| 摘要 |
A ring replacement system (100) is described for enabling the replacement of a core lifter ring (200) associated with a core lifter case (300). The system (100) has a distorting member 120 locatable between the ring (200) and the case (300) and a plunger (104). The plunger is arranged to move the core lifter ring (200) relative to the core lifter case (300) and to bring the core lifter ring (200) into contact with the distorting member (120). This distorts the core lifter ring (200) in manner to reduce its outer diameter to enable the plunger to move the core lifter ring (200) into or out of the core lifter case (300). |
