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Leaf Spring Shackles and Bracket Repair

Leaf Spring Shackles and Bracket Repair

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Leaf Spring Shackles and Bracket Repair at 1A Auto

What are Leaf Spring Shackles and Brackets and where are they Located?

Leaf spring shackles and brackets, which are also called “hangers”, are parts of a vehicle’s suspension that attaches the leaf spring to the vehicle’s frame. To better describe what leaf spring shackles and brackets are, perhaps it’s best to start with the leaf spring itself. A leaf spring, sometimes also referred to as a semi-elliptical spring, carriage spring, or cart spring, is an arc of steel that attaches to a vehicle’s axle. Leaf springs are commonly used in trucks (new and old), as well as some big old cars, and generally only on the rear axle. In some heavy-duty trucks they may be used in the front as well. However, you won’t find leaf springs used on any modern cars as they don’t ride all that nicely, and aren’t necessary for smaller vehicles. They are also commonly used in off-road applications. Leaf springs provide the benefit of allowing the vehicle to handle carrying loads really well by absorbing the force it creates as the vehicle is driven – bending and flexing out in a shape like a horseshoe - so that the vehicle doesn’t sag.

The leaf spring bracket is where the leaf spring attaches to the vehicle’s frame. Typically, there are brackets for both the front and the rear end of each leaf spring. The front end of the spring connects directly to the bracket or “hanger.” In the rear, the leaf spring is usually attached to the bracket via a link called the leaf spring shackle. On vehicles that have been designed with a unibody frame, like most newer SUVs, the leaf spring shackle mounts directly to the frame rather than to a bracket. So, on a typical vehicle with a full frame (most trucks) and two leaf springs in the rear, there will be two leaf spring shackles and four leaf spring brackets; vehicles with a unibody frame will have two leaf spring shackles and two leaf spring brackets. If the truck also has two leaf springs in the front of the vehicle, well, you get the picture – it all depends. While the front end of the leaf spring is held close to the vehicle’s frame by the bracket, the rear end is allowed some amount of movement by the shackle. This allows the spring to flex in response to bumps in the road.

How do I Know if my Leaf Spring Shackle or Bracket Needs to be Replaced?

Leaf spring suspension is designed to be simple and sturdy, but like any other part, leaf spring shackles and brackets are susceptible to wear and tear. Shackles (literally) hang out underneath the body of the vehicle where they get exposed to the elements. Wet or humid conditions can lead to rust and corrosion. So can exposure to salt. Shackles and brackets can also get worn out by being jostled around by rough road conditions, potholes, or minor collisions. These can also lead to a broken leaf spring shackle or bracket.

A thumping or scratching sound in the rear of the vehicle can be a sign of a worn or damaged leaf spring shackle or bracket. If the shackle becomes too loose, it may bump into the frame of the vehicle, which can cause further damage to both the shackle and the frame. A saggy appearance in your vehicle’s rear end can also be a sign something is wrong with your leaf spring shackle (a saggy appearance in the driver’s rear end, on the other hand, may be a sign of a poor diet). There are a couple ways to check the health of your leaf spring shackles. You can park your vehicle on a level surface and measure the distance from the ground to the top of each wheel well. If there is a significant difference between the heights of either side, one side may have a worn shackle (or some other part of the suspension may be worn). You can also visually inspect the shackle for cracks or wear. A round wear area around the nut is fairly normal, but an oval wear area indicates larger movement and is a sign that the shackle should be replaced. 

As for the leaf spring bracket, If a bracket breaks, the body of the vehicle will fall onto the leaf spring, without the support of the suspension. This can cause further damage to the bracket and the spring as well as the body. It would be wise to periodically visually inspect the bracket for cracks or wear before any such disaster occurs.  

Can I Replace a Leaf Spring Shackle or Bracket Myself?

As mentioned earlier, leaf spring suspensions are designed to be simple. Therefore, if you have determined that you are in need of a leaf spring shackle or bracket replacement, replacing it should be within your grasp with a bit of effort. For a shackle replacement, you will need to raise the rear end onto jack stands and allow the suspension to sag, in order to take weight off the shackle. Then you’ll pull the bolts from the old shackle, where it connects to the leaf spring and where it connects to the body. Then bolt the new shackle into place. After slowly lowering the vehicle back to the ground, you’ll want to check that the bolts are tight when the vehicle’s weight is on them. 

For a leaf spring hanger replacement, you will also need to raise the rear end onto jack stands and allow the suspension to sag, in order to take weight off the leaf springs. This will allow you to disconnect the leaf springs and get at the bracket. Then remove the old bracket, mount the new one, and reattach the leaf spring. After lowering the vehicle off the jack stands, again you will want to be sure to check that everything still holds tight under weight.

Need a Leaf Spring Shackle or Bracket Replacement?

After years of exposure to the elements, the metal on the leaf spring shackle and bracket will tend to start flaking and rust away, eventually leading to failure. Rough road conditions and collisions can also damage and possibly break them. Once this happens, the vehicle will be essentially rendered inoperable. Luckily for you, if you are in need of a leaf spring shackle or bracket replacement, then you have you have come to the right place! At 1A Auto, we carry aftermarket leaf spring shackles and brackets for many makes and models, including kits.

We also make shopping for replacement leaf spring shackles and hangers for your car or truck easy - we're here to help you select the right parts for your vehicle! Call our customer service toll free at 888-844-3393 if you have any questions about our aftermarket leaf spring shackles or hangers, warranty, compatibility or to purchase, or you can buy online. So if you need to replace a broken, rusted, or rotted leaf spring shackle or hanger, order today and bring back the strength and integrity of your leaf spring!

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