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A. Unit shall provide continuous turret rotation with no stops. <br />B. A hydraulic motor, driving the turret through a self-locking worm gearbox (no brake) <br />shall accomplish rotation. The gearbox is mounted on turret above rotation. <br />C. The rotation system shall be capable of rotating the maximum rated load capacity of the <br />unit at the maximum attainable horizontal distance away from the pedestal upwards on a <br />five -degree incline. <br />Leveling <br />A. The platfon-n shall be maintained in a level position relative to the chassis fi-ame in all <br />operating positions of the unit by a "closed" hydraulic system comprised of twin 21/2" <br />platform cylinders interacting with a boom -actuated 4" master cylinder mounted in the <br />boom support turret. <br />B. The leveling system shall be provided with a factory -set relief valves to compensate for <br />oil expansion or overload during platform leveling operation. <br />C. A leveling valve shall be provided in the boom control bank. <br />D. The leveling system shall be permanently connected to the boom valve bank and be <br />capable of being remotely re -leveled with an electrical switch in the platform. <br />Stability <br />A. Completed unit shall be stability tested prior to delivery and shall be in conformance with <br />ANSI A92.2. <br />Emergency Lowering <br />A. Unit shall be provided with twelve -volt emergency lowering system. <br />B. Switches shall be located at both the lower controls and upper controls. <br />Hydraulic System <br />A. The hydraulic system shall be of open center design with 2,500-psi minimum design <br />pressure. <br />B. The hydraulic pump shall be a gear type 14 GPM at 1,200 engine RPM. <br />C. The pump shall be of domestic manufacture. <br />D. The hydraulic pump shall be driven by a hot -shift PTO mounted to the transmission. <br />E. The PTO shall include an indicator/warning light. <br />F. The hydraulic pump shall be flange mounted to the PTO by means of an S.A.E. type <br />flange mount. <br />G. The load bearing ends of all hydraulic cylinders shall be equipped with check or counter <br />balance valves capable of hydraulically locking the cylinder and preventing movement of <br />the cylinder in the event of loss of hydraulic power or line failure. <br />H. Hydraulic oil reservoir shall be properly labeled near the filler opening, <br />1. Hydraulic oil reservoir shall be mounted to the side of the sub frame below the bed with a <br />capacity of no less than 3 5 gallons. <br />J. Hydraulic oil reservoir filler opening shall be of such design as to prevent oil from <br />splashing out of the reservoir. <br />K. Hydraulic oil reservoir shall be easily accessible and have a removable strainer. <br />L. Hydraulic oil shall be supplied to the turret -mounted control valve through a rotary <br />manifold. <br />14 <br />