Three Prevention Rules
- Replace early: At 80% of rated cycle life (preventive, not reactive)
- Don't over-deflect: Stroke ≤ 75% of spring free length
- Protect from coolant: Add ejector space covers to prevent corrosion
How to Prevent Spring Breakage in Early Return Units
Key Takeaway: Replace springs at 80% of rated life (400K cycles for 500K-rated springs). Verify stroke ≤ 75% of spring free length to prevent set.
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