Why Do Trucks Use Leaf Springs? Detailed Explanation.


Leaf springs are one of the most critical components of truck suspension systems.
Leaf springs help the suspension of the truck by providing support. Leaf springs make rides more comfortable, especially on rugged terrain, by absorbing vibrations from potholes and road bumps.
Leaf springs are commonly used in heavy goods vehicles (HGVs) and light commercial vehicles (LCVs). While many other vehicles use spring-absorber suspension systems, leaf style springs are increasingly common and well-liked as an alternative.

Why Do Trucks Use Leaf Springs?
Leaf springs have been used in vehicles for centuries and have continued to improve, particularly for trucks. If you’ve heard of suspension systems, the first thing that comes to mind is the leaf spring.

Unlike spring absorbers, using a leaf spring in a truck is economical and more cost-effective. LCVs and HGVs typically require spring replacement due to the size of the load they usually carry.

It Is important to maintain and replace your leaf springs. There will come a time when you will need to replace the leaf spring. Vehicles with spring absorbers that wear out will require replacement, which is much more expensive than using leaf springs. Smaller vehicles with absorbers are much easier and less expensive to replace, unlike absorbers in a truck which are very expensive when you want to replace them. Installing a leaf spring on a truck with springs is a much less expensive option.

What Do Leaf Springs Do On A Truck?
The curvature of the leaf spring allows it to absorb vibrations from any road impact. It is used to locate the vehicle’s rear axles and height control because it is mounted on the axle. The leaf spring suspension system helps to keep the truck’s wheels properly aligned on the road.

The advantages are numerous, and leaf spring has been used in the truck manufacturing industry for many years.

With technological advancements and improvements in efficiency through better designs and materials for the trucks’ higher sustainability, the demand for the part has increased over time, making it a crucial component of any truck.

Aside from trucks and most commercial cars, vans and SUVs have also used leaf springs to expand the capabilities of their vehicles.

How To Maintain a Truck Leaf Spring?
Leaf springs are a truck’s lifeline, and they tend to wear out when pushed to their limits.

Your main concern with leaf springs should be whether they are too old, even though they can last for several years.

Leaf springs, like everything else, have a lifespan. Elements such as corrosion and extra strain can lengthen the truck’s maintenance timeline.

Keeping the leaf springs clean is also an excellent way to prevent future problems that may emerge.

How To Know When it’s Time To Repair Or Replace A Truck’s Leaf Springs?
Dirt accumulation causes leaf springs to become sticky. The dirt can get trapped between the leaf fragments, making the ride even bumpier.

You should pay attention to such signs. They may be rare, but if your truck is constantly operating on dirt and muddy roads, you will notice them.

Most vehicles come with a maintenance manual, which includes the attachment points for the leaf springs, which need to be checked and lubricated more frequently to extend their functionality.

Another sign that your leaf spring needs to be replaced or repaired is if your truck is lower than normal.

If the truck’s body is sitting lower on its wheels, it could be due to the slight bending of the leaf springs over time.

The solution is simple: change the old leaf springs and install new ones.

The presence of cracks and fractures is another indication that leaf springs need to be replaced.

These issues may alter the way your truck operates, particularly the movement.

If your vehicle leans more to one side when not loaded, it could mean your leaf spring is faulty. Other indications include:

  1. The truck leaning back, rolling, and nose-diving on different terrains.
  2. Steering difficulties and truck side pull while driving.

Can I Still Drive My Truck With A Broken Leaf Spring?
Due to overloading and wear, leaf springs become weak and break or separate. If this happens, or if there is another problem, take your truck to the nearest repair shop to have it examined. You may only be able to drive for a brief period on short distances to your home or the repair shop,
If you notice this issue, drive as slowly as possible because the steering system will also be affected.

It is better to drive slow so you can easily control the truck, keep the tires’ grip on the road, and avoid accidents and damage to other parts of your vehicle.

Leaf springs are an essential component of the suspension systems of bulky goods vehicles and light commercial vehicles.
They are more popular and will likely remain for decades unless a better suspension system emerges. Remember to perform preventative maintenance on your leaf springs and avoid using aftermarket parts during repairs.