Maintenance

For other uses, see Maintenance (disambiguation). For the Wikipedia administrative page, see Wikipedia:Maintenance.
A tractor being mechanically repaired in Werneuchen, 1966
Field repair of aircraft engine (1915–1916)

The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure and supporting utilities in industrial, business, and residential installations. Terms such as "predictive" or "planned" maintenance describe various cost-effective practices aimed at keeping equipment operational; these activities occur either before or after a potential failure.

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