Abstract: The apparatus includes a base frame 10; an assembly of carrier beams 17, 18 pivoted on the base frame 10 for rotation about an upright axis; clamps 19, 23 adjustably mounted on the carrier beams 17, 18 for clamping a vehicle supported on the carrier beams; retaining means 34 for releasably locking the assembly of carrier beams 17, 18 in rotatably adjusted position; a standard 36 on the base 10; and tensioning means 48, 50 mounted for vertical adjustment on the standard 36, for connection by a chain 51 direct or via a beam 52 and a further chain to parts of a vehicle clamped on the rotatable carrier beam assembly 17, 18. The tensioning means 48, 50 comprises a hydraulic cylinder 48 swingable about the standard 36 and an associated yoke 50.