Abstract: Armrests of a vehicle seat include vertical brackets having legs located in vertical guide slots defined by support structure. A cam plate is rotatably mounted between the brackets for movement between a lock position, wherein it establishes a tight frictional engagement between opposed surfaces of the legs and guide slots, and a release position wherein it permits the legs to move freely in the slots.

Abstract: A mounting step is fixed to a rear side location of a loader bucket. The step is spaced forwardly of one drive track when the bucket is in a lowered position resting on the ground and permits an operator to step to or from the top of the drive track with the aid of a grab handle on an engine enclosure.

Abstract: An industrial tractor is provided with a fuel system including a fuel tank connected to a fuel pump mounted on the tractor engine. The fuel line includes a section of rubber hose at the end which is connected to the fuel pump while the remainder of the line is metal. A fuel shut-off valve is located in the metal portion of the line. A heat sensitive actuator automatically shifts a spool of the valve from a normal, open position to a closed position in response to being subjected to a relatively high temperature indicative of the existence of a fire in the engine compartment. Thus, fuel in the tank is prevented from feeding the fire in the event that the fire burns through the rubber hose.