Specifications include, but are not limited to: A. Bi-Annual Minor Maintenance: The services shown below should be performed twice a year by the contractor as coordinated with the GCDWR representative: • Inspect and lubricate hoist cable. Verify cable properly seats in drum groves. • Check gear case oil level. • Inspect brakes and verify proper operation, check level of hydraulic fluid in master cylinder. • Inspect general condition of all contactor points, auxiliary contact points on all contactors, relays, switches, limit switches, and controllers. • Verify electrical system operation. • Check manual controls for proper operation. • Check for cracks or deformation in the hook. • Check hook and throat opening, record hook throat opening. • Inspect latch on hook. • Verify hook swivels freely. • Check all bearings for noisy operation. • Inspect and test load brake. • Check supporting structure and trolley for loose suspension or support bolts, axle nuts, etc. • Ensure all capacity and safety labeling are accurate. B. Annual Minor Maintenance: The services shown below should be performed once a year by the contractor as coordinated with the GCDWR representative: • Lubricate all motors. • Check wheel, compare diameters of drivers. • Inspect gearbox gearing for uneven wear of the gear teeth. • Inspect motor brake for excessive or uneven disc wear. • Inspect wheels, bumpers, and guards. • Inspect and lubricate hoist cable. Verify cable properly seats in drum groves. • Check gear case oil level. • Inspect brakes and verify proper operation, check level of hydraulic fluid in master cylinder. • Inspect general condition of all contactor points, auxiliary contact points on all contactors, relays, switches, limit switches, and controllers. • Verify electrical system operation. • Check manual controls for proper operation. • Check for cracks or deformation in the hook. • Check hook and throat opening, record hook throat opening. • Inspect latch on hook. • Verify hook swivels freely. • Check all bearings for noisy operation. • Inspect and test load brake. • Check supporting structure and trolley for loose suspension or support bolts, axle nuts, etc. • Ensure all capacity and safety labeling are accurate. C. Annual Major Maintenance: The services below should be performed once a year by the contractor as coordinated with the GCDWR representative: • Drain and flush all gear cases. Refill with clean, fresh proper lubricant. • Check drive shaft alignment at couplings. • Check load limiting device. • Check all wiring and terminal connections for tightness. • Inspect rope sheaves and drums for excessive wear. • Check bearing lubrication, repack with grease if necessary. • Lubricate all motors. • Check wheel, compare diameters of drivers. • Inspect gearbox gearing for uneven wear of the gear teeth. • Inspect motor brake for excessive or uneven disc wear. • Inspect wheels, bumpers, and guards. • Inspect and lubricate hoist cable. Verify cable properly seats in drum groves. • Check gear case oil level. • Inspect brakes and verify proper operation, check level of hydraulic fluid in master cylinder. • Inspect general condition of all contactor points, auxiliary contact points on all contactors, relays, switches, limit switches, and controllers. • Verify electrical system operation. • Check manual controls for proper operation. • Check for cracks or deformation in the hook. • Check hook and throat opening, record hook throat opening. • Inspect latch on hook. • Verify hook swivels freely. • Check all bearings for noisy operation. • Inspect and test load brake. • Check supporting structure and trolley for loose suspension or support bolts, axle nuts, etc. • Ensure all capacity and safety labeling are accurate.
