Why the Sandvik TH663 Differential Fails: A Maintenance Case Study
Explore the differential failure in Sandvik TH663 and learn how to prevent costly downtimes.
Technical Summary
The Sandvik TH663 underground truck is designed for high-capacity hauling in challenging environments. This case study focuses on a differential failure that resulted in significant operational downtime and repair costs.
Component Function
The differential in the Sandvik TH663 allows for the distribution of torque to the wheels while enabling them to rotate at different speeds, especially during turns. This is crucial for maintaining traction and stability on uneven terrain.
Failure Mechanism
The failure occurred due to inadequate lubrication, which led to overheating and wear of the differential gears. This resulted in a complete breakdown of the gear assembly, causing the truck to lose traction and become inoperable.
Root Cause Analysis
An investigation revealed that the maintenance team had not adhered to the recommended lubrication schedule. Additionally, the lack of training on the importance of regular checks contributed to the oversight, leading to the failure.
Prevention & Corrective Actions
To prevent future failures, a revised maintenance schedule was implemented, emphasizing regular lubrication checks. Training sessions for operators on the importance of maintenance were also conducted to ensure adherence to best practices.
Prevention
Implementing regular lubrication checks and maintenance training for operators.