• | Bad welds |
• | Scoring on the band contact surface |
• | Heat damage |
• | Dishing or flatness of band surfaces |
• | Bushing cracks, damage, or scoring |
• | Damage or cracks |
• | Seal grooves for burrs, nicks, or distortion |
• | Wear or burning |
• | Backing plate for damage, cracks, or burning |
Important: The ball check valve must be in its seated position before you perform the leak test.