If your engine is leaking oil, you will need to find a temporary stopgap solution until you can identify the problem and have it repaired. For example, you can use an oil leak prevention additive in the oil filler, just like you would with regular engine oil. The additive will quickly repair the valve seals by causing them to expand, thus extending their life quickly.

You can also add high-mileage oil with a seal conditioner that slows or stops oil leaks. This type of oil keeps the seals pliable and helps prevent corrosion.

After making a short-term repair, it is critical to begin repair or replacement immediately. Prolonged valve failure can affect the entire engine and hydraulic system, leaving you with costly repairs or replacements in the future. 

Failed parts can also affect the safety and well-being of workers. Your machine may begin to run dangerously with violent power or faster/slower than usual motion.

After taking the proper precautions, replace the leaking seal by following these steps.

1. Remove the seal cover.
2. Get rid of any buildup.
3. Place the sealant on both sides unless it is rubber.
4. Place the new seal.
5. Re-cap the cover.
6. Tighten the bolts.
 

Changing stem seals quickly is as important as choosing a manufacturer who understands the vitality of well-designed stem seals. If your machine is unique to your industry or operation, look for a custom solution that will meet your specific requirements.