Shop Talk Blog

The Official Blog for Texas Final Drive

Contaminated Gear Oil: The Hidden Threat to Your Final Drive Motor

by Dr McCaslin | Aug 31, 2025 |

Gear oil, Contamination

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One of the most frustrating things about equipment failures is how often they sneak up on you. Your machine might sound fine, run fine, and get the job done—until one day, the final drive gives out without much warning. A common culprit? Gear oil that’s quietly been working against you instead of for you. Gear oil is supposed to lubricate, protect, and keep things cool inside the drive. But once it’s contaminated, it stops doing its job, and the damage starts piling up long before you notice anything’s wrong.

In this Shop Talk Blog post, we talk about gear oil contamination, signs to look for, prevention and maintenance tips, and what to do when the damage is done.


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20 Industry Best Practices for Hydraulic Cleanliness

by Dr McCaslin | Jan 07, 2024 |

Contamination, Hydraulic Contamination, ISO 4406

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Maintaining optimal hydraulic cleanliness is essential for maximizing system efficiency, minimizing wear and tear, and extending component life. Here are 20 industry best practices to keep your hydraulic systems running smoothly.


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Understanding ISO 4406: The Basics

by Dr McCaslin | Nov 21, 2023 |

Contamination, hydraulic fluid, ISO 4406

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Your compact equipment and final drives depend on the smooth flow of hydraulic fluid to transmit power and control motion. However, the presence of contaminants in the hydraulic fluid can adversely affect not just system performance but its longevity as well. And that is where ISO 4406 comes into play.

In this Shop Talk Blog post, you’ll learn why cleanliness codes should be important to you, followed by what the ISO 4406 digit codes represent.


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Particle Contamination in Hydraulic Fluid: How Bad Can It Be?

Particles are tiny solids, and when they get into your hydraulic fluid, they will definitely cause problems! In this blog post, we’ll look at the types of particles that can contaminate hydraulic oil, their effect on your equipment, and the measures you can take to keep them out.


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Case Drain Filter: Good or Bad?

by Jim Strong | Oct 09, 2022 |

Filters, Case Drain Filters, Contamination, Case Drain

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Why don't we see case drain filters on all compact hydraulic equipment? There are pros and cons to including them in the hydraulic design. If your machine requires one, then it is critical that you replace it regularly.

 

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Wear and Your Final Drive Motor

by Dr McCaslin | Apr 02, 2021 |

Contamination, Lubrication, Wear

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Wear can have a big impact on the life and performance of your final drive motor, but there are certain ways to minimize that impact.


Here are a few other Shop Talk Blog posts you might be interested in:

Commonly Asked Questions About Hydraulic Fluid Analysis

Quite a few things can happen to the hydraulic fluid that powers your compact equipment, including contamination and aging. Even if you don’t have a fleet of equipment you’re responsible for, you still need to know the basics about hydraulic fluid analysis. To that end, here are answers to five commonly asked questions about hydraulic fluid analysis.


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Why You Should be Concerned about Hydraulic Contamination

How serious is hydraulic contamination? Can it really damage your machine? Can you risk ignoring it?


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Results of Hydraulic Contamination

Hydraulic contamination is a serious problem for final drive motors, and even more so for newer models that have tighter clearances. In this Shop Talk Blog post, we are going to discuss some of the results of hydraulic contamination and how to prevent them. It's easier than you may think!

 


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5 Final Drive Maintenance Tips

We make money off final drives that no longer work, but we hate to see an otherwise good final drive fail because it wasn’t maintained properly. Here are five final drive maintenance tips to help you keep your final drive maintained and performing well.


Here are a few more posts you might find of interest ...

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