When industry is looking at the best ways to increase efficiency, reduce downtime and increase
profitability, gearbox performance and reliability are key factors. In most applications gearbox reliability is
critical to the productivity of the overall plant operation. Repair is often required with a swift turn around,
as down time is very expensive. Designing for repair, and writing effective repair procedures, can speed
the service time, and provide a quality refurbishment. Minimizing down time and extending service life will
contribute significantly to achieving the lowest overall operation costs.
The best practices listed below are proven, effective methods used to install and remove bearings, seals,
gears, couplings and shafts within a gearbox. These techniques are not new, and are usually obtained by
hard won experience. Collecting them in one location is an attempt to document the best practices and
provide a reference for design engineers. Engineers write the procedures for assembly and disassembly,
they also dictate to the rest of the design team the design intent. Including features to facilitate
disassembly, minimizes repair cycle time and helps to prevent damage to components that could radically
compromise their design life or performance.

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