Caterpillar 955L Crawler Loader: A Comprehensive Overview

[MikePhua]

Introduction
The Caterpillar 955L Crawler Loader, introduced in the late 1970s, is a versatile and durable piece of machinery designed for various heavy-duty tasks. Combining the functionalities of a bulldozer and a wheel loader, the 955L has been a reliable workhorse in construction, mining, and agricultural applications. This article delves into its specifications, common issues, and maintenance considerations to provide a comprehensive understanding of this iconic machine.

Specifications

• Engine: The 955L is powered by the Caterpillar D330 four-cylinder turbocharged diesel engine, delivering approximately 130 horsepower. This engine provides the necessary power for demanding tasks while maintaining fuel efficiency.
  
• Operating Weight: Approximately 34,950 lbs (15,860 kg), making it a robust machine capable of handling substantial workloads.
  
• Dimensions:
  • Length with bucket on ground: 16.25 ft (4,950 mm)
    
  • Width to outside of tracks: 7.09 ft (2,160 mm)
    
  • Height to top of cab: 7.52 ft (2,290 mm)
    
  • Ground clearance: 1.37 ft (416 mm)
    
  • Reach at full dump height: 3.84 ft (1,170 mm)
    
• Undercarriage:
  • Track width: 14.97 in (380 mm)
    
  • Track gauge: 66.15 in (1,680 mm)
    
  • Number of track rollers per side: 6
    
  • Ground contact area: 2,759.01 in² (1.78 m²)
    
• Hydraulic System:
  • Hydraulic raise time: 6.6 seconds
    
  • Dump time: 1.6 seconds
    
  • Lower time: 3.2 seconds
    
• Bucket Capacity:
  • Struck: 1.7 yd³ (1.3 m³)
    
  • Heaped: 2.1 yd³ (1.6 m³)
    
• Performance:
  • Static tipping load: 18,607 lbs (8,440 kg)
    
  • Breakout force (standard bucket): 22,930 lbs (102 kN)
    
  • Maximum speed: 7.1 mph (11.3 km/h)
    

Common Issues and Maintenance Considerations
While the 955L is renowned for its durability, like any heavy machinery, it is susceptible to certain issues over time. Understanding these potential problems and their solutions can aid in maintaining the loader's performance and longevity.

1. Final Drive Failures: One of the most common issues reported by operators is failure of the final drive assembly. Symptoms include unusual noises, loss of power, or visible oil leaks. Regular inspection and timely replacement of seals and bearings can prevent extensive damage. In some cases, complete final drive replacement may be necessary.
   
2. Track Adjuster Problems: The track adjuster mechanism can experience issues such as leakage or failure to maintain proper tension. Regular inspection and maintenance of the track adjuster are crucial to ensure optimal track performance and prevent uneven wear.
   
3. Hydraulic System Leaks: Hydraulic fluid leaks can occur due to worn seals or damaged hoses. It's essential to regularly check the hydraulic system for leaks and promptly replace any faulty components to maintain efficient operation.
   
4. Clutch and Brake Wear: Over time, the clutch and brake components may wear out, leading to slippage or reduced braking efficiency. Regular inspection and maintenance of these components can prevent operational failures and ensure safety.
   
5. Engine Overheating: Engine overheating can result from clogged radiators, low coolant levels, or malfunctioning thermostats. Regular cleaning of the radiator and monitoring of coolant levels can help prevent overheating issues.
   

Maintenance Tips
To ensure the Caterpillar 955L continues to perform optimally, consider the following maintenance practices:

• Regular Inspections: Conduct routine inspections of all major components, including the engine, hydraulic system, tracks, and undercarriage. Early detection of issues can prevent costly repairs.
  
• Lubrication: Regularly lubricate moving parts to reduce wear and prevent rust. Follow the manufacturer's recommendations for lubrication intervals and types of grease.
  
• Fluid Changes: Regularly change engine oil, hydraulic fluid, and coolant to maintain system efficiency and prevent component wear.
  
• Track Maintenance: Monitor track tension and adjust as necessary. Inspect tracks for wear and replace damaged links promptly.
  
• Component Replacement: Replace worn or damaged components, such as seals, bearings, and hoses, promptly to prevent further damage and maintain operational efficiency.
  

Conclusion
The Caterpillar 955L Crawler Loader remains a testament to Caterpillar's commitment to producing durable and versatile machinery. While it presents certain maintenance challenges, with regular care and attention, it can continue to serve effectively in various applications. Understanding its specifications, common issues, and maintenance requirements can help operators maximize the lifespan and performance of this iconic machine.