Guide
How to make a preventive maintenance schedule
To make a preventive maintenance schedule, list your equipment, copy each machine's recurring tasks and intervals from its manufacturer's manual, choose a first due date for every task and put the resulting dates where the whole team will see them. Then record each job when it is done. The seven steps below take a small team from nothing to a working schedule.
1. List the equipment
Write down every machine you maintain and give each one a stable asset ID, ideally the same one written on the machine. The ID is what ties the schedule, the work orders and the maintenance log to the same piece of equipment.
2. Collect the tasks and intervals
For each machine, open the manufacturer's manual and copy its recurring maintenance tasks with the interval the manual gives. Add anything your site's procedures require. This guide does not suggest tasks or intervals; they depend on the equipment and how it is used, and regulated equipment may have rules of its own.
3. Decide what triggers each task
Some instructions are based on time, such as a number of months. Others are based on use, such as operating hours. A manual may give both with a rule such as "whichever comes first". Time-based tasks belong in a calendar; usage-based tasks need meter readings. Calendar-based vs meter-based maintenance explains the difference.
4. Choose the first due date
Every time-based task needs a first due date. Later dates are counted from it. Pick a date your team can actually meet, and spread first dates out so that everything does not fall due in the same week.
5. Choose how dates are counted
Decide whether each next date is fixed in advance or counted from the day the work was actually done. Fixed due dates keep a steady rhythm and make late work easy to see. Dates based on completion move when work is late. Choose one rule and write it down, because switching later changes every future date.
6. Put the dates where people look
A schedule in one person's notebook is easy to forget. Use a shared calendar, a page on the wall or both. The preventive maintenance scheduler calculates the dates and exports them as a calendar file, and the schedule template is a one-page grid to print.
7. Record the work and review the plan
When a job is done, record it: what was done, by whom and what was observed. A work order holds the detail of one job, and the maintenance log holds the machine's history. Every few months, compare the schedule with the records. Tasks that are always late or always skipped are a sign that the plan needs adjusting with someone qualified to judge the equipment.
Example
Example: sample data. A task first due on January 31, 2027, repeating every month, shown for 12 months. The monthly interval only illustrates how the dates work; it is not a recommendation for any equipment.
| # | Due date | Day |
|---|---|---|
| 1 | 2027-01-31 | Sun |
| 2 | 2027-02-28 | Sun |
| 3 | 2027-03-31 | Wed |
| 4 | 2027-04-30 | Fri |
| 5 | 2027-05-31 | Mon |
| 6 | 2027-06-30 | Wed |
| 7 | 2027-07-31 | Sat |
| 8 | 2027-08-31 | Tue |
| 9 | 2027-09-30 | Thu |
| 10 | 2027-10-31 | Sun |
| 11 | 2027-11-30 | Tue |
| 12 | 2027-12-31 | Fri |
| 13 | 2028-01-31 | Mon |
Months without a 31st use their last day, and the following month goes back to the 31st, because each date is counted from the first due date.
Common mistakes
- Copying a plan between different machines. Two units of the same model can be used very differently. Check the manual's conditions before reusing a plan.
- Scheduling without owners. A task with no name next to it tends not to get done.
- Treating the schedule as proof. A date in a calendar shows what was planned. The record of the work is what shows it happened.
- Never reviewing it. A schedule that no longer matches how the equipment is used stops being followed.
What a schedule does not do
A schedule shows what is due and when. It does not ensure the work gets done, and it does not prevent breakdowns by itself. Doing the work safely needs procedures and training of its own.
Common questions
What is a preventive maintenance schedule?
It is the list of planned maintenance tasks for your equipment with the date each one is next due. It turns the instructions in each machine's manual into dates that people can see and act on.
What should a preventive maintenance schedule include?
For each task: the equipment and its asset ID, what needs to be done, how often it repeats, the next due date and who is responsible. A place to record that the work was done completes it.
Where do preventive maintenance intervals come from?
From the manufacturer's manual for each machine and from your site's own requirements. This site does not suggest intervals, because they depend on the equipment and how it is used.