Sewer cleaning vehicle for loosening and sucking up contaminants from wastewater sewers and sludge pits, - having a pivotable telescopic boom which can be positioned over the opening of the wastewater sewer or the sludge pit, - having a high-pressure hose which is mounted on a hose reel such that it can be wound up and unwound and which can be guided out of the vehicle and can be guided into the telescopic boom, approximately parallel to the longitudinal axis of the vehicle, - having a suction hose which can be transported into a storage unit on the vehicle and can be transported out of the same, - wherein the high-pressure hose and the suction hose can be guided together in the telescopic boom, - wherein the high-pressure hose and the suction hose can be guided within the telescopic boom at least partly on roller elements (36, 40), of which at least some can be driven by motor, wherein - the suction hose can be guided into the telescopic boom via a pair of rollers fixed to the vehicle, wherein the pair of rollers fixed to the vehicle is arranged in front of the telescopic boom and in the longitudinal axis of the telescopic boom when the telescopic boom is in a transport position, - a first guide rail is pivotably mounted on the pair of rollers fixed to the vehicle, - a second guide rail is pivotably mounted on the telescopic boom, - the first guide rail and the second guide rail are connected to each other via a displaceably mounted sliding block, - a first pair of rollers for the suction hose is fastened to the first guide rail in a fixed location, - a second pair of rollers is fastened to the second guide rail in a fixed location. - having a pivotable telescopic boom which can be positioned over the opening of the wastewater sewer or the sludge pit, - having a high-pressure hose which is mounted on a hose reel such that it can be wound up and unwound and which can be guided out of the vehicle and can be guided into the telescopic boom, approximately parallel to the longitudinal axis of the vehicle, - having a suction hose which can be transported into a storage unit on the vehicle and can be transported out of the same, - wherein the high-pressure hose and the suction hose can be guided together in the telescopic boom, - wherein the high-pressure hose and the suction hose can be guided within the telescopic boom at least partly on roller elements (36, 40), of which at least some can be driven by motor, wherein - the suction hose can be guided into the telescopic boom via a pair of rollers fixed to the vehicle, wherein the pair of rollers fixed to the vehicle is arranged in front of the telescopic boom and in the longitudinal axis of the telescopic boom when the telescopic boom is in a transport position, - a first guide rail is pivotably mounted on the pair of rollers fixed to the vehicle, - a second guide rail is pivotably mounted on the telescopic boom, - the first guide rail and the second guide rail are connected to each other via a displaceably mounted sliding block, - a first pair of rollers for the suction hose is fastened to the first guide rail in a fixed location, - a second pair of rollers is fastened to the second guide rail in a fixed location.