What is the difference between corrective and preventive maintenance?

Corrective maintenance is done after problem while preventive is before problem.

Corrective maintenance is done randomly while preventive is done frequently.

Preventive maintenance will minize the need of corrective, while corrective will maximize the preventive actions.

Corrective maintenance is to repair unscheduled breakdown of an equipment while preventive maintenance is to perform scheduled maintenance of an equipment. When an equipment breaks down due to fatigue or misusage, you do corrective mantenance. When an equipment is repaired because it is scheduled to be repaired from PM1 to PM5, relacing parts before they will totally failed due to fatigue, also meaning must replace parts before other parts are affected due to their failure to operate.

Preventive maintenance is done before anything goes wrong, to prevent it. Like oiling hinges, to keep them from getting rusty. Corrective maintenance is done after it goes wrong... like replacing rusty hinges.

Basically, these issues typically do not affect the health or viability of a facility and its employees. You may get more detail at https://www.roadtoreliability.com/types-of-maintenance

          Preventive maintenance          Breakdown maintenance

Approach- Proactive- Reactive

Definition -Actions performed on time or machine-run-based schedule that will extend its useful life - Breakdown maintenance is basically the ‘run it till it breaks’ maintenance

Maintenance Cost incurred- Cost incurred is less- Cost incurred will be more

Downtime of the machine- Downtime is less- Downtime is more

Reliability- Reliability is good- Reliability is bad

Production cost- Production cost is less as the machine is reliable- Production cost is more as machine can fail at any time

Timely production of goods- Ensured- Not ensured

Loss of customers- No- Yes

Capacity of the manufacturer- Dependable- Not dependable

Morale of the operation & maintenance personnel- Morale remains high- Morale remains less

Requirement of staff- Less- More

Use of staff- Efficient- Not efficient

Component life cycle- Increased- Decreased

Energy saving- Yes- No

Safety of the personnel- Ensured- Not ensured at catastrophic failure can occur

Corrective is after finding a defect or breakdown

And to eliminate or avoid occuring of this defect or breakdown we use previntive

So corrective is after and preventive is before

in a simple way

corrective maintenance : fix it when it breaks

that means that u only repair the part of the machine when it have failure

but preventive maintenance : fix it before it breaks

that mean that u go in maintenance using a time line and hour meters and analysis to know when the part will fail and you repair it before it fail

Corrective Maintenance  - to identify & rectify the fault

Preventive Maintenance - to maintain the equipment in good operating condition

Corrective maintenance is done after Problem?Main while the preventive is protect before PROBLEM!!!

This one of my LATEST asnwer!!!

Preventive maintanence.

A procedure of maintaining running record which keeps the maintenence staff informed.of hours loged.

Based on that hourly schedules of maintanence are commissioned.

Example.

200 hours oil change.

500 hours General adjustments. Engine Valves, timings ,

1000 hours , Cylinder head De carbonisation

2000 hours FIP service and calibration

3000 hours . Mains to be replaced.

etc etc.

As each fluid has life cycle. Each part or component has a life cycle.

For important machines Like Airport Generators / Ground handling equipment where time has great importance. Parts are changed on schedule , before there life comes to limit , so are fluids and other things are changed. This keeps the machine in new condition and is known as preventive maintanence.

Corrective maintanence is Maintaining on breakdowns