Failure Analysis & Root Cause

Reading failed parts and preventing repeat failures.

Lessons

1. 01Separate Brake Symptoms from Their CausesDistinguish normal brake behavior, adjustment problems, and component faults before selecting a diagnostic path.
2. 02Isolate Electric Brake Circuit FaultsUse voltage behavior and sectional current testing to distinguish controller, wiring, connection, and magnet faults.
3. 03Interpret Lining, Magnet, and Drum EvidenceUse wear patterns and contamination to select friction-component repairs without confusing acceptable surface changes with failure.
4. 04Separate Hydraulic Delivery and Actuator FaultsTrace weak or delayed hydraulic braking through fluid condition, mechanical clearance, electrical supply, and actuator response.
5. 05Diagnose Air Brake Force and Release ProblemsRelate air supply, chamber stroke, slack-adjuster geometry, and foundation-brake condition to air-brake symptoms.
6. 06Trace Bearing Damage to Inspection and Adjustment ConditionsDistinguish bearing surface damage from lubrication, contamination, and adjustment conditions that can cause repeat failure.
7. 07Investigate Recurring Seal LeaksExamine the seal, spindle journal, hub bore, orientation, and installation depth when lubricant leakage returns.
8. 08Find Why Alignment Will Not Stay CorrectSeparate measurement setup errors from worn suspension parts and loose clamps that prevent stable axle alignment.
9. 09Read Tire Wear and Wheel Attachment EvidenceConnect tread patterns and wheel attachment conditions to pressure, alignment, balance, braking, and component-matching problems.
10. 10Investigate Failures After StorageUse storage-specific inspections to identify corrosion, contamination, battery condition, and wheel-end problems before return to service.