- Function
- Enable operational travel while keeping the travel gearbox temperature at or below 80 °C.
- Functional failure
- Movement is maintained, but the gearbox temperature exceeds 80 °C.
- Failure mode
- External fins of the hydraulic oil cooler obstructed by dust and particles, restricting airflow.
- Effect
- Rising temperature, loss of oil viscosity and seal degradation, leading to an interruption of operation.
- Consequence
- Recorded classification: safety. Overheating may cause hose rupture, hot fluid release and fire.
“Inspect the hydraulic oil cooler core fins for dust and particulate buildup, and clean if deposits restrict airflow.”
- Applicability
- The obstruction develops progressively and can be identified visually before functional failure, allowing intervention.
- Effectiveness and economic assessment
- The record considers the task viable: lower material, service and lost-production costs, with similar labor requirements. This is a qualitative assessment, without a calculated savings percentage.
