This was a large vehicle working on a steep slope. As it turned to go up the embankment one tyre came off the rim. The tyre company tried to change the wheel but the machine was too unstable and slipped off the jack. The Rotator lifted/supported the machine whilst a large tractor further up the field held the vehicle in place to prevent it slipping off the blocks/supports which had been made. The rear wheel was successfully changed and the machine continued with its work.