Once your Jupiter gearbox arrives at our facility we disassemble, clean, inspect and measure all gears and shafts and determine if your Jupiter gears and shafts are qualified to be repaired. If the Jupiter gears and shafts are not repairable, we have the capabilities and expertise to manufacture all new Jupiter gears and shafts such as Helical, Double Helical, Herringbone, Split Herring bone, Bevel, Spiral Bevel, Spur Gears, Ring Gears, Eternal Ring Gears, Rack & Pinion, Worm Gears, Double Enveloping Worm Gears, Hypoid Gears, Screw Gears, Plus More! Once your Jupiter gearbox is repaired we then do a six hour test run for overheating, vibration, and leaking to ensure our 24 Month Guarantee. National Gear Box Repair can do all of these repairs and rebuilds at a considerable amount of saving rather than buying a new Jupiter gearbox.