Maintain a Clean Final Drive and Undercarriage 

At its most basic, keeping your final drive and your undercarriage clean is about keeping your final drive in view since leaks and other issues can hide behind layers of dirt and grease. Routinely taking time to blast off dirt and debris is the best way to unmask troubles and make sure if they do show up, you’ll spot them right away.

Cleanliness, however, isn’t just for something to practice in the field. At all times you should work to avoid the opportunities for contamination in your final drive including when adding oil or servicing your final drive. Nobody wants to discover their maintenance actually created issues, and taking care to maintain a clean work environment is one of the best ways to ensure that doesn’t happen.

Check for Leaks in Your Final Drive and Watch Levels

A leaking final drive not only leads to a loss in productivity of the final drive, it also leads to a dramatic increase in how fast internal parts will wear out. The gear oil inside of the final drive reduces friction and dissipates heat and due to the constant movement of gears inside the drive even a short span in a low oil environment can be catastrophic.

The process of checking your gear oil level can be unique to your manufacturer, but generally it will involve either using a fill line on the final drive that should be positioned horizontal to the ground and removing a plug or using two or three plugs set to certain degrees to indicate the proper fill.

In a common two plug system, the bottom plug will be the drain plug while the side plug is used for checking levels -- if the plug is removed and oil flows out the system is properly filled. In a three plug system, the third (top) plug is used for adding oil.

If you don’t know your exact technique, check your operator’s manual for how to check the final drive’s gear oil level -- that’s the sure shot for being positive you’re doing it right.

Change Your Final Drive Gear Oil On Time

You’ve probably already established a routine for how often you change the hydraulic oil on your equipment, but since most final drives in heavy construction equipment have a separate fluid housing you’ll need to make sure you’re not neglecting maintenance on this oil.

The general rule for gear oil is about once a year, but the actual frequency is determined by the operating conditions under which your machine is working, and, again, your operator’s manual should have insight about the best frequency for your machine.

When you change the oil on your final drive take a minute to examine your spent oil, too. By taking a close look for discoloration and even rubbing a little oil in your fingertips to feel for metal particles you can spot issues inside of your final drive before they develop further. If you do catch discoloration or metal, a specialist can help diagnose the problem with a sample of the oil.

Change Your Filters on Schedule

While some final drives have their own filter, any final drive connected to the machine’s hydraulic system (like in an excavator) will be affected by the quality of the machine’s hydraulic oil. Keeping your machine’s hydraulic oil clean and replaced on time will reduce the strain on your final drive and your machine overall.

Be a Thoughtful Operator

Because of the forces your final drive is working under and its location on your machine, how you operate your machine can have a great effect on the longevity of your final drive. Being thoughtful about avoiding impacts to your drive system while in reverse, minimizing times operating under maximum loads or at full output, and even being mindful of the conditions in which you’re working can all add to the life of your final drive.