Abstract: A protective guard assembly for the instrument panel of an operator's console has a vandalism-proof cover which is supported for movement between a storage position over the console and a closed position over the instruments by sets of swing links. The swing links are of different length to provide different movement paths for the upper and lower ends of the panel cover. The cover upper end swings along a relatively flat arc into and out of the storage position and the lower end swings just in front of the instrument panel from above the console to over the lower edge of the instrument panel. Space required for movement of the cover does not encroach upon the space usually occupied by the vehicle operator. Links at opposite sides of the panel cover are connected by a torque rod to prevent binding as the panel cover is moved. The panel cover is designed to interfere with an ignition key inserted into the instrument panel, but not with instruments which project from the panel.

Abstract: A hydraulic system for use in extremely cold environments has a pump for passing hydraulic fluid from a reservoir to a hydraulic cylinder of a work element via a control valve that is positioned a relatively great distance from the hydraulic cylinder. Fluid pathways are provided for substantially continuously moving hydraulic fluid between the control valve and hydraulic cylinder during operation of the pump.