Comprehensive Guide to the CAT 951B Track Loader: Features, Maintenance, and Common Issues

[MikePhua]

The CAT 951B track loader is a robust and versatile machine widely used in construction, mining, and heavy material handling. Known for its power and reliability, this track loader combines the capabilities of a bulldozer and a loader, featuring a tracked undercarriage for superior traction on rough terrain. This guide offers an in-depth look into the 951B’s design, maintenance practices, common problems, and operational tips.
Key Terminology

• Track Loader: A machine with tracks instead of wheels, designed for loading and earthmoving tasks.
  
• Undercarriage: The track system including tracks, rollers, sprockets, and idlers.
  
• Hydraulic System: Provides power to lift arms, bucket, and other functions.
  
• Bucket Capacity: Volume of material the loader bucket can carry.
  
• Engine Power: Horsepower rating of the engine driving the machine.
  
• Blade: Some track loaders have a front blade for grading or pushing material.
  
• Swing Frame: Allows the loader to pivot or articulate for maneuvering.
  
• Operator Station: Cab area where the operator controls the machine.
  

Features of the CAT 951B

• Durable engine delivering substantial horsepower for heavy-duty tasks.
  
• Heavy-duty undercarriage designed to withstand harsh terrain.
  
• Large bucket capacity suited for material handling, excavation, and loading.
  
• Robust hydraulic system providing smooth and powerful implement operation.
  
• Operator-friendly controls with ergonomic layout.
  
• Optional attachments enhance versatility, including forks and rippers.
  

Maintenance Best Practices

• Daily Inspections
  • Check track tension and condition.
    
  • Inspect hydraulic hoses and fittings for leaks or damage.
    
  • Monitor fluid levels: engine oil, hydraulic fluid, coolant.
    
  • Examine the bucket and teeth for wear.
    
• Scheduled Maintenance
  • Replace engine oil and filters per manufacturer guidelines.
    
  • Grease all pivot points and moving parts regularly.
    
  • Inspect and adjust track components to prevent premature wear.
    
  • Clean or replace air filters to ensure engine efficiency.
    
• Hydraulic System Care
  • Regularly change hydraulic fluid and filters.
    
  • Check for contamination and maintain proper fluid levels.
    

Common Issues and Troubleshooting

• Track Wear and Damage
  • Cause: Operating on abrasive surfaces or improper track tension.
    
  • Solution: Regular inspection and tension adjustment; replace worn track components.
    
• Hydraulic Leaks
  • Cause: Worn seals, damaged hoses, or loose fittings.
    
  • Solution: Immediate repair or replacement of affected parts; maintain hydraulic fluid cleanliness.
    
• Engine Performance Problems
  • Cause: Dirty fuel, clogged filters, or overheating.
    
  • Solution: Fuel system cleaning, filter replacement, cooling system maintenance.
    
• Bucket and Attachment Wear
  • Cause: Heavy use, abrasive materials.
    
  • Solution: Replace bucket teeth, inspect attachment mounts.
    

Case Study
A construction contractor operating a CAT 951B in a quarry setting reported reduced track life and frequent hydraulic leaks. Upon inspection, it was found that incorrect track tensioning and overdue hydraulic maintenance were the root causes. After correcting track tension, replacing worn hydraulic hoses, and implementing a strict maintenance schedule, the machine’s reliability and uptime improved significantly.
Industry Insights
Track loaders like the 951B remain popular due to their balance of mobility and material handling power. While wheel loaders offer speed on hard surfaces, track loaders excel in soft or uneven terrain. Advances in hydraulic system design and operator comfort have extended the usefulness of models like the CAT 951B even as newer machines enter the market.
Summary

• The CAT 951B is a durable, powerful track loader suited for demanding tasks.
  
• Regular inspections and maintenance prevent common issues like track wear and hydraulic leaks.
  
• Proper operator training improves machine lifespan and safety.
  
• Addressing problems early avoids costly repairs and downtime.
  

Maintaining a CAT 951B track loader with diligence and understanding its operational characteristics ensures peak performance and longevity across various job sites.