PLATE-CORNER 2490657 - Caterpillar

Table 1
Factory Part Number (Rubber)     Service Part (Steel)    
309-3296 Idler Wheel (Inside)     258-3053 Idler Wheel (Inside)    
309-3297 Idler Wheel (Outside)     258-3052 Idler Wheel (Outside)    Refer to Table 2 in order to select the proper idler.
Table 2
    309-3296 Idler Wheel and 309-3297 Idler Wheel
Rubber     258-3052 Idler Wheel and 258-3053 Idler Wheel
Steel    
Application     Medium to low abrasive material     Work in abrasive materials    
Applications for use in dirt Applications which may cause counterrotation of the tracks    
Applications that call for surfaces that are hard to medium surfaces such as packed ground or concrete This will cause high amounts of material to be taken into the track.    
Applications that do not cause significant amounts of rocky material to be continuously taken into the undercarriage Examples include backfilling basements and filling foundations with base material.    
Material     Low to moderate levels of loose, rocky material     Medium to high levels of rocky material    
Materials that are not prone to packing or building up within the undercarriage Debris buildup near the idler during operation    
Sticky buildup of material in the undercarriage that is not cleaned regularly    
Maintenance     Normal maintenance practices     Poor maintenance of the undercarriage    
Examples include cleanout or tensioning of the track.    
Operating Technique     Proper operating techniques     Applications that require a high level of counterrotation    
Three-point turns Debris can be taken into the undercarriage.    
Minimize counterrotation.