reduction in hydraulic performance.
   
3. Inspecting the Undercarriage:
   The undercarriage of the E15 CA428, including its tracks, rollers, and sprockets, needs to be regularly inspected for signs of wear. Proper tensioning of the tracks and cleaning of debris can prevent premature damage and ensure that the excavator operates smoothly.
   
4. Greasing Joints and Bearings:
   Greasing is vital to prevent friction and corrosion in moving parts. Joints and bearings must be lubricated regularly to avoid seizing up, which can cause expensive repairs or downtime.
   
5. Engine Maintenance:
   The engine should be checked for leaks, overheating, or irregular noises. Periodic servicing, including valve clearance checks and fuel system maintenance, will ensure the engine remains efficient and reliable.
   

1. Landscaping:
   The E15 CA428’s small size and powerful hydraulics make it a great tool for landscaping jobs. Whether it’s digging trenches for irrigation, moving soil, or grading land, the machine’s flexibility and precision make it a valuable asset.
   
2. Trenching and Excavation:
   The E15 CA428 is often used in trenching and excavation projects where space is limited. Its digging depth and reach are perfect for small to medium-sized trenching tasks, such as laying pipes or cables in confined spaces.
   
3. Demolition:
   Equipped with the right attachments, the E15 CA428 is capable of light demolition work. It can break down small structures, remove debris, or handle material handling tasks.
   
4. Material Handling:
   The E15 CA428 can also be fitted with materials handling attachments to help with lifting and moving heavy materials on construction sites. Whether it’s moving gravel or transporting bricks, the excavator’s flexibility is valuable in such tasks.
   

1. Hydraulic System Overheating:
   Overuse or improper maintenance of the hydraulic system can lead to overheating. Operators can mitigate this by keeping the hydraulic fluid levels consistent and avoiding overloading the machine during extended use.
   
2. Track Wear and Tear:
   Tracks on compact excavators like the E15 CA428 can wear quickly, especially on uneven terrain. Regular inspection and maintenance of the undercarriage are essential to prevent costly repairs. Additionally, using the correct track tension is crucial to extend the lifespan of the tracks.
   
3. Limited Lifting Capacity:
   While compact excavators are known for their versatility, they do have limitations in terms of lifting capacity compared to larger machines. For jobs requiring heavy lifting, operators may need to use additional machinery to support the E15 CA428.
   

The Need for Reliable Dismantlers in Australia’s East Coast
In the forestry, earthmoving, and civil construction sectors across Queensland and New South Wales, aging excavators like the Komatsu PC200-6 remain in active service. These machines, known for their durability and straightforward hydraulics, often require component-level repairs rather than full replacements. When critical assemblies such as the idler group fail, operators turn to dismantlers—also known as wreckers—for used OEM parts that are both cost-effective and field-tested.
Brisbane and the Gold Coast serve as key hubs for equipment salvage, with several dismantlers offering parts from retired Komatsu, Hitachi, and Caterpillar units. Sydney also hosts a handful of specialized yards, though freight costs and lead times may vary. For operators seeking a complete idler assembly—including the yoke, idler wheel, and track tensioner spring—availability depends on model compatibility and inventory turnover.
Terminology Annotation
- Idler Assembly: A front track component that guides the track chain and maintains tension via a spring-loaded mechanism.
- Yoke: The structural bracket that holds the idler wheel and connects to the track frame.
- Track Tensioner: A hydraulic or spring-loaded device that pushes the idler forward to maintain proper track tension.
- Dismantler (Wrecker): A business that salvages parts from decommissioned heavy equipment for resale.
- PC200-6: A mid-size Komatsu excavator model produced in the 1990s, widely used in construction and mining.
Common Failures in the Idler Group
The idler wheel on a PC200-6 can become loose or misaligned due to internal wear, broken springs, or missing spacers. In one case, the wheel was pushed back against the yoke, revealing a large gap in the hub with no visible bearings or shims. This suggests that either the internal rollers had disintegrated or the assembly was missing critical components.
The tensioner spring, which absorbs shock and maintains track alignment, was also found broken near its end. Without proper tension, the track can derail or cause excessive wear on the sprockets and rollers.
Identifying Compatible Assemblies Across Models
Komatsu often shares component designs across multiple excavator models. For example, the idler assembly used in the PC200-6 may be compatible with certain PC210 or PC220 variants, depending on year and regional configuration. Dismantlers typically cross-reference part numbers and physical dimensions to confirm fitment.
Operators should provide:

• Serial number of the excavator
  
• Part number (if available)
  
• Photos or measurements of the damaged assembly
  
• Notes on hydraulic vs mechanical tensioning systems
  

• Contact multiple dismantlers with detailed part requests
  
• Ask about warranty or return policies for used assemblies
  
• Confirm whether parts are sold assembled or as individual components
  
• Inquire about freight costs and delivery timelines
  

• Hydraulic jack or track press for tensioner compression
  
• Torque wrench for yoke bolts
  
• Anti-seize compound on mounting threads
  
• Grease gun for idler bearings (if applicable)
  
• Inspection mirror for spring seating verification