Abstract: This invention provides a removal arrangement for a fastener element which includes spaced exterior portions of a first diameter with a frustoconical portion in between, the frustoconical portion tapering from the first portion to a shoulder that connects to the third portion. A resilient retainer ring fits within a groove in a grommet attachable to a workpiece and encircles the fastener element at the first and third surface portions, and is engageable with the shoulder for preventing separation of the fastener element from the retainer ring. In the removal of the fastener element, an expansible member is extended over the fastener to encircle it at the third surface portion, the expansible member presenting an exterior surface substantially that of the first diameter of the fastener, bridging between the first and second surface portions so that said fastener element can be withdrawn from the retainer ring.

Abstract: A tool apparatus for removing the cylinder liner from an engine block with or without the assistance of the piston which is slidably mounted within the liner. The apparatus includes a portion which is firmly attached to the cylinder liner from the exterior of the engine block and has an impact member for removing the liner.