Abstract: A hydraulic fluid storage tank for an industrial vehicle. A small surge tank (44) is mounted on top of a main tank (10) and communicates with the main tank via a drain back hole (49) formed in the top of the main tank. A first breather tube (46), having one end opening within the surge tank, extends directly into the main tank. A second breather tube (48), having one end opening within the surge tank, enters the main tank through the drain back hole, extends along the top of the tank, and opens into the tank at a point substantially rearward of the first vent tube. If, due to movement of the vehicle, one of the breather tubes becomes filled with oil, the other will still function. Oil which momentarily floods one of the breather tubes enters the surge tank and drains back to the main tank via the drain back hole.

Abstract: A service brake pedal for a stand-up industrial vehicle in which the pedal assumes a level attitude when an operator stands normally on the vehicle with one foot on the pedal and most of his weight applied to the heels of his feet. The service brake pedal is supported by a linkage system which applies a braking force to the service brake system when the operator's weight on the pedal engaging foot is shifted forwardly from his heel. The linkage is arranged to permit essentially all the operator's weight to be selectively applied to the brake system when required.

Abstract: A material handling vehicle system comprising a universal power module and a plurality of interchangeable load handling modules. The load handling modules disclosed include two forms of order pickers, a double masted stacker, and a towing attachment. The connection between the load handling module and the power modules is designed to maintain a constant force on the steering wheels of the power module regardless of the load on the load handling module, and to facilitate changing from one load handling module to another.