CAT AP1055 Banded Tracks and Paver Mobility Challenges

[MikePhua]

The AP1055 Series and Caterpillar’s Paving Legacy
The Caterpillar AP1055 tracked asphalt paver has long been a workhorse in highway and municipal paving. Introduced in the 1990s and refined through multiple generations, the AP1055 series was designed for high-production paving with excellent traction and flotation. Its rubber track system, known for stability and reduced ground pressure, allows the machine to operate on soft subgrades and freshly laid asphalt without rutting.
Caterpillar’s paving division, rooted in the acquisition of Barber-Greene in the 1990s, built the AP1055 to serve contractors needing consistent mat quality, wide paving widths, and reliable propulsion. The machine features a dual swing-out console, electronic auger and conveyor controls, and a screed capable of widths exceeding 20 feet with extensions.
Understanding Banded Track Construction
The AP1055 uses a rubber banded track system, which differs from segmented steel or bolt-on pad designs. These tracks are constructed as continuous rubber belts reinforced with embedded steel cables and molded cleats. The design offers smooth ride quality and reduced vibration, which is critical for maintaining screed consistency.
Key terminology:

• Banded track: A continuous rubber belt with internal reinforcement, molded as a single loop.
  
• Cleat: Raised rubber lugs that provide traction and engage with drive sprockets.
  
• Drive lug: Internal protrusion that meshes with the sprocket teeth to transmit torque.
  
• Track tensioner: Hydraulic or spring-loaded system that maintains proper track alignment and tension.
  

Advantages of banded tracks:

• Lower ground pressure compared to steel
  
• Reduced noise and vibration during operation
  
• Minimal damage to finished surfaces
  
• Fewer moving parts than segmented systems
  

One operator in Michigan noted that his AP1055 with banded tracks could pave over soft shoulders without leaving imprints, a feature that saved time during rural road widening projects.
Common Issues and Wear Patterns
Despite their benefits, banded tracks are subject to wear and failure, especially in high-heat, abrasive environments. Common problems include:

• Cracking or delamination of rubber due to UV exposure
  
• Cleat wear from aggressive turning or gravel surfaces
  
• Internal cable breakage from over-tensioning
  
• Drive lug shearing from misalignment or sprocket wear
  
• Track walk or derailment due to tension loss
  

Inspection checklist:

• Look for exposed steel cords or frayed edges
  
• Check cleat height and spacing for uniformity
  
• Inspect drive lugs for cracking or missing segments
  
• Monitor track alignment during operation
  
• Measure track tension and adjust per manufacturer spec
  

Recommendations:

• Store machine indoors or cover tracks when idle
  
• Avoid sharp turns on abrasive surfaces
  
• Replace worn sprockets to prevent lug damage
  
• Use infrared thermometer to monitor track surface temperature during hot paving
  

One technician in Georgia found that premature track failure was linked to a misaligned idler that caused uneven wear. After realignment and sprocket replacement, track life improved by 40%.
Replacement and Retrofit Considerations
Replacing banded tracks on the AP1055 requires careful planning due to their size, weight, and tensioning requirements. Unlike segmented tracks, banded systems must be installed as a single unit, often requiring lifting equipment and precise alignment.
Replacement steps:

• Lift machine and support with cribbing or jack stands
  
• Release track tensioner and remove old track
  
• Inspect rollers, idlers, and sprockets for wear
  
• Install new track with proper orientation
  
• Re-tension and test for alignment under load
  

Retrofit options:

• Some contractors opt to convert to segmented rubber pads for easier replacement
  
• Aftermarket banded tracks may offer improved cleat design or heat resistance
  
• Consider upgrading tensioner system to hydraulic for better control
  

One fleet in Ontario retrofitted their AP1055s with aftermarket banded tracks featuring Kevlar reinforcement. The upgrade reduced stretching and improved performance on steep grades.
Operational Tips to Extend Track Life
Maximizing the lifespan of banded tracks requires disciplined operation and preventive care.
Best practices:

• Avoid spinning tracks during loading or unloading
  
• Keep tracks clean of asphalt buildup and debris
  
• Use water spray or release agents to prevent sticking
  
• Monitor track temperature during long paving runs
  
• Train operators to minimize aggressive steering
  

One contractor in Texas implemented a daily track cleaning routine using a pressure washer and scraper. The practice reduced buildup and prevented heat-related delamination during summer paving.
Conclusion
Banded tracks on the CAT AP1055 offer a balance of traction, surface protection, and ride quality essential for precision paving. While they require specific care and attention, their performance in soft and sensitive environments makes them a valuable asset. Understanding their construction, wear patterns, and maintenance needs ensures smoother operation and longer service life—keeping the paver moving and the mat consistent.