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Home Under The Hood

Under the hood

Tips, News, Industry insights and more, all available Under the Hood at Parts for Trucks

Maintenance & Repair
What Causes Leaf Springs to Fail?
Root causes, the warning signs you can't afford to miss, and what to do to prevent leaf spring failure.
Maintenance & Repair
How Do I Know If My Leaf Springs Are Bad?
Are your leaf springs bad? What should you look for, why it matters, and what happens if you ignore it.
Maintenance & Repair
The Unsung Foundation of Every Heavy Load: Leaf Springs Explained
A plain-English guide to the suspension component that keeps your fleet honest, and your drivers safe.
Maintenance & Repair
Write-off? Think Again: Frame Straightening at Parts for Trucks
If you’ve ever watched a heavy-duty truck back in the ditch or wrestled with weird tire wear or alignment issues after a load shift, you might be dealing with a twisted frame.
Maintenance & Repair
Common Brake Problems in Heavy-Duty Trucks: What Drivers and Technicians Need to Know
Brakes are one of the most critical yet frequently neglected safety systems on heavy-duty trucks. From soft pedals to pulling and odors, this article outlines the most common brake problems, their root causes, and how technicians and drivers can keep their equipment safe and compliant.
Maintenance & Repair
Brake Systems in Heavy Duty Trucking
Brake systems are critical to commercial truck safety. With rising out-of-service rates, investing in quality components and proper maintenance reduces downtime, extends part life, and cuts costs—highlighting the importance of shifting focus from upfront price to long-term operational value.
Maintenance & Repair
Driveshaft Operating Angles
Understanding how to check and adjust driveline angles is key to preventing these problems and ensuring your vehicle operates safely and efficiently.
Maintenance & Repair
What is the proper way to check and adjust cam brakes?
Proper brake adjustment is vital for vehicle safety in the heavy-duty industry. Regularly check and adjust slack adjusters to maintain optimal performance and uphold safety standards on the road.
Maintenance & Repair
Belts Don't Last Forever
Discover the differences between tractor and trailer ABS setups and gain insights into sensor and valve placement considerations.
Maintenance & Repair
How Diesel Emission After-Treatment Works
A video covering how diesel emission aftertreatment works. Below the video there is a transcript.
Maintenance & Repair
Common Mistakes When Putting Away Fisher Equipment
A video covering the common mistakes people make when putting their Fisher equipment away for the summer. Below the video there is a short description and a transcript.
Maintenance & Repair
How to Burnish Your Trailer Brakes
A blog article exploring how, why and when to burnish you trailer brakes.
Maintenance & Repair
Cracking the Code: Avoiding Drum Damage Due to Pilot Error
A blog post about avoiding drum damage due to pilot error.
Maintenance & Repair
The Hidden Dangers of Mixing Wheel Bearing Components
A video post discussing the hidden dangers of mixing wheel bearing components. Below the video is the transcript, and a short article on the video topic.
Maintenance & Repair
Keeping It Clean: Filters
A blog article about the different filters at work in your truck. The article gives a run down and description of each type.
Maintenance & Repair
Hub-Piloted Wheel End - From Good to GREAT
This page hosts a video that explains how to take your Hub-piloted wheel end from good to great. Below the video there is a transcript.
Maintenance & Repair
What's the Right Wire for the Job?
A blog post on the factors to consider when replacing wiring on your truck.
Maintenance & Repair
Wheel End Assembly Explained
This page hosts a video that explains wheel end assembly. Below the video there is a transcript.
Maintenance & Repair
Top 7 Light Trailer Maintenance Areas
A blog post on the topic of trailer mainteance. Specifically, on the 7 areas of mainteance needed to keep it serviceable.
Maintenance & Repair
Inspecting Your Hub-Piloted Wheel End
This page hosts a video with on what you should be looking for when you are changing a wheel out? Below the video there is a transcript.
Maintenance & Repair
How to Properly Maintain Your Battery
A blog article about how to properly maintain the battery of your truck.
Maintenance & Repair
Wheel End Components Explained
This page hosts a video on the topic of wheel end components in the industry. Below the video is a transcript of the video.
Maintenance & Repair
A Clean DPF in Only 3 Hours
This page hosts a video on how Parts for Trucks cleans your DPF in only 3-hours. Below the video is a transcript of the video.