Safe and Easy Back Pull-Out The power end is entirely outside the pump casing allowing a safe and easy "sling point" for removal. Jacking bolt holes are provided to ease the separation of the power end from the casing. No special tools or "T" handles are required to remove the power end. No shims are used on the casing bolt circle for clearance adjustments. No risk of injury from "wrestling" with an awkward back pull-out design.