Shop Talk Blog

Most owners and operators don’t realize how important case drain flow is when evaluating and diagnosing a final drive motor. This test can tell you a great deal about what’s going on inside your final drive without having to open it up.

In this blog post, we take a look at case drain flow testing, including how to perform the test and how to interpret the results.

Internal Leakage

Internal leakage is designed to support lubrication and cooling of dynamic components (e.g., bearings, pistons, etc.). Now, this leakage never leaves the system. It will always be returned to the hydraulic reservoir, often via a low-pressure drain line. Internal leakage does not contribute to the work being done by the final drive motor, though.

There is a baseline case for the hydraulic motor drain flow on your machine. However, as wear increases internal clearances and internal seals wear out, the case drain flow increases. This directly reduces the final drive's volumetric efficiency.

Overheating is one of the earliest warning signs that something inside your final drive is going wrong. Before you hear grinding or experience a total failure, a steady rise in temperature often signals problems that you can catch early if you know what to look for.

In this Shop Talk Blog post, we’ll talk about what is considered too hot, then discuss the five key reasons why final drives overheat. We’ll wrap up with a quick review of what kind of damage overheating can cause and simple checks to address it.

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

• Why Is My Skid Steer Acting Up?
• What Causes a Final Drive to Wear Out Prematurely
• Buying a Replacement Final Drive Motor
  

You probably maintain your tracks, filters, and attachments, but did you know that hydraulic fluid quietly destroys pumps and final drives when it’s neglected? Bad hydraulic fluid won’t fail overnight. Its effects are slow, causing excessive heat, accelerated wear, and power loss, until your equipment comes to a complete stop.

In this Shop Talk Blog post, we're looking at what it costs you to keep running your compact equipment on bad hydraulic fluid ... and the price is more than you budgeted for!

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

• The Case Drain Filter: A Small Component That Prevents Big Trouble
• Why Rental Companies Trust Texas Final Drive
• 5 Warning Signs Your Final Drive Might Be Failing (And What to Do Next)

Just got your new or reman final drive motor and are having a little trouble identifying the ports? This Shop Talk Blog post is for you.

In this blog post, we’ll go over the four different categories of ports you can find on a final drive, what their purpose is, and how to identify them. For larger tonnage motors, we’ve also included a short video we made.

Here are some additional Texas Final Drive blog posts you might find helpful:

• Valve Blocks on Final Drive Hydraulic Motors
• The Ultimate Glossary of Terms About Hydraulic Motors
• What to Know Before You Order a Final Drive
  
  

You’re wrapping up a long day when you notice something small, like sluggish travel speed, uneven tracks, or a dark spot under your machine. It’s easy to ignore, right? And doesn’t seem to be a big deal. It can wait a few days. But far too often, a few days turn into weeks and months, and minor issues turn into significant problems fast. And keep this in mind: Every minute of downtime, every drop of leaking fluid, and every bit of neglect quietly eats into your bottom line.

In this Shop Talk Blog post, we’re going to look at five ways your mini excavator might be draining your wallet and what you can do about it.

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

• Entrained Air: Basic Facts You Need to Know
• Advanced Reman and Repair Techniques for Final Drives
• The 8 Most Common Issues with Hydraulic Cylinders on Compact Equipment

Ignoring Track Tension

If you don’t keep the tracks on your compact excavator at the proper tension, there’s going to be some problems. If you keep them too tight, you’re going to see excessive wear on critical components like the sprockets and rollers -- and your final drive motors. On the other hand, if the tracks aren’t kept tight enough, the tracks are more likely to slip and risk derailing in the middle of a job. 

Have you ever had a skid steer or excavator break down in the middle of a big job?

Hydraulic reliability isn’t just about uptime. It’s actually about keeping your equipment operational to avoid lost income, missed deadlines, and protecting the investment you've made in your equipment. 

In this Shop Talk Blog, we’re going to discuss how reliability is built, not something to take for granted. It starts with good habits, regular checks, and a strong maintenance culture.

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

• The Facts about Large Skid Steer Loaders
• Do You Know These Facts About Timbco and TimberPro?
• Hydraulic Pump Failure

The Cost of Unreliable Hydraulics

A single hydraulic failure can have ripple effects on your compact equipment, including costly downtime, missed deadlines, and expensive repairs. And contamination and improper maintenance are among the top causes of failure for hydraulic equipment. Investing in the reliability of your equipment, on the other hand, pays for itself in fewer breakdowns, longer component life, and the ability to maintain the equipment's value. Let’s take a look at what your investment in reliability looks like.

It starts with noticing a small oil spot under your skid steer. You think, “I can deal with that later,” and before you know it, a week has turned into a month, and then, mid-job, your final drive motor seizes. Even the biggest leaks start small and always lead to expensive repairs or replacements.

Final drive leaks, whether it's your gear oil or hydraulic fluid, affect more than just fluid levels. If they aren’t addressed, they will lead to wasted money, lost productivity, and even totaled drive motors. 

In this Shop Talk Blog post, let’s break down why ignoring a final drive leak drains your wallet as well.

Here's a few Shop Talk Blog posts you might be interested in:

• Drive Sprockets and Track Drives
• Bobcat Mini Excavator Final Drive Motor Removal
• Why Is My Skid Steer Acting Up?

A Spooky Troubleshooting Guide for When Your Equipment Acts Possessed

Your skid steer can act downright haunted some times, with things like strange noises, phantom movements, and mysterious leaks -- and sometimes, death. The good news is that it isn’t ghosts, but rather an all too real issue with mechanical or hydraulic causes. So here’s a Shop Talk Blog post where we provide practical troubleshooting tips, empowering you to take control of the situation.

The Phantom Creep: When Your Skid Steer Moves on Its Own

Have you ever had your final drive inch forward or backward with no input? No worries: your skid steer isn’t possessed by a spirit. The most likely causes are …

• A sticking control valve
• Contaminated hydraulic fluid
• A faulty joystick

How do you deal with this “spirit”? That’s pretty straightforward: clean or replace the hydraulic filters and bleed the hydraulic lines, and if that doesn’t work, then inspect the control wiring.

When it comes to final drive motors, gear oil is the quiet workhorse that makes everything else possible. It cushions the gears, keeps heat under control, and prevents metal-on-metal destruction. But here’s the catch: when gear oil is neglected or handled the wrong way, it can turn into the very thing that shortens the life of your machine.

Running a rental business means keeping your machines in good shape and ready to go. When a skid steer or mini excavator breaks down, it's not just inconvenient. It costs you money, frustrates your customers, and can hurt your reputation. At that moment, you may be asking yourself: should we repair the final drive motor ourselves or call in a professional?

Here are a few additional blog posts that you might find of interest:

• The Case Drain Filter: A Small Component That Prevents Big Trouble
  
• World's Biggest Hydraulic Shovel?
• Quick Look: Kobelco SK150LC-3

Why Many Owners Choose Self-Repair

For many rental companies, the first thought is to handle repairs in-house. You may already have mechanics on staff. Tutorials and repair videos are easy to find online. Doing the work yourself feels like a quick way to save money and get a machine back to work.

There are some jobs your team absolutely can and should do. Changing gear oil, checking seals, cleaning case drain filters, and watching for leaks all fall into that category. These routine tasks prevent bigger problems later. For small fixes like that, handling repairs in-house makes sense.