Specifications include, but are not limited to: - Remove drive motor, belt, and inspect drive gear and alignment. Repair and/or replace as needed. - Release outer piston and inspect main gear and spline. Repair and/or replace as needed. - Remove superstructure from gearbox and inspect planetary and sun gears and remove. Repair and/or replace as needed. - Removed gear box, repair and/or replace all Timken seals complete O-ring pack, metric seals, double row bearings and trust bearing. - Removed main lifting gear and inspect key and keyway. Repair and/or replace as needed. - Inspect double tap acme thread for damage. Repair and/or replace as needed. - Inspect lifting nut and safety nut for damage. Repair and/or replace as needed. - Inspect lifting nut and safety nut for proper clearance specification. - Inspect Hi and low limit switches and replace as needed. - Complete all needed repairs and reassemble lift, test operation, and commission lift back into service.