Shop Talk Blog

The Official Blog for Texas Final Drive

Dr McCaslin

Recent Posts

Catastrophic Failure: Why Gear Oil Maintenance is So Important

What does catastrophic failure caused by a lack of maintenance look like? Let’s look at an example: a totaled planetary on a John Deere 332 final drive.

Here are some other Shop Talk Blog posts that might be helpful:

Differences Between Reman and Used Final Drive Motors

by Dr McCaslin | Jan 11, 2024 |

Reman Final Drives, Used Final Drive


It always seems like final drives decide to fail at the worst possible moment, and when that happens, you usually have to make some quick decisions about a replacement. One of those options available to you would be reman (remanufactured) final drive motors, but used final drives are another. Which one is the best?

Discover the key differences between remanufactured and used final drive motors and why reman is a better option.

Here are some other Shop Talk Blog posts you might find interesting:

20 Industry Best Practices for Hydraulic Cleanliness

by Dr McCaslin | Jan 07, 2024 |

Contamination, Hydraulic Contamination, ISO 4406


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.

Here are a few other Shop Talk Blog posts you might find helpful:

Santa's Compact Equipment Fleet

by Dr McCaslin | Dec 20, 2023 | |

It’s that time of year when Santa Claus is at his busiest -- along with his elves. And he owns a fleet of compact equipment critical to things running smoothly during the holidays. Let’s sneak a peek at what happens in the North Pole with Santa’s fleet and the elves responsible for it.

Tips for Extending the Lifespan of Your Compact Track Loader's Final Drive

by Dr McCaslin | Dec 08, 2023 |

Compact Track Loader, Maintenance, CTL



Your CTL (Compact Track Loader) depends on the final drive motors to keep it running. When a final drive fails, costs include repair/replacement and expensive downtime. Extending the useful life of your final drives reduces downtime and repair costs, meaning a better profit margin and more productivity.


In this Shop Talk blog post, we’ll look at tips for extending the life of CTL final drives, focusing on maintenance and inspection, operating practices, and track tension and alignment.

Here are a few other Shop Talk blog posts you might find useful:

How to Achieve ISO 4406 Hydraulic Cleanliness Goals

by Dr McCaslin | Dec 01, 2023 |

Hydraulic Contamination, ISO 4406



In the previous Shop Talk Blog post Understanding ISO 4406: The Basics we went over why cleanliness codes are important to you then talked about what the ISO 4406 digit codes represent. This time we're looking at how to use ISO 4406 to set and achieve cleanliness goals for your hydraulic systems.

Understanding ISO 4406: The Basics

by Dr McCaslin | Nov 21, 2023 |

Contamination, hydraulic fluid, ISO 4406


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.

Here are a few other Shop Talk Blog posts you might find helpful ...

In the Know: Bolt Preload

by Dr McCaslin | Sep 13, 2023 |

Bolts, Fasteners


Bolts are critical to keeping your final drive motor together and running. In this Shop Talk Blog post, we're going to look at bolt preload and how it works.


Here are a few other interesting Shop Talk Blog posts you might want to check out:

Bolt Torquing Sequence for Final Drive Motors

by Dr McCaslin | Aug 08, 2023 |

Final Drive Motor Assembly, Torque, Bolts

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When hurrying to reassemble your final drive motor, it’s tempting to torque one bolt and move on to the next adjacent bolt. But that isn’t a wise choice. In this Shop Talk Blog post, we’ll discuss why the sequence in which you tighten bolts is important and then look at what can go wrong when you don’t.



Here are a few other Shop Talk Blog posts you might enjoy:

Bolts fall under the category of mechanical fasteners whose job is to hold things together. Bolts not only hold your final drive together, but they also hold your drive motor to your machine. We know they must be extremely strong, considering the massive pressure within your final drive. However, how you install and torque them can compromise their ability to hold things together.

Dr Mac’s Notebook: Basic Metal Failure

by Dr McCaslin | Mar 26, 2023 |

Final Drive Failure


Failure in a final drive motor is always bad -- but a good understanding of basic metal failure can help understand what causes it and lead to a better understanding of metal behavior in general.

In this Shop Talk blog post, you'll learn about basic metal failure and the material properties that explain it. This includes an introduction to tensile testing, a discussion of key metal parameters, and an example of how these parameters can vary.

Here are two other blogs in this series:

Dr Mac's Notebook: Basics of Mechanical Stress

Dr Mac’s Notebook: Displacement Under a Load

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