Case Study: Front Brake Overheating Identified via Temperature Differential Analysis

DataMind AI continuously monitors brake temperature differentials, ARC system status, and brake component condition on a CAT 793D haul truck. Over the last two months, the front brake temperature difference consistently exceeded normal thresholds, with values beyond -25C recorded against a normal limit of -15C.

Telemetry data revealed sustained LH brake overheating while the ARC system remained inactive during these events. If brakes function correctly, temperature increase should be uniform across both sides. The persistent asymmetry indicated a defective LH brake pack or internally damaged slack adjuster. Conventional visual inspections would not have detected these internal failures until external symptoms appeared.

Cross-referencing temperature trends with brake system diagnostics, the AI identified that continued operation beyond 124C compromises duo cone seals, leading to external oil leaks and cascading brake system damage. The LH slack adjuster internal springs were the most probable root cause of the uneven braking force.

Maintenance evaluated the front slack adjuster working pressure and residual pressure, inspected internal springs, pressurized service and parking brakes, verified parking brake pressure, performed brake pack measurement, and inspected the temperature sensor. This intervention prevented duo cone seal failure and potential loss of braking capability, avoiding an estimated $25,000 in repairs and 24 hours of downtime.