A welding torch maintenance apparatus for servicing a welding torch, the welding torch including a diffuser, a welding tip, and a nozzle having a distal end and a proximal end, the proximal end of the nozzle being attached to a welding arm of the welding torch, the welding torch maintenance apparatus comprising: a first gripping means for fastening the welding arm of the welding torch; a second gripping means for holding the nozzle, wherein the second gripping means is rotatable about a rotational axis to remove the nozzle from the welding torch, and wherein the second gripping means is movable along the rotational axis; a drive means for rotating the second gripping means; a lift system for moving the second gripping means along the rotational axis; and a cleaning means; wherein the cleaning means enters the nozzle at the distal end and cleans an interior of the nozzle, characterized in that: the lift system comprises: a first rail; a carriage movable along the first rail carrying the second gripping means; lifting means coupled to the carriage, wherein when the lifting means is actuated, the carriage together with the second gripping means move; and a level assembly for providing a degree of movement freedom for the second gripping means in a direction parallel to the rotational axis, the level assembly comprising: a holder member (302, 304) for holding the lifting means; spring members (310, 312); and a supporting member provided between the spring members, wherein the holder member (302, 304) is movable relative to the supporting member along a second rail, wherein the holder member (302, 304) comprises an upper plate and a lower plate, and wherein the spring members (310, 312) comprises an upper spring provided between the supporting member and the upper plate and a lower spring provided between the supporting member and the lower plate, wherein the holder member is movable relative to the supporting member such that the relative movement between the holder member and the supporting member is constrained by the spring members, thereby the degree of movement freedom is provided in the direction parallel to the rotational axis as the holder member together with the second gripping means may move slightly relative to the supporting member in the direction parallel to the rotational axis. a first gripping means for fastening the welding arm of the welding torch; a second gripping means for holding the nozzle, wherein the second gripping means is rotatable about a rotational axis to remove the nozzle from the welding torch, and wherein the second gripping means is movable along the rotational axis; a drive means for rotating the second gripping means; a lift system for moving the second gripping means along the rotational axis; and a cleaning means; wherein the cleaning means enters the nozzle at the distal end and cleans an interior of the nozzle, characterized in that: the lift system comprises: a first rail; a carriage movable along the first rail carrying the second gripping means; lifting means coupled to the carriage, wherein when the lifting means is actuated, the carriage together with the second gripping means move; and a level assembly for providing a degree of movement freedom for the second gripping means in a direction parallel to the rotational axis, the level assembly comprising: a holder member (302, 304) for holding the lifting means; spring members (310, 312); and a supporting member provided between the spring members, wherein the holder member (302, 304) is movable relative to the supporting member along a second rail, the lift system comprises: a first rail; a carriage movable along the first rail carrying the second gripping means; lifting means coupled to the carriage, wherein when the lifting means is actuated, the carriage together with the second gripping means move; and a level assembly for providing a degree of movement freedom for the second gripping means in a direction parallel to the rotational axis, the level assembly comprising: a first rail; a carriage movable along the first rail carrying the second gripping means; lifting means coupled to the carriage, wherein when the lifting means is actuated, the carriage together with the second gripping means move; and a level assembly for providing a degree of movement freedom for the second gripping means in a direction parallel to the rotational axis, the level assembly comprising: a holder member (302, 304) for holding the lifting means; spring members (310, 312); and a supporting member provided between the spring members, wherein the holder member (302, 304) is movable relative to the supporting member along a second rail, spring members (310, 312); and a supporting member provided between the spring members, wherein the holder member (302, 304) is movable relative to the supporting member along a second rail, wherein the holder member (302, 304) comprises an upper plate and a lower plate, and wherein the spring members (310, 312) comprises an upper spring provided between the supporting member and the upper plate and a lower spring provided between the supporting member and the lower plate, wherein the holder member is movable relative to the supporting member such that the relative movement between the holder member and the supporting member is constrained by the spring members, thereby the degree of movement freedom is provided in the direction parallel to the rotational axis as the holder member together with the second gripping means may move slightly relative to the supporting member in the direction parallel to the rotational axis.