Failure Modes:
1. Dynamic Seal Failure:
- Rod seals extrusion due to cylinder scoring.
- Swivel joint O-ring degradation (Shore A hardness <70).
2. Structural Integrity Loss:
- Hose abrasion from improper routing (minimum bend radius violation).
- Pump casing fatigue cracks (detect via dye penetrant testing).
Repair Procedures:
- External Leak Mitigation:
- For SAE 100R2AT hoses, replace if outer cover exhibits >10% wire braid exposure.
- Reflare JIC 37° fittings using Parker Legris® tooling.
- Seal Replacement Protocol:
- Disassemble cylinders under controlled cleanliness (ISO 4406 Class 14/11).
- Install wiper seals with dual-lipped design for extended service life.
- Internal Leak Quantification:
- Conduct pump case drain flow test: >10% of rated flow indicates severe wear.
Preventive Maintenance:
- Perform annual hydraulic hose audit per SAE J517 guidelines.
- Monitor seal temperatures with IR thermography during operation.