Vehicle comprising a crawler track assembly

An agricultural vehicle (1) comprising:

• at least one crawler track assembly (2;
• 19) having a plurality of supporting rollers (7, 8) arranged one behind the other in the direction of travel of the vehicle and around which a belt (6) is wrapped, wherein the rollers (7, 8) are adjusted by way of at least one actuator (11) between a first configuration, in which all supporting rollers (7, 8) are loaded, and a second configuration, in which at least one outer roller (7) of the supporting rollers (7, 8) is relieved, and
• a drive energy source for delivering drive energy required to adjust the configuration, wherein an energy accumulator (29) is charged by the drive energy source and connected to the actuator (11) in order to provide the actuator (11) with the drive energy required to adjust the configuration.