Abstract: The apparatus is used in combination with a heat exchanger having a horizontally elongated and longitudinally removable tube bundle. The apparatus comprises an elongated vehicular base provided with wheels and capable of rolling on the ground in a predetermined direction longitudinal of the base. An upright vertically telescoping column is supported on the base and defines an upright axis. An elongated support to one side of the upper end of the column and defines a horizontal axis and the support can rotate about the upright axis, so that the horizontal axis can be parallel or transverse to the elongated base. A carriage is displaceable axially along the support and adapted to engage the end of the bundle. The carriage can be displaced axially along the support when engaged with the bundle to displace the bundle along the support. The single apparatus is able to extract the tube bundle unassisted, transport it to and from the cleaning location, and reinsert it into the heat exchanger.