{"id":"preventive-maintenance","model_id":"Preventive maintenance","name":"Preventive maintenance","summary":"Preventive maintenance is an equipment servicing approach in which maintenance personnel regularly check and overhaul equipment on a schedule. The stated aims are to decrease breakdowns and increase equipment life. In lean manufacturing, hourly workers also carry out daily basic preventive maintenance tasks.","study_notes":["Described as a precursor to Total Productive Maintenance (TPM); TPM is named only for comparison in the document.","Work is performed by maintenance personnel on a regular, scheduled basis.","Purpose: decrease breakdowns and increase equipment life.","In lean manufacturing, hourly workers take daily responsibility for basic preventive maintenance tasks.","Basic tasks listed for hourly workers: checking lubrication levels, checking the condition of filters, and checking the tightness of nuts and bolts."],"safety_notes":[],"sources":[{"url":"https://www.lean.org/lexicon-terms/preventive-maintenance/","title":"Preventive Maintenance - Lean Enterprise Institute","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":1,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"operational","spec":{"kind":"methodology","related":[]},"url":"https://machineschema.com/operational/preventive-maintenance","license":"https://creativecommons.org/licenses/by/4.0/"}